A soil cyanide determination device and determination method thereof

Abstract

The invention belongs to the technical field of soil cyanide determination, and specifically relates to a soil cyanide determination device and a determination method thereof; the device comprises: a spectrophotometer, wherein an end cover is arranged on the spectrophotometer; a plurality of cuvette slots are arranged on the spectrophotometer and below the end cover, wherein a cuvette can be placed in each of the cuvette slots; the soil cyanide determination device further comprises: a rinsing and drying unit; the invention provides a rinsing and drying unit on the spectrophotometer, wherein the rinsing and drying unit can automatically rinse the inside of each cuvette with a tested agent, and then inject the tested agent again after rinsing, and then dry the smooth surface of each cuvette, and finally automatically load each cuvette into the cuvette slot, and unload the cuvette in the cuvette slot after detection, thereby improving the degree of automation and saving time and labor.

Description

Technical Field

[0001] The invention belongs to the technical field of soil cyanide determination, in particular to a soil cyanide determination device and a soil cyanide determination method. Background Art

[0002] The determination of soil cyanide is usually carried out by spectrophotometry, that is, by using a spectrophotometer;

[0003] When using a spectrophotometer, it is usually necessary to rinse the inside of the cuvette with the solution to be tested to improve the accuracy of the test. In addition, the outside of the cuvette is easily stained with the solution to be tested after rinsing. According to the operating specifications, the smooth surface of the outside of the cuvette must be dry, otherwise it needs to be cleaned with absorbent paper. The above process usually requires manual operation, which is time-consuming and laborious, and is easy to contaminate the skin. At the same time, when loading and unloading the cuvette slot, manual loading is also required, and the degree of automation is low.

[0004] In view of this, the present invention solves the above technical problems by proposing a soil cyanide determination device and a soil cyanide determination method. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art and improve the degree of automation in the use of a spectrophotometer, the present invention provides a soil cyanide determination device and a determination method thereof.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a soil cyanide determination device, comprising: a spectrophotometer, the spectrophotometer is provided with an end cover; a plurality of cuvette slots are provided on the spectrophotometer and below the end cover, each of the cuvette slots can hold a cuvette; the soil cyanide determination device also comprises: a rinsing and drying unit, the spectrophotometer is provided with a rinsing and drying unit, the rinsing and drying unit can automatically rinse the inside of each cuvette with a tested agent, inject the tested agent again after rinsing, then wipe the smooth surface of each cuvette, and finally automatically load each cuvette into the cuvette slot, and unload the cuvette in the cuvette slot after detection, thereby improving the degree of automation and saving time and labor.

[0007] Preferably, the rinse and dry unit comprises: a support frame, a support frame is fixedly installed on the side of the spectrophotometer, a moving rod is arranged on the top of the support frame, and both sides of the moving rod are threadedly connected to the top of the support frame; a clamping frame, two ends of the moving rod are fixedly connected to a connecting rod facing the spectrophotometer, the connecting rod points to the spectrophotometer, the other end of each connecting rod is fixedly connected to a right-angle plate, the top of each right-angle plate is fixedly connected to a No. 1 telescopic rod, the bottom of each No. 1 telescopic rod is fixedly connected to a rotating block, and the two rotating blocks are rotatably connected to the clamping frame together, and a motor is arranged inside one of the rotating blocks, and its output shaft is fixedly connected to the clamping frame; a plurality of holes are opened on the clamping frame, and the number and position of the holes correspond to the cuvette slot on the spectrophotometer; a No. 1 electromagnet is fixedly arranged at both ends of each hole in the clamping frame, and each No. 1 electromagnet in the same hole A No. 1 spring is fixedly connected to one side of the magnets that are close to each other, and the other end of each of the No. 1 springs is fixedly connected to a clamping block; when the No. 1 electromagnet is energized, the No. 1 electromagnet repels the clamping block; a liquid storage tank, a liquid storage tank is fixedly connected to the top of the support frame, and the liquid storage tank is arranged away from the spectrophotometer, and a plurality of sub-cavities are arranged on the liquid storage tank, and the number of the sub-cavities corresponds to the number of holes on the clamping frame, and a liquid dispensing tube is fixedly connected to the bottom of each sub-cavity, and each of the liquid dispensing tubes corresponds to the position of the holes on the clamping frame, and an electromagnetic valve is installed inside each of the liquid dispensing tubes; a waste liquid frame, a waste liquid frame is arranged at the bottom of the support frame and below the liquid storage tank; wiping blocks, the wiping blocks are arranged in pairs, and each hole on the clamping frame corresponds to a pair of wiping blocks, and the bottom of each of the wiping blocks is fixedly connected to a No. 2 telescopic rod, and the bottom of each of the No. 2 telescopic rods is fixedly connected to the bottom of the support frame, and a water absorbing block is arranged on the side of each pair of wiping blocks that are close to each other;

[0008] First, place the cuvette into the hole of the clamping frame, and then start the No. 1 electromagnet. The No. 1 electromagnet repels the clamping block, so the cuvette in the hole is clamped to fix the cuvette. The contact part between the clamping block and the cuvette can be made of rubber material. Be careful not to clamp the smooth surface of the cuvette. Then, fill the solution to be tested into the liquid storage tank. Different sub-cavities can be filled with different solutions to be tested. Then, open the solenoid valve of the dispensing tube, fill an appropriate amount of the solution to be tested into each cuvette and then close it. Then, start the motor in the rotating block to tilt the clamping frame, drive the cuvette to tilt, pour out the solution to be tested, pour it into the waste liquid frame, complete the rinsing, repeat once or several times, then reset the clamping frame, and the dispensing tube continues to load the solution to be tested into the cuvette. Then, open the end cover on the spectrophotometer, and the moving rod moves. When each cuvette When the movement reaches the corresponding wiping block, the No. 2 telescopic rod is extended and retracted, driving the water-absorbing block to wipe the smooth surface of the contrast colorimeter. The side of the water-absorbing blocks close to each other can be set as a water-absorbing sponge, water-absorbing paper, water-washing cotton cloth, etc.; then the movement rod continues to move, and when the clamping frame matches each colorimeter with the colorimeter slot, the movement rod stops moving, and the No. 1 telescopic rod is extended, driving the colorimeter to be inserted into the colorimeter slot, and then the clamping frame is released; the end cover is closed and the test is carried out. After the test is completed, the clamping frame can clamp the colorimeter in the same way. The above process completes the loading and unloading of the colorimeter; the connecting rod is pointed to the spectrophotometer and the top of the No. 1 telescopic rod is higher than the spectrophotometer, so that the entire device does not affect the opening and closing of the end cover; the movement rod can be driven to move by a motor; and the liquid storage tank can be filled with clean water to automatically clean the colorimeter.

[0009] Preferably, each of the water-absorbing blocks is slidably connected to the inside of the wiping block, and an airbag No. 1 is fixedly connected between the water-absorbing block and the wiping block. The No. 2 telescopic rod consists of a sub-rod and a mother rod, and the sub-rod is slidably connected to the inside of the mother rod. A No. 2 electromagnet is fixedly connected to the bottom of the mother rod, and a No. 2 spring is fixedly connected between the No. 2 electromagnet and the sub-rod, and the No. 2 electromagnet can attract the sub-rod, and an annular airbag is fixedly connected to the part of the sub-rod near the bottom, and a No. 1 channel is provided inside the sub-rod, and the annular airbag is connected to the inside of the No. 1 airbag through the No. 1 channel, and an annular block is fixedly connected to the top of the annular airbag, and the annular block is slidably connected to the sub-rod and the mother rod; a push rod is fixedly connected to the bottom of the annular block, and the push rod passes through the annular airbag and the bottom of the sub-rod and is exposed at the bottom of the sub-rod.

[0010] Preferably, the annular block and the push rod are both made of lightweight plastic, and there is friction damping between the push rod and the sub-rod;

[0011] When wiping the colorimetric dish, there is an operating specification, which is to wipe from top to bottom in one direction. Therefore, when the No. 1 airbag is not inflated, the absorbent block does not contact the smooth surface of the colorimetric dish, and the No. 2 electromagnet can attract the sub-rod. The No. 2 electromagnet is turned on and off to complete the extension and retraction of the No. 2 telescopic rod. When it is necessary to wipe the colorimetric dish, the No. 2 electromagnet is powered off, and the No. 2 spring is reset and extended. When the sub-rod moves up to the maximum limit, the wiping block clamps the smooth surface of the colorimetric dish in the middle. At this time, the annular airbag is squeezed and the No. 1 airbag is inflated. The annular block is expanded, and the water-absorbing block is squeezed out and contacts the smooth surface of the cuvette. Then, the No. 2 electromagnet is energized, and the No. 2 telescopic rod is contracted, and the cuvette is wiped from top to bottom. When the No. 2 telescopic rod is shortened to the minimum, the push rod contacts the No. 2 electromagnet, the annular block moves up, the annular airbag is expanded again, the No. 1 airbag is contracted, and the water-absorbing block retracts. The annular block and the push rod are both made of lightweight plastic, and there is friction damping between the push rod and the sub-rod, so that the annular block and the push rod will not fall due to gravity when they are not in contact.

[0012] Preferably, the dispensing tube is detachable;

[0013] The dispensing tube can be disassembled for easy cleaning.

[0014] Preferably, the waste liquid frame is a split design and is slidably connected to the support frame;

[0015] The waste liquid frame is a split design and is slidably connected to the support frame, so that the position of the waste liquid frame is easy to adjust and the waste liquid is easy to pour out from the waste liquid frame.

[0016] A method for determining soil cyanide, which adopts the soil cyanide determination device described above, is characterized in that it comprises the following steps:

[0017] S1: Accurately weigh a certain amount of soil sample into a conical flask, add appropriate amount of water and buffer solution, and extract under oscillation at a certain temperature for a period of time; after filtering the extract, take an appropriate amount of filtrate and add chloramine T solution. After reacting for a period of time, add isonicotinic acid-pyrazolone solution and color for a certain period of time to prepare the test solution;

[0018] S2: First, place the cuvette into the hole of the clamping frame, start the No. 1 electromagnet to fix the cuvette, then fill the solution to be tested into the liquid storage tank, fill an appropriate amount of the solution to be tested into each cuvette and close it, then start the motor in the rotating block to tilt the clamping frame, pour out the solution to be tested, pour it into the waste liquid frame, complete the rinsing, then reset the clamping frame, and continue to load the solution to be tested into the cuvette with the dispensing tube, then open the end cover on the spectrophotometer, and move the moving rod. When each cuvette moves to the corresponding wiping block, the No. 2 telescopic rod is extended and retracted, driving the water absorption block to complete the wiping of the smooth surface of the cuvette; then the moving rod continues to move, and when the clamping frame matches each cuvette with the cuvette slot, the moving rod stops moving, and the No. 1 telescopic rod is extended, driving the cuvette to be inserted into the cuvette slot, and then the clamping frame is released;

[0019] S3: Close the end cover and conduct the test. After the test, calculate the cyanide content in the soil according to the standard curve.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention discloses a soil cyanide determination device and a determination method thereof. A rinsing and drying unit is provided on a spectrophotometer. The rinsing and drying unit can automatically rinse the inside of each cuvette with a test agent, inject the test agent again after rinsing, then wipe the smooth surface of each cuvette dry, and finally automatically load each cuvette into a cuvette slot. After detection, the cuvette in the cuvette slot is unloaded, thereby improving the degree of automation and saving time and effort.

[0022] 2. A soil cyanide determination device and determination method described in the present invention comprises the following steps: firstly placing a cuvette into a hole of a clamping frame, starting a No. 1 electromagnet to fix the cuvette, then loading a solution to be tested into a liquid storage tank, and closing the tank after loading an appropriate amount of the solution to be tested into each cuvette, then starting a motor in a rotating block to tilt the clamping frame, pouring out the solution to be tested into a waste liquid frame to complete rinsing, then resetting the clamping frame, and continuously loading the solution to be tested into the cuvette with a dispensing tube, then opening the end cover on the spectrophotometer, and moving the moving rod to move, and when each cuvette moves to the corresponding wiping block, the No. 2 telescopic rod is extended and retracted to drive the water absorbing block to complete wiping of the smooth surface of the cuvette; then the moving rod continues to move, and when the clamping frame makes each cuvette correspond to the cuvette slot, the moving rod stops moving, and the No. 1 telescopic rod is extended to drive the cuvette to be inserted into the cuvette slot, and then the clamping frame is released to complete the loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 The present invention is a three-dimensional Figure 1 ;

[0025] Figure 2 The present invention is a three-dimensional Figure 2 ;

[0026] Figure 3 is a three-dimensional diagram of the rinse-dry unit of the present invention;

[0027] Figure 4 It is a stereoscopic diagram of the rinse and dry unit of the present invention without the liquid storage pool;

[0028] Figure 5 is a partial stereogram of the rinse-dry unit of the present invention;

[0029] Figure 6 is a top cross-sectional view of the clamping frame of the present invention;

[0030] Figure 7 It is a cross-sectional view of the wiping block, the second telescopic rod, and the water absorbing block of the present invention;

[0031] Figure 8 yes Figure 7 A local enlarged view of point A;

[0032] In the figure: 1. spectrophotometer; 11. end cover; 2. rinse and dry unit; 21. support frame; 22. moving rod; 23. clamping frame; 24. connecting rod; 25. right-angle plate; 26. telescopic rod No. 1; 27. rotating block; 28. electromagnet No. 1; 29. ​​spring No. 1; 3. clamping block; 31. liquid storage tank; 32. chamber; 33. liquid dispensing tube; 34. waste liquid frame; 35. wiping block; 36. telescopic rod No. 2; 37. water absorption block; 4. air bag No. 1; 41. sub-rod; 42. mother rod; 43. electromagnet No. 2; 44. spring No. 2; 45. annular air bag; 46. channel No. 1; 47. annular block; 48. push rod. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figure 1 , Figure 2 As shown;

[0035] The soil cyanide determination device of the present invention comprises: a spectrophotometer 1, on which an end cover 11 is provided; a plurality of cuvette slots are provided on the spectrophotometer 1 and below the end cover 11, and a cuvette can be placed in each cuvette slot; the soil cyanide determination device also comprises: a rinsing and drying unit 2, on which the spectrophotometer 1 is provided, and the rinsing and drying unit 2 can automatically rinse the inside of each cuvette with a tested agent, inject the tested agent again after rinsing, then wipe the smooth surface of each cuvette dry, and finally automatically load each cuvette into the cuvette slot, and unload the cuvette in the cuvette slot after detection;

[0036] During operation, when using the spectrophotometer 1, it is usually necessary to rinse the inside of the cuvette with the tested solution to improve the accuracy of the detection. In addition, after rinsing, the outside of the cuvette is easily dipped with the tested solution. According to the operating specifications, the smooth surface of the outside of the cuvette must be dry, otherwise it is necessary to use absorbent paper to clean it; the above process usually requires manual operation, which is troublesome and laborious, and is also easy to contaminate the skin. At the same time, when loading and unloading to the cuvette tank, manual loading is also required, and the degree of automation is low; therefore, a rinsing and drying unit 2 is provided on the spectrophotometer 1, and the rinsing and drying unit 2 can automatically rinse the inside of each cuvette with the tested agent, inject the tested agent again after rinsing, and then wipe the smooth surface of each cuvette, and finally automatically load each cuvette into the cuvette tank, and unload the cuvette in the cuvette tank after detection; the degree of automation is improved, saving time and effort.

[0037] As a specific embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the rinse and dry unit 2 includes: a support frame 21, the support frame 21 is fixedly installed on the side of the spectrophotometer 1, a moving rod 22 is arranged on the top of the support frame 21, and both sides of the moving rod 22 are threadedly connected to the top of the support frame 21; a clamping frame 23, both ends of the moving rod 22 are fixedly connected with connecting rods 24 on the side facing the spectrophotometer 1, the connecting rod 24 points to the spectrophotometer 1, the other end of each connecting rod 24 is fixedly connected to a right angle plate 25, and the top of each right angle plate 25 is fixedly connected to a No. 1 telescopic rod 26, each No. 1 telescopic rod 26 is fixedly connected to a rotating block 27 at the bottom, and the two rotating blocks 27 are rotatably connected to the clamping frame 23 together, and a motor is arranged inside one of the rotating blocks 27, and its output shaft is fixedly connected to the clamping frame 23; a plurality of holes are opened on the clamping frame 23, and the number and position of the holes correspond to the cuvette slot on the spectrophotometer 1; No. 1 electromagnets 28 are fixedly arranged at both ends of each hole in the clamping frame 23, and each No. 1 electromagnet 28 in the same hole is close to each other. One side of each spring 29 is fixedly connected to a No. 1 spring, and the other end of each No. 1 spring 29 is fixedly connected to a clamping block 3; when the No. 1 electromagnet 28 is energized, the No. 1 electromagnet 28 repels the clamping block 3; a liquid storage tank 31 is fixedly connected to the top of the support frame 21, and the liquid storage tank 31 is set away from the spectrophotometer 1. A plurality of sub-cavities 32 are arranged on the liquid storage tank 31, and the number of sub-cavities 32 corresponds to the number of holes on the clamping frame 23. A liquid dispensing tube 33 is fixedly connected to the bottom of each sub-cavity 32, and each liquid dispensing tube 33 is connected to the clamping frame 2 3, and each dispensing tube 33 is installed with a solenoid valve inside; a waste liquid frame 34, a waste liquid frame 34 is provided at the bottom of the support frame 21 and below the liquid storage tank 31; wiping blocks 35, the wiping blocks 35 are arranged in pairs, each hole on the clamping frame 23 corresponds to a pair of wiping blocks 35, the bottom of each wiping block 35 is fixedly connected to a No. 2 telescopic rod 36, the bottom of each No. 2 telescopic rod 36 is fixedly connected to the bottom of the support frame 21, and a water absorbing block 37 is provided on the side close to each other of each pair of wiping blocks 35;

[0038] During operation, first place the cuvette into the hole of the clamping frame 23, then start the No. 1 electromagnet 28, the No. 1 electromagnet 28 repels the clamping block 3, and thus clamps the cuvette in the hole to complete the fixation of the cuvette. The contact portion between the clamping block 3 and the cuvette can be made of rubber material, and be careful not to clamp the smooth surface of the cuvette; then the solution to be tested is loaded into the liquid storage tank 31, and different sub-cavities 32 can be loaded with different solutions to be tested, then the solenoid valve of the liquid dispensing tube 33 is opened, and an appropriate amount of the solution to be tested is loaded into each cuvette and then closed, then the motor in the rotating block 27 is started to tilt the clamping frame 23, driving the cuvette to tilt, pouring out the solution to be tested, and pouring it into the waste liquid frame 34 to complete rinsing, repeating once or several times, then the clamping frame 23 is reset, the liquid dispensing tube 33 continues to load the solution to be tested into the cuvette, then the end cover 11 on the spectrophotometer 1 is opened, and the motion rod 22 moves. When each cuvette moves When the wiping block 35 is moved to correspond, the second telescopic rod 36 is extended and retracted, driving the water-absorbing block 37 to complete the wiping of the smooth surface of the contrast colorimetric dish. The side of the water-absorbing block 37 close to each other can be set as a water-absorbing sponge, water-absorbing paper, water-washing cotton cloth, etc.; then the moving rod 22 continues to move, and when the clamping frame 23 makes each cuvette correspond to the cuvette slot, the moving rod 22 stops moving, and the first telescopic rod 26 is extended, driving the cuvette to be inserted into the cuvette slot, and then the clamping frame 23 is released; the end cover 11 is closed and the test is carried out. After the test is completed, the clamping frame 23 can clamp the cuvette in the same way. The above process completes the loading and unloading of the cuvette; the connecting rod 24 is pointed to the spectrophotometer 1, and the top of the first telescopic rod 26 is higher than the spectrophotometer 1, so that the entire device does not affect the opening and closing of the end cover 11; the moving rod 22 can be driven by a motor to move; and the liquid storage tank 31 can be filled with clean water to automatically clean the contrast colorimetric dish.

[0039] As a specific embodiment of the present invention, Figure 7 , Figure 8 As shown, each water-absorbing block 37 is slidably connected to the inside of the wiping block 35, and a No. 1 airbag 4 is fixedly connected between the water-absorbing block 37 and the wiping block 35. The No. 2 telescopic rod 36 is composed of a sub-rod 41 and a mother rod 42. The sub-rod 41 is slidably connected to the inside of the mother rod 42. A No. 2 electromagnet 43 is fixedly connected to the bottom of the mother rod 42, and a No. 2 spring 44 is fixedly connected between the No. 2 electromagnet 43 and the sub-rod 41. The No. 2 electromagnet 43 can attract the sub-rod 41. An annular airbag 45 is fixedly connected to the part of the sub-rod 41 near the bottom. A No. 1 channel 46 is arranged inside the sub-rod 41. The annular airbag 45 is connected to the inside of the No. 1 airbag 4 through the No. 1 channel 46. The top of the annular airbag 45 is fixedly connected to an annular block 47, and the annular block 47 is slidably connected to the sub-rod 41 and the mother rod 42; the bottom of the annular block 47 is fixedly connected to a push rod 48, and the push rod 48 passes through the annular airbag 45 and the bottom of the sub-rod 41 and is exposed at the bottom of the sub-rod 41;

[0040] The annular block 47 and the push rod 48 are both made of lightweight plastic, and there is friction damping between the push rod 48 and the sub-rod 41;

[0041] When working, when wiping the colorimetric dish, there is an operating specification, that is, it needs to be wiped from top to bottom in one direction. Therefore, when the No. 1 airbag 4 is not inflated, the water absorbent block 37 does not contact the smooth surface of the colorimetric dish, and the No. 2 electromagnet 43 can attract the sub-rod 41. The No. 2 electromagnet 43 is turned on and off to complete the extension and retraction of the No. 2 telescopic rod 36. When it is necessary to wipe the colorimetric dish, the No. 2 electromagnet 43 is powered off, and the No. 2 spring 44 is reset and extended. When the sub-rod 41 moves up to the maximum limit, the wiping block 35 clamps the smooth surface of the colorimetric dish in the middle. At this time, the annular airbag 45 is squeezed, and the No. 1 airbag 4 is inflated. , squeeze out the absorbent block 37 and contact it with the smooth surface of the cuvette, then energize the No. 2 electromagnet 43, contract the No. 2 telescopic rod 36, and wipe the cuvette from top to bottom. When the No. 2 telescopic rod 36 is shortened to the minimum, the push rod 48 contacts the No. 2 electromagnet 43, the annular block 47 moves up, the annular airbag 45 is expanded again, the No. 1 airbag 4 contracts, and the absorbent block 37 retracts; the annular block 47 and the push rod 48 are both made of lightweight plastic, and there is friction damping between the push rod 48 and the sub-rod 41, so that the annular block 47 and the push rod 48 will not fall due to gravity when they are not in contact.

[0042] As a specific embodiment of the present invention, the liquid dispensing tube 33 can be disassembled;

[0043] During operation, the liquid dispensing tube 33 can be disassembled and easily cleaned.

[0044] As a specific embodiment of the present invention, Figure 1 As shown, the waste liquid frame 34 is a split design and is slidably connected to the support frame 21;

[0045] During operation, the waste liquid frame 34 is a split design and is slidably connected to the support frame 21 , so that the position of the waste liquid frame 34 can be easily adjusted, and waste liquid can be easily poured out of the waste liquid frame 34 .

[0046] A method for determining soil cyanide, which is adopted in the soil cyanide determination device mentioned above, is characterized in that it comprises the following steps:

[0047] S1: Accurately weigh a certain amount of soil sample into a conical flask, add appropriate amount of water and buffer solution, and extract under oscillation at a certain temperature for a period of time; after filtering the extract, take an appropriate amount of filtrate and add chloramine T solution. After reacting for a period of time, add isonicotinic acid-pyrazolone solution and color for a certain period of time to prepare the test solution;

[0048] S2: First, place the cuvette into the hole of the clamping frame 23, start the No. 1 electromagnet 28 to fix the cuvette, then load the solution to be tested into the liquid storage tank 31, and close the liquid storage tank after loading an appropriate amount of the solution to be tested into each cuvette, then start the motor in the rotating block 27 to tilt the clamping frame 23, pour out the solution to be tested, pour it into the waste liquid frame 34, and complete the rinsing, then reset the clamping frame 23, and the liquid dispensing tube 33 continues to load the solution to be tested into the cuvette, then open the end cover 11 on the spectrophotometer 1, and the moving rod 22 moves. When each cuvette moves to the corresponding wiping block 35, the No. 2 telescopic rod 36 is extended and retracted to drive the water absorption block 37 to complete the wiping of the smooth surface of the cuvette; then the moving rod 22 continues to move, and when the clamping frame 23 makes each cuvette correspond to the cuvette slot, the moving rod 22 stops moving, and the No. 1 telescopic rod 26 is extended to drive the cuvette to be inserted into the cuvette slot, and then the clamping frame 23 is released;

[0049] S3: Close the end cover 11 and perform the test. After the test, calculate the cyanide content in the soil according to the standard curve.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the specific implementation modes of the present invention can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A soil cyanide determination device, comprising: A spectrophotometer (1), wherein the spectrophotometer (1) is provided with an end cover (11); a plurality of cuvette slots are provided on the spectrophotometer (1) and below the end cover (11), and a cuvette can be placed in each of the cuvette slots; It is characterized in that: the soil cyanide determination device also includes: A rinsing and drying unit (2), wherein the spectrophotometer (1) is provided with the rinsing and drying unit (2), and the rinsing and drying unit (2) can automatically rinse the inside of each cuvette with the tested agent, inject the tested agent again after rinsing, then wipe the smooth surface of each cuvette dry, and finally automatically load each cuvette into the cuvette slot, and then unload the cuvette in the cuvette slot after detection; The rinse and dry unit (2) comprises: A support frame (21), the side of the spectrophotometer (1) is fixedly mounted with the support frame (21), the top of the support frame (21) is provided with a moving rod (22), and both sides of the moving rod (22) are threadedly connected to the top of the support frame (21); The clamping frame (23) comprises a connecting rod (24) fixedly connected to both ends of the moving rod (22) on the side facing the spectrophotometer (1), the connecting rod (24) points to the spectrophotometer (1), the other end of each connecting rod (24) is fixedly connected to a right angle plate (25), the top of each right angle plate (25) is fixedly connected to a first telescopic rod (26), the bottom of each first telescopic rod (26) is fixedly connected to a rotating block (27), the two rotating blocks (27) are rotatably connected to the clamping frame (23) together, one of the rotating blocks (27) is provided with a motor inside, and the rotating blocks (27) are connected to the clamping frame (23) in a rotating manner. The output shaft is fixedly connected to the clamping frame (23); the clamping frame (23) is provided with a plurality of holes, the number and position of the holes corresponding to the cuvette slot on the spectrophotometer (1); a No. 1 electromagnet (28) is fixedly arranged at both ends of each hole in the clamping frame (23); a No. 1 spring (29) is fixedly connected to a side of each No. 1 electromagnet (28) in the same hole that is close to each other, and the other end of each No. 1 spring (29) is fixedly connected to a clamping block (3); when the No. 1 electromagnet (28) is energized, the No. 1 electromagnet (28) repels the clamping block (3); A liquid storage tank (31), the top of the support frame (21) is fixedly connected with the liquid storage tank (31), the liquid storage tank (31) is arranged away from the spectrophotometer (1), a plurality of sub-cavities (32) are arranged on the liquid storage tank (31), the number of the sub-cavities (32) corresponds to the number of holes on the clamping frame (23), a liquid dispensing tube (33) is fixedly connected to the bottom of each sub-cavity (32), each liquid dispensing tube (33) corresponds to the position of a hole on the clamping frame (23), and a solenoid valve is installed inside each liquid dispensing tube (33); A waste liquid frame (34), a waste liquid frame (34) is provided at the bottom of the support frame (21) and below the liquid storage tank (31); Wiping blocks (35), the wiping blocks (35) are arranged in pairs, each hole on the clamping frame (23) corresponds to a pair of wiping blocks (35), the bottom of each wiping block (35) is fixedly connected to a second telescopic rod (36), the bottom of each second telescopic rod (36) is fixedly connected to the bottom of the supporting frame (21), and a water absorbing block (37) is arranged on one side of each pair of wiping blocks (35) close to each other; Each of the water absorbing blocks (37) is slidably connected to the inside of the wiping block (35), and a first airbag (4) is fixedly connected between the water absorbing block (37) and the wiping block (35). The second telescopic rod (36) is composed of a sub-rod (41) and a mother rod (42). The sub-rod (41) is slidably connected to the inside of the mother rod (42). A second electromagnet (43) is fixedly connected to the bottom of the mother rod (42). A second spring (44) is fixedly connected between the second electromagnet (43) and the sub-rod (41). The second electromagnet (43) can attract the sub-rod (41). The sub-rod ( An annular airbag (45) is fixedly connected to a portion near the bottom of the sub-rod (41); a first channel (46) is arranged inside the sub-rod (41); the annular airbag (45) is communicated with the inside of the first airbag (4) through the first channel (46); an annular block (47) is fixedly connected to the top of the annular airbag (45); the annular block (47) is slidably connected to the sub-rod (41) and the mother rod (42); a supporting rod (48) is fixedly connected to the bottom of the annular block (47); the supporting rod (48) passes through the annular airbag (45) and the bottom of the sub-rod (41) and is exposed at the bottom of the sub-rod (41).

2. The soil cyanide measuring device according to claim 1, characterized in that: The annular block (47) and the push rod (48) are both made of lightweight plastic, and there is friction damping between the push rod (48) and the sub-rod (41).

3. The soil cyanide measuring device according to claim 2, characterized in that: The liquid dispensing tube (33) is detachable.

4. The soil cyanide determination device according to claim 3, characterized in that: The waste liquid frame (34) is of split design and is slidably connected to the support frame (21).

5. A method for determining soil cyanide, the method adopting the soil cyanide determination device as claimed in claim 4, characterized in that: The following steps are involved: S1: Accurately weigh a certain amount of soil sample into a conical flask, add appropriate amount of water and buffer solution, and extract under oscillation at a certain temperature for a period of time; after filtering the extract, take an appropriate amount of filtrate and add chloramine T solution. After reacting for a period of time, add isonicotinic acid-pyrazolone solution and color for a certain period of time to prepare the test solution; S2: First, place the cuvette into the hole of the clamping frame (23), start the No. 1 electromagnet (28), complete the fixation of the cuvette, then fill the solution to be tested into the liquid storage tank (31), fill an appropriate amount of the solution to be tested into each cuvette and close it, then start the motor in the rotating block (27), tilt the clamping frame (23), pour out the solution to be tested, pour it into the waste liquid frame (34), complete the rinsing, then reset the clamping frame (23), and continue to fill the solution to be tested into the cuvette with the dispensing tube (33), then open the The end cover (11) on the spectrophotometer (1) is opened, and the moving rod (22) moves. When each cuvette moves to correspond to the wiping block (35), the second telescopic rod (36) is extended and retracted, driving the water absorption block (37) to complete wiping the smooth surface of the cuvette; then the moving rod (22) continues to move, and when the clamping frame (23) makes each cuvette correspond to the cuvette slot, the moving rod (22) stops moving, and the first telescopic rod (26) is extended, driving the cuvette to be inserted into the cuvette slot, and then the clamping frame (23) is released; S3: closing the end cover (11) and performing the test. After the test, the cyanide content in the soil is calculated according to the standard curve.

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