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A kit for detecting barium ions and its detection method

A technology of barium ions and kits, which is applied in the direction of material analysis by observing the influence on chemical indicators, and analysis by making materials undergo chemical reactions, which can solve the problems of substandard detection sensitivity, long detection time, expensive instruments, etc. problem, to achieve an effect conducive to promotion and popularization

Active Publication Date: 2021-07-27
安徽倪众医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are relatively mature and commonly used methods for detecting barium ions at home and abroad, such as spectrometry, titration, and electrochemical methods. Insufficient professional operation and technical personnel

Method used

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  • A kit for detecting barium ions and its detection method
  • A kit for detecting barium ions and its detection method
  • A kit for detecting barium ions and its detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 A kind of test kit for detecting barium ions

[0028] Contains a glass test tube with a sealing film, a barium ion standard color card, a detection solution, and a pretreatment solution;

[0029] The detection solution is the silver triangle sheet nano-sol detection solution modified by sodium rhodamine, which is prepared according to the following steps:

[0030] (1) Add a sodium citrate solution with a concentration of 10.0-50.0mmol / L to the polyvinylpyrrolidone solution with a concentration of 0.1-1.0mmol / L, then add silver nitrate solution with a concentration of 10.0-50.0mmol / L and hydrogen peroxide solution at the same time, and mix Stir for 0.5-1.0h;

[0031] (2) Step (1) After the reaction is completed, add a sodium borohydride solution with a concentration of 0.05-0.2mol / L, stir the mixed solution rapidly, store it in the dark at room temperature for 1-3h, and wait for use;

[0032] (3) Disperse the solution obtained in step (2) in a sodium rhodi...

Embodiment 2

[0039] Embodiment 2 The method for the detection barium ion of a kind of kit

[0040] (1) Sample pretreatment:

[0041] Put the sample containing barium ions into the sample bottle after collection, and keep it sealed; measure 3-5ml of water sample, put it into a glass test tube with a sealing film, add 0.5-2.0ml of pretreatment solution into the glass test tube, After mixing evenly, place the glass test tube in a water bath and heat it for 0.5-2 hours, during which the test tube is shaken 2-3 times; the glass test tube is cooled to room temperature, and all forms of barium in the water sample are transformed into Ba 2+ , collecting the supernatant to obtain the pretreated sample;

[0042] (2) Colorimetric detection of the content of barium ions in the sample:

[0043] Measure 1-2ml of the pre-treated sample, add the detection solution in the kit, and mix evenly. After 1-10 minutes of color reaction, compare it with the barium ion standard color card to obtain the barium ion...

Embodiment 3

[0044] Embodiment 3 barium ions add the impact of different amounts on color development

[0045] Take the concentration as 1.0×10 -5mol / L barium chloride standard solution 0.00mL, 0.05mL, 0.10mL, 0.20mL, 0.50mL, 1.00mL were put into six 10mL glass test tubes respectively, and deionized water 1.00mL, 0.95mL, 0.90mL were added respectively. mL, 0.80mL, 0.50mL, 0.00mL. At the same time, add the pretreatment solution in the kit to the above solution respectively (the specific pretreatment process is the same as in Example 2), and then add 2.00mL detection solution to each glass test tube at the same time, and the color reaction is 5min, and the barium ion is observed. Effect of different concentrations on color reaction. Along with the continuous increase of barium ion concentration, the detection solution color of kit among the present invention changes gradually, thus shows that the shape of silver triangle sheet changes gradually along with the continuous increase of barium ...

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Abstract

The invention relates to a test kit for detecting barium ions and a detection method thereof. The test kit includes a glass test tube with a sealing film, a barium ion standard color card, a detection solution, and a pretreatment solution; the detection method is as follows: The sample is firstly pretreated with the pretreatment solution, and then mixed evenly with the silver triangle sol detection solution modified by sodium rosebate, because sodium rosebate coordinates with barium ions in an alkaline environment to induce the silver triangle Aggregation causes the color of the detection solution to change, and the color is compared with the barium ion detection standard color card in the kit to obtain the content of barium ions in the sample to be tested. The kit of the invention has the advantages of simple sample processing, short detection time, high detection specificity, low detection limit, convenient on-site real-time detection and the like.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry testing, and in particular relates to a method for detecting barium ions in a sample using a coordination aggregation colorimetric method and a kit thereof. Background technique [0002] Barium is not an essential element for the human body, but it has a great impact on human health. Barium may be exposed to barium during the mining, smelting, manufacturing, and use of barium compounds. Barium and its compounds can enter the body through the respiratory tract, digestive tract and damaged skin. Occupational barium poisoning is mainly caused by inhalation of the respiratory tract, which is seen in accidents during production and use; non-occupational barium poisoning is mainly caused by ingestion of the digestive tract, mostly caused by accidental ingestion; liquid soluble barium compounds can be absorbed through wounded skin. Acute poisoning of barium is mostly caused by mistaken ing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 王敏汪竹青吴根华
Owner 安徽倪众医疗器械有限公司
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