High temperature digestion device and method

Abstract

The present application relates to the technical field of sample digestion, and provides a high-temperature digestion device and method. The high-temperature digestion device includes a driving assembly, a centrifugal rotor, a heating assembly and a digestion tube; the driving assembly is connected to the centrifugal rotor, and the driving assembly is used to drive the centrifugal rotor to rotate; the centrifugal rotor is provided with a processing cavity matching the digestion tube; the digestion tube is installed in the processing cavity, and a sealing layer is provided in the digestion tube, and a digestion space is provided between the sealing layer and the bottom of the digestion tube, and the digestion space is used to accommodate the digestion solution and the sample to be digested; the heating assembly is used to heat the digestion solution in the digestion space. According to the high-temperature digestion device of the embodiment of the present application, a high acceleration value generated by high-speed centrifugation is realized, so that the digestion solution is subjected to a pressure higher than the atmospheric pressure, thereby increasing the boiling point of the digestion solution, so that the sample digestion process can be completed quickly, and the use of a high-pressure closed container is avoided, thereby improving the safety of sample digestion.

Description

Technical Field

[0001] The present application relates to the technical field of sample digestion, and in particular to a high-temperature digestion device and method. Background Art

[0002] At present, before analyzing and testing the samples, the samples need to be digested. Sample digestion in the related art is mainly carried out through high-pressure sealed containers. The samples and digestion solutions are placed in the high-pressure sealed containers, the air pressure in the high-pressure sealed containers is increased, and then the temperature of the digestion solution is increased to achieve the digestion of the samples. The digestion of samples in the related art has safety hazards, and the use of high-pressure sealed containers as digestion devices is prone to explosion. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a high-temperature digestion device, which realizes a high acceleration value generated by high-speed centrifugation, so that the digestion solution is subjected to a pressure higher than the atmospheric pressure, thereby increasing the boiling point of the digestion solution, allowing the sample digestion process to be completed quickly, and avoiding the use of a high-pressure closed container, thereby improving the safety of sample digestion.

[0004] The present application also proposes a high-temperature carbonization method.

[0005] The high temperature digestion device according to the first embodiment of the present application includes a driving component, a centrifugal rotor, a heating component and a digestion tube;

[0006] The driving assembly is connected to the centrifugal rotor, and the driving assembly is used to drive the centrifugal rotor to rotate;

[0007] The centrifugal rotor is provided with a processing cavity matching the digestion tube;

[0008] The digestion tube is installed in the processing chamber, a sealing layer is provided in the digestion tube, a digestion space is provided between the sealing layer and the bottom of the digestion tube, and the digestion space is used to accommodate the digestion solution and the sample to be digested;

[0009] The heating component is used to heat the digestion in the digestion space.

[0010] According to the high temperature digestion device of the embodiment of the present application, the digestion solution and the sample to be digested are placed in the digestion tube, and then the sealing layer is placed in the digestion tube, so that the digestion solution is located below the sealing layer. Then the digestion tube is symmetrically placed on the centrifugal rotor, the driving assembly drives the centrifugal rotor to rotate, the digestion tube is subjected to the centrifugal force, the pressure in the digestion space begins to rise, and the boiling point of the digestion solution increases. At the same time, the digestion solution in the digestion space is heated by the heating assembly, so that the temperature of the digestion solution rises, so that the temperature of the digestion solution can be higher than the boiling point temperature under atmospheric pressure, so that the sample to be digested is quickly digested by the high temperature digestion solution. Then the high acceleration value generated by high-speed centrifugation is realized, so that the digestion solution is subjected to a pressure higher than atmospheric pressure, thereby raising the boiling point of the digestion solution, so that the sample digestion process can be completed quickly, and the use of a high-pressure sealed container is avoided, thereby improving the safety of sample digestion.

[0011] According to one embodiment of the present application, the sealing layer is an inert liquid layer, wherein the density of the inert liquid is lower than the density of the digestion solution, and the boiling point of the inert liquid is higher than 100 degrees Celsius.

[0012] According to one embodiment of the present application, the heating component includes at least one of the following:

[0013] At least one electric heater is disposed on the centrifugal rotor, and the electric heater abuts against the lower part of the digestion tube;

[0014] At least one microwave heating module is arranged on one side of the digestion tube.

[0015] According to one embodiment of the present application, the high-temperature digestion device includes a heat dissipation component, one end of which is installed on the upper part of the digestion tube, and the heat dissipation component is connected to the sealing layer.

[0016] According to one embodiment of the present application, the heat dissipation assembly includes a heat sink, one end of the heat sink is connected to the sealing layer, and the other end of the heat sink is connected to the outside through the pipe opening of the digestion tube.

[0017] According to one embodiment of the present application, a thermal insulation layer is provided in the processing chamber, and the thermal insulation layer wraps the digestion tube.

[0018] According to an embodiment of the present application, a plurality of slots are provided on the upper portion of the thermal insulation layer, and the slots are located above the digestion space.

[0019] According to one embodiment of the present application, a heat-conducting air duct is provided on the centrifugal rotor, the air duct is connected to the upper part of the digestion tube, and the heat-conducting air duct is higher than the digestion space.

[0020] According to one embodiment of the present application, the high-temperature digestion device includes a temperature sensor, which is installed on the centrifugal rotor and is used to detect the temperature of the digestion tube.

[0021] The high temperature digestion method according to the second embodiment of the present application includes:

[0022] placing nitric acid and a sample to be digested in the digestion tube, and then adding methyl silicone oil into the digestion tube;

[0023] Install the digestion tube symmetrically on the centrifuge rotor;

[0024] Controlling the centrifugal rotor to start rotating so that the centrifugal speed reaches 2000 rpm to 20000 rpm;

[0025] The digestion solution in the digestion tube is heated.

[0026] According to the high-temperature digestion method of the embodiment of the present application, a high acceleration value is achieved through high-speed centrifugation, so that the digestion solution is subjected to a pressure higher than the atmospheric pressure, thereby increasing the boiling point of the digestion solution, allowing the sample digestion process to be completed quickly, and avoiding the use of a high-pressure closed container, thereby improving the safety of sample digestion.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is one of the structural schematic diagrams of the high temperature digestion device provided in the embodiment of the present application;

[0030] Figure 2 This is the second structural schematic diagram of the high temperature digestion device provided in the embodiment of the present application;

[0031] Figure 3 It is a schematic diagram of the high temperature digestion method provided in the embodiment of the present application;

[0032] Reference numerals:

[0033] 1. Driving assembly; 2. Centrifugal rotor; 3. Heating assembly; 4. Digestion tube; 5. Sealing layer; 6. Digestion space; 7. Conductive slip ring; 8. Heat dissipation assembly; 9. Insulation layer; 10. Temperature sensor; 31. Electric heater; 81. Heat sink; 91. Slot. DETAILED DESCRIPTION

[0034] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0035] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0037] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0039] Combine the following Figures 1 to 3 The high temperature digestion device and method of the present application are described.

[0040] According to the embodiment of the first aspect of the present application, Figure 1 and Figure 2 As shown, the high-temperature digestion device includes a driving component 1, a centrifugal rotor 2, a heating component 3 and a digestion tube 4; the driving component 1 is connected to the centrifugal rotor 2, and the driving component 1 is used to drive the centrifugal rotor 2 to rotate; a processing cavity matching the digestion tube 4 is provided on the centrifugal rotor 2; the digestion tube 4 is installed in the processing cavity, and a sealing layer 5 is provided in the digestion tube 4, and a digestion space 6 is provided between the sealing layer 5 and the bottom of the digestion tube 4, and the digestion space 6 is used to accommodate the digestion liquid and the sample to be digested; the heating component 3 is used to heat the digestion liquid in the digestion space 6.

[0041] When in use, the digestion solution and the sample to be digested are placed in the digestion tube 4, and then the sealing layer 5 is placed in the digestion tube 4, so that the digestion solution is located below the sealing layer 5. Then the digestion tube 4 is symmetrically placed on the centrifugal rotor 2, and the driving component 1 drives the centrifugal rotor 2 to rotate. The digestion tube 4 is subjected to the centrifugal force, and the pressure in the digestion space 6 begins to rise, so that the boiling point of the digestion solution increases. At the same time, the digestion solution in the digestion space 6 is heated by the heating component 3, so that the temperature of the digestion solution rises, so that the temperature of the digestion solution can be higher than the boiling point temperature under atmospheric pressure, so that the sample to be digested is quickly digested by the high-temperature digestion solution. Then the high acceleration value generated by high-speed centrifugation is realized, so that the digestion solution is subjected to a pressure higher than atmospheric pressure, thereby raising the boiling point of the digestion solution, so that the sample digestion process can be completed quickly, and the use of a high-pressure sealed container is avoided, thereby improving the safety of sample digestion.

[0042] Specifically, Figure 1 and Figure 2 As shown, the high temperature digestion device of this embodiment further includes a conductive slip ring 7, through which the heating component 3 and other components can be powered. Since power supply using the conductive slip ring 7 is a prior art, it will not be described in detail here.

[0043] In the embodiment of the present application, the centrifugal rotor 2 is, for example, an angle rotor or a horizontal rotor. However, it should be understood that the centrifugal rotor 2 may also be any other suitable type of rotor.

[0044] In the embodiment of the present application, the sealing layer 5 is an inert liquid layer, wherein the density of the inert liquid is lower than the density of the digestion solution, and the boiling point of the inert liquid is higher than 100 degrees Celsius. When in use, the digestion solution and the sample to be digested are first placed in the digestion tube 4, and then an inert liquid such as methyl silicone oil is added into the digestion tube 4. Since the density of methyl silicone oil is lower than the density of the digestion solution such as nitric acid, the methyl silicone oil will float on the digestion solution, and then the digestion solution is sealed in the digestion space 6, which can prevent the digestion solution in the lower layer from evaporating and dissipating, and can also increase the pressure of the digestion solution in the lower layer.

[0045] Specifically, the sealing layer 5 is, for example, a methyl silicone oil layer. However, it should be understood that the sealing layer 5 may also be any other suitable inert liquid with a boiling point higher than 100 degrees Celsius and a density lower than 1 g / ml.

[0046] In the embodiment of the present application, the driving component 1 is, for example, a motor. However, it should be understood that the driving component 1 may also be any other suitable driving member capable of driving the centrifugal rotor 2 to rotate.

[0047] In the embodiment of the present application, the digestion tube 4 is made of, for example, quartz, glass or fluoroplastic material, but it should be understood that the digestion tube 4 can also be made of any other suitable material with high temperature resistance and strong acid corrosion resistance.

[0048] In one embodiment of the present application, Figure 1 and Figure 2 As shown, the heating assembly 3 includes at least one electric heater 31, which is arranged on the centrifugal rotor 2 and abuts against the lower part of the digestion tube 4. When in use, the electric heater 31 is installed on the centrifugal rotor 2, and the electric heater 31 abuts against the lower part of the digestion tube 4, so that the electric heater 31 can exchange heat with the lower part of the digestion tube 4, and then the digestion liquid in the digestion space 6 can be heated by the electric heater 31.

[0049] In the embodiment of the present application, the electric heater 31 is, for example, an electric heating wire, an electric heating film or a PTC ceramic heating body. However, it should be understood that the electric heater 31 can also be any other suitable heating element.

[0050] Specifically, the electric heater 31 may be powered by the conductive slip ring 7 , and the electric heater 31 may also be provided with energy by the wireless energy transmission system.

[0051] In one embodiment of the present application, the heating assembly 3 includes at least one microwave heating module, which is disposed on one side of the digestion tube 4. When in use, the digestion space 6 in the digestion tube 4 is heated by the microwave heating module to heat the digestion solution, which is simple and convenient. However, it should be understood that the heating assembly 3 can also be composed of any other suitable heating element, such as an electromagnetic heating module.

[0052] In one embodiment of the present application, Figure 1 and Figure 2 As shown, the high temperature digestion device includes a heat dissipation component 8, one end of which is installed on the upper part of the digestion tube 4, and the heat dissipation component 8 is connected to the sealing layer 5. When in use, the digestion tube 4 is driven to rotate at a high speed by the centrifugal rotor 2, so that the digestion solution is subjected to a pressure higher than the atmospheric pressure, so that the boiling point of the digestion solution is increased. At the same time, the digestion solution at the bottom of the digestion space 6 is heated by the heating component 3, so that the temperature of the digestion solution is increased to digest the sample to be digested, and when the temperature of the digestion solution is increased, the digestion solution will transfer heat to the sealing layer 5, so that the temperature of the sealing layer 5 is increased. The heat dissipation component 8 can transfer the temperature of the sealing layer 5 to the outside or other positions, so that the temperature of the sealing layer 5 is reduced, ensuring that the temperature of the sealing layer 5 is lower than the temperature of the digestion solution, so that there is a temperature difference between the digestion solution and the sealing layer 5, so that the digestion solution will produce convection due to the temperature difference, and the digestion solution at the bottom of the digestion space 6 will flow upward, thereby accelerating the mixing and contact of the digestion solution and the sample to be digested, and accelerating the digestion speed of the sample to be digested. The temperature of the digestion solution is conducted to the sealing layer 5, and then the heat is conducted from the sealing layer 5 to the heat dissipation component 8, so that the temperature of the digestion solution will not rise infinitely. By controlling the power of the heating component 3, the heat dissipation area of ​​the heat dissipation component 8, etc., the temperature of the digestion solution can be controlled within a certain range to avoid the digestion solution temperature being too high.

[0053] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the heat dissipation component 8 includes a heat sink 81, one end of the heat sink 81 is connected to the sealing layer 5, and the other end of the heat sink 81 is connected to the outside world through the nozzle of the digestion tube 4. When in use, the heat sink 81 is in contact with the sealing layer 5, so that the heat of the sealing layer 5 can be transferred to the heat sink 81, and the heat is transferred from one end of the heat sink 81 to the other end, and then the heat is transferred to other positions or heat exchanged with the external environment, so as to achieve the cooling of the sealing layer 5, ensure that there is a certain temperature difference between the sealing layer 5 and the digestion solution, so that the digestion solution at the bottom of the digestion space 6 will flow upward, thereby accelerating the mixing and contact of the digestion solution and the sample to be digested, and accelerating the digestion speed of the sample to be digested. It should be noted that the heat dissipation component 8 can also be composed of a phase change heat absorption component containing a phase change energy material.

[0054] In one embodiment of the present application, Figure 1and Figure 2 As shown, a heat preservation layer 9 is provided in the processing chamber, and the heat preservation layer 9 wraps the digestion tube 4. When in use, by providing the heat preservation layer 9 in the processing chamber, the heat preservation layer 9 can prevent the heat of the digestion tube 4 from being transferred to the centrifugal rotor 2, thereby avoiding heat loss. The heat preservation layer 9 can also support the digestion tube 4.

[0055] In one embodiment of the present application, Figure 1 and Figure 2 As shown, the upper part of the insulation layer 9 is provided with a plurality of slots 91, and the slots 91 are located above the digestion space 6. When in use, when the centrifugal rotor 2 rotates at a high speed, a highly flowing airflow is formed in the slots 91, and the airflow can take away the heat from the upper part of the digestion tube 4, so that the temperature of the sealing layer 5 is reduced.

[0056] In one embodiment of the present application, a heat-conducting air duct is provided on the centrifugal rotor 2, the air duct is connected to the upper part of the digestion tube 4, and the heat-conducting air duct is higher than the digestion space 6. When in use, when the centrifugal rotor 2 rotates at a high speed, high-speed flowing air can be formed in the heat-conducting air duct, thereby quickly taking away the heat from the upper part of the digestion tube 4, reducing the temperature of the upper part of the digestion tube 4, thereby reducing the temperature of the sealing layer 5, thereby causing a temperature difference between the sealing layer 5 and the digestion solution. The digestion solution at the bottom of the digestion space 6 is heated due to the heating of the heating component 3, so that the digestion solution at the bottom of the digestion space 6 will flow upward, thereby accelerating the mixing and contact of the digestion solution and the sample to be digested, and accelerating the digestion speed of the sample to be digested.

[0057] In one embodiment of the present application, Figure 1 and Figure 2 As shown, the high temperature digestion device includes a temperature sensor 10, which is installed on the centrifugal rotor 2 and is used to detect the temperature of the digestion tube 4. When in use, the temperature of the digestion tube 4 can be detected in real time by the temperature sensor 10, so that the staff can know the real-time temperature of the digestion tube 4, and it is convenient to control the working power and other parameters of the heating component 3 according to the temperature of the digestion tube 4 so that the temperature of the digestion tube 4 increases or decreases, so that the temperature of the digestion tube 4 meets the requirements, and the accuracy of sample digestion is ensured.

[0058] According to an embodiment of the second aspect of the present application, Figure 3 As shown, a high temperature digestion method is provided, comprising:

[0059] 101. Place nitric acid and the sample to be digested in a digestion tube 4, and then add methyl silicone oil into the digestion tube 4;

[0060] 102. Install the digestion tube 4 symmetrically on the centrifugal rotor 2;

[0061] 103. Control the centrifugal rotor 2 to start rotating so that the centrifugal speed reaches 2000 rpm to 20000 rpm;

[0062] 104. Heat the digestion solution in the digestion tube 4.

[0063] When in use, 50% concentration nitric acid and the sample to be digested are first placed in the digestion tube 4, and then part of methyl silicone oil is added to the digestion tube 4. Since the density of methyl silicone oil is lower than that of nitric acid, and silicone oil is incompatible with nitric acid, silicone oil will float on the upper layer of nitric acid. Then the sample tube is symmetrically placed in the processing cavity of the centrifugal rotor 2, the driving component 1 drives the centrifugal rotor 2 to rotate, and the heating component 3 starts to heat the nitric acid in the digestion space 6. As the speed of the centrifugal rotor 2 is increased to between 2000rpm and 20000rpm, the specific speed can be adjusted according to actual needs. At this time, the liquid in the digestion tube 4 is gradually increased by the centrifugal force, so that the boiling point of nitric acid is gradually increased, and then the digestion solution such as nitric acid can be stably heated without boiling, and the sample to be digested can be quickly digested. The high acceleration value generated by high-speed centrifugation is realized, so that the digestion solution is subjected to a pressure higher than atmospheric pressure, thereby increasing the boiling point of the digestion solution, so that the sample digestion process can be completed quickly, and the use of a high-pressure sealed container is avoided, thereby improving the safety of sample digestion.

[0064] In the embodiment of the present application, the digestion tube 4 is installed on the centrifugal rotor 2 at an angle of 45 degrees, for example. However, it should be understood that the inclination angle of the digestion tube 4 can also be any other suitable size.

[0065] In an embodiment of the present application, heating the digestion solution in the digestion tube 4 includes:

[0066] The digestion solution is intermittently heated so that the temperature of the digestion solution is controlled at 160 degrees Celsius;

[0067] After the digestion solution temperature was maintained at 160 degrees Celsius for 10 minutes, heating was stopped;

[0068] The temperature of the digestion tube 4 is detected. When the temperature of the digestion tube 4 is lower than 100 degrees Celsius, the rotation speed of the centrifugal rotor 2 is reduced until the centrifugal rotor 2 stops rotating.

[0069] When in use, add 0.5g of rice to the digestion tube 4 and wait for the sample to be digested; then add 10ml of dilute nitric acid with a concentration of 50%; then add 10ml of methyl silicone oil to the digestion tube 4. Put the digestion tube 4 symmetrically into the processing cavity on the centrifugal rotor 2. Start the drive component 1 to drive the centrifugal rotor 2 to rotate, so that the speed of the centrifugal rotor 2 reaches 5000rpm. Then start the heating component 3. And measure the temperature in the middle of the digestion tube 4 through the temperature sensor 10. When the speed reaches 5000rpm, the pressure in the digestion tube 4 exceeds 940KPa, and the boiling point of nitric acid is above 180 degrees Celsius. At this time, the temperature of the quartz digestion tube 4 is measured by the temperature sensor 10, and the heating component 3 is intermittently heated by intermittent power supply, so that the temperature of the digestion tube 4 can be stably controlled at 160 degrees Celsius. When the temperature is maintained at 160 degrees Celsius for 10 minutes, stop heating and keep the speed to wait for the system to cool down. When the temperature sensor 10 measures the temperature below 100 degrees Celsius, the drive component 1 starts to decelerate until the centrifugal rotor 2 stops rotating. When the centrifugal rotor 2 stops steadily, the digestion tube 4 is taken out, and the temperature of the digestion tube 4 is brought to room temperature by room temperature or water bath, and then the lower layer of digestion liquid is quantitatively sucked by a pipette or other liquid taking equipment for detection and analysis.

[0070] Finally, it should be noted that the above implementation modes are only used to illustrate the present application, rather than to limit the present application. Although the present application is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent substitutions of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application, and should be included in the scope of the claims of the present application.

Claims

1. A high temperature digestion device, characterized in that: It includes a driving component, a centrifugal rotor, a heating component, a digestion tube and a heat dissipation component; The driving assembly is connected to the centrifugal rotor, and the driving assembly is used to drive the centrifugal rotor to rotate; The centrifugal rotor is provided with a processing cavity matching the digestion tube; The digestion tube is installed in the processing chamber, a sealing layer is provided in the digestion tube, a digestion space is provided between the sealing layer and the bottom of the digestion tube, and the digestion space is used to accommodate the digestion solution and the sample to be digested; The heating component is used to heat the digestion liquid in the digestion space; One end of the heat dissipation component is installed on the upper part of the digestion tube, and the heat dissipation component is connected to the sealing layer.

2. The high temperature digestion device according to claim 1, characterized in that: The sealing layer is an inert liquid layer, wherein the density of the inert liquid is lower than the density of the digestion solution, and the boiling point of the inert liquid is higher than 100 degrees Celsius.

3. The high temperature digestion device according to claim 1, characterized in that: The heating component includes at least one of the following: At least one electric heater is disposed on the centrifugal rotor, and the electric heater abuts against the lower part of the digestion tube; At least one microwave heating module is arranged on one side of the digestion tube.

4. The high temperature digestion device according to claim 1, characterized in that: The heat dissipation component comprises a heat sink, one end of which is connected to the sealing layer, and the other end of which is connected to the outside through the pipe opening of the digestion tube.

5. The high temperature digestion device according to any one of claims 1 to 4, characterized in that: A heat-insulating layer is arranged in the processing cavity, and the heat-insulating layer wraps the digestion tube.

6. The high temperature digestion device according to claim 5, characterized in that: A plurality of slots are arranged on the upper part of the heat-insulating layer, and the slots are located above the digestion space.

7. The high temperature digestion device according to any one of claims 1 to 4, characterized in that: The centrifugal rotor is provided with a heat-conducting air duct, the air duct is communicated with the upper part of the digestion tube, and the heat-conducting air duct is higher than the digestion space.

8. The high temperature digestion device according to any one of claims 1 to 4, characterized in that: The high-temperature digestion device comprises a temperature sensor, which is mounted on the centrifugal rotor and is used to detect the temperature of the digestion tube.

9. A high temperature digestion method, applied to the high temperature digestion device according to any one of claims 1 to 8, characterized in that: include: placing nitric acid and a sample to be digested in the digestion tube, and then adding methyl silicone oil into the digestion tube; Install the digestion tube symmetrically on the centrifuge rotor; Controlling the centrifugal rotor to start rotating so that the centrifugal speed reaches 2000 rpm to 20000 rpm; The digestion solution in the digestion tube is heated.

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