Rendering test paper for quick detection of cyanides and preparation and detection methods thereof

The technology of cyanide and test paper is applied to the chromogenic test paper for rapid detection of cyanide and the fields of preparation and detection thereof. The effect of low detection cost and improved detection efficiency

Active Publication Date: 2018-09-14
BEIJING PRIMEBIOTEK COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, new methods for cyanide detection mainly include chromatography, cyclic voltammetry, distillation, nano-gold substrate SERS technology, spectrophotometry, etc. Although these methods have the advantages of high accuracy, they also have the need for corresponding The detection equipment has the disadvantages of complicated and cumbersome operation, long detection cycle, high detection cost, and inconvenient portability. It is not suitable for a large number of samples to be screened.
[0003] Although the current kit colorimetric method and test paper method are more convenient than the above methods, there are still many problems, such as poor sensitivity, narrow detection range, many supporting reagents, and the test paper is soaked in the sample solution during the detection process. The reaction reagent and the reaction product fall off during the middle, resulting in the staining of the sample solution and uneven color development on the surface of the test paper. It has shortened to a certain extent, but it still takes about 20 to 30 minutes. In terms of cost, the cost of each test is also about 0.7 yuan.

Method used

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  • Rendering test paper for quick detection of cyanides and preparation and detection methods thereof
  • Rendering test paper for quick detection of cyanides and preparation and detection methods thereof
  • Rendering test paper for quick detection of cyanides and preparation and detection methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1.1 Preparation of color test paper and color test paper

[0048] 1) The mass concentration of the preparation is sodium hydroxide 3g / L, isonicotinic acid 15g / L, triton X-100 3g / L, barbituric acid 3g / L, methyl vinyl ether-maleic anhydride copolymer 60g / L mixed solution is used as test paper soaking solution, and the solvent is pure water;

[0049] 2) Pour the prepared test paper soaking solution into a special enamel plate, soak the 3MM filter paper from the test paper soaking solution at a constant speed, take it out, hang it to drain, and send it to a 50°C drying oven to dry for 40-45 minutes;

[0050] 3) Cut the dried 3MM filter paper into strips with a width of 0.6cm, paste the cut 3MM filter paper on a 30×8cm test paper substrate and press it tightly, and cut into 8×0.6cm strips. Obtain the color test paper.

[0051] 1.2 Determination of the detection limit of the color test paper obtained in the above 1.1

[0052] Take a number of negative samples of liquor wi...

Embodiment 2

[0067] 2.1 Preparation of color test paper and color test paper

[0068] 1) The mass concentration of the preparation is sodium hydroxide 8g / L, isonicotinic acid 12g / L, triton X-100 1g / L, barbituric acid 10g / L, methyl vinyl ether-maleic anhydride copolymer 30g / L mixed solution is used as test paper soaking solution, and the solvent is pure water;

[0069] 2) and 3) with embodiment 1.

[0070] The determination of the detection limit, detection accuracy verification, and specificity detection results of the color test paper obtained in the above 2.1 are basically the same as those in Example 1, and will not be repeated here.

Embodiment 3

[0072] 3.1 Preparation of color test paper and color test paper

[0073] 1) The mass concentration of the preparation is sodium hydroxide 12g / L, isonicotinic acid 8g / L, triton X-100 5g / L, barbituric acid 15g / L, methyl vinyl ether-maleic anhydride copolymer 90g / L mixed solution is used as test paper soaking solution, and the solvent is pure water;

[0074] 2) and 3) with embodiment 1.

[0075] The determination of the detection limit of the color test paper obtained in the above 3.1, the detection accuracy verification, and the specificity detection results are basically the same as those in Example 1, and will not be repeated here.

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Abstract

The invention provides rendering test paper for quick detection of cyanides, comprising a cyanide detection layer. The cyanide detection layer is composed of, by weight, 3-12 parts of sodium hydroxide, 8-15 parts of isonicotinic acid, 1-5 parts of triton X-100, 3-15 parts of barbituric acid, and 30-90 parts of methyl vinyl ether-maleic anhydride copolymer. The rendering test paper herein uses no bitter acids and other flammable explosive dangerous reagents during the detection process, the reaction time is short, the operating process is simple and fast, the detection cost is low, the detection cost for single sample detection is about 0.1 Yuan, the detection sensitivity and accuracy are high, rendered color uniformity is good, and the shelf life is long.

Description

technical field [0001] The invention belongs to the technical field of biochemical detection, and in particular relates to a color-developing test paper for rapid detection of cyanide and a preparation and detection method thereof. Background technique [0002] In recent years, new methods for cyanide detection mainly include chromatography, cyclic voltammetry, distillation, nano-gold substrate SERS technology, spectrophotometry, etc. Although these methods have the advantages of high accuracy, they also have the need for corresponding The detection equipment has the disadvantages of complex and cumbersome operation, long detection cycle, high detection cost, and inconvenient portability, and is not suitable for mass screening of samples. [0003] Although the current kit colorimetric method and test paper method are more convenient than the above methods, there are still many problems, such as poor sensitivity, narrow detection range, many supporting reagents, and the test ...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78G01N2021/7759
Inventor 张晓梅邓乾民
Owner BEIJING PRIMEBIOTEK COMPANY
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