A kind of color test paper for rapid detection of cyanide and its preparation and detection method

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 ...

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.

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