A kind of rapid detection method of aniline

A detection method, aniline technology, applied in color/spectral characteristic measurement, material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, etc., to achieve convenient operation, simple preparation, and eliminate panic psychology Effect

Active Publication Date: 2017-01-04
OCEAN UNIV OF CHINA
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Problems solved by technology

Elimination of such social panic depends on the timely release of relevant pollution information, and many existing aniline detection methods, such as electrochemical methods, chemical titration methods, spectroscopic methods, gas and liquid chromatography, etc., mostly rely on large-scale testing instruments and Professional testers, so it is difficult to detect aniline pollution in water or soil in real time, quickly and efficiently

Method used

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  • A kind of rapid detection method of aniline
  • A kind of rapid detection method of aniline
  • A kind of rapid detection method of aniline

Examples

Experimental program
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Effect test

Embodiment 1-6

[0020] Select multiple groups of aniline aqueous solutions with different concentrations as test samples, and test according to the following steps respectively, and the obtained aniline concentration measurement values ​​are listed in Table 1 in detail:

[0021] (1) Preparation of color standard card

[0022] The preparation concentration is 10 -7 A series of standard aniline aqueous solutions ranging from mol / L to 1mol / L, soak the spiropyranose cellulose test paper in the above solution for 3-5 minutes, and obtain different aniline concentrations according to the color of the spiropyranose cellulose test paper under different aniline concentrations. Spiropyran test paper color standard card.

[0023] (2) Detection of polluted water samples

[0024] Soak the spiropyranose cellulose test paper in the aniline-contaminated water sample to be tested for 3-5 minutes; compare the color of the spiropyranose cellulose test paper with the above color standard card to quickly visuall...

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Abstract

The invention discloses a method for detecting aniline pollutants in water bodies, and belongs to the technical field of chemical sensor detection materials. This method utilizes the color difference produced by the "selective" absorption of spiropyran UV-Vis spectrum in aniline aqueous solution to rapidly qualitatively and quantitatively detect aniline pollutants. The technical content includes: (1) Obtaining a color standard card related to the aniline concentration according to the color change of the spiropyranose test paper in the aniline water standard solution of serial concentrations. (2) According to the color of the spiropyranose test paper in the solution to be tested, compare the color standard card to quickly determine the concentration of aniline. The detection method has simple material preparation, convenient operation, and is not limited by large-scale testing equipment and professional technicians, and is especially suitable for rapid on-site detection of aniline pollutants in the environment.

Description

technical field [0001] The invention relates to a rapid detection method for aniline pollutants in water bodies. The detection method quickly qualitatively and quantitatively detects aniline based on the color difference produced by the "selective" absorption of spiropyran ultraviolet-visible spectrum in aniline aqueous solution, and belongs to the technical field of chemical sensor detection materials. Background technique [0002] Aniline is the simplest aromatic amine, and it is also an extremely important chemical intermediate in the synthesis of pharmaceuticals, dyes, and rubber. However, aniline is highly toxic and carcinogenic. Therefore, in the process of production, storage, transportation and use, once aniline leaks, it will cause serious environmental pollution, directly threaten people's living environment, and even cause serious social panic. For example, on December 31, 2012, the aniline leakage accident at Tianji Coal Chemical Company in Changzhi City, Shanxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/33G01N21/78
Inventor 田进涛田卫国公培贞
Owner OCEAN UNIV OF CHINA
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