Chloroethylene detection reagent and preparation method thereof

A detection reagent, vinyl chloride technology, applied in material analysis by observing the influence of chemical indicators, and analysis by chemical reaction of materials, etc., can solve the problems of complex measurement process, long feedback time, unfavorable detection, etc. Achieve the effect of accurate measurement, high sensitivity and easy operation

Inactive Publication Date: 2015-09-30
SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the detection method of vinyl chloride is mainly gas chromatography column method, the measurement result is relatively accurate, but the determination process is relatively complicated, and the feedback time is long, which is not conducive to timely detection
DMDE is the product of the reaction between vinyl chloride and other substances. There have been researches on the spectrophotometric determination method of DMDE. This method has relatively ideal measurement results, good sensitivity and high accuracy, but it cannot be directly used as a method for the determination of vinyl chloride. Detection reagent, the reagent needs to be improved before it can be used to detect the content of vinyl chloride

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A vinyl chloride detection reagent, comprising the following components in parts by mass:

[0020] 15 parts of phosphomolybdic acid, 5 parts of methyl yellow, 2 parts of sodium sulfate, 3 parts of cresol red, 2 parts of tricresyl phosphate, 2 parts of zinc sulfur carbamate, 10 parts of dimethylacetamide and 15 parts of deionized water .

[0021] A preparation method of vinyl chloride detection reagent, the preparation steps are as follows:

[0022] (1) Mix ethanol and deionized water, add other components in turn, stir while adding, heat in a water bath at 62°C, and prepare a premix after stirring evenly;

[0023] (2) Put the premix obtained in step (1) into a venturi tube and mix until uniform to obtain a clarified mixed solution;

[0024] (3) The obtained clarified mixed solution was placed in a vacuum, and after 24 hours, it was taken out and sealed to obtain the vinyl chloride detection reagent.

[0025] The sensitivity of the reagent to the content of vinyl chlo...

Embodiment 2

[0027] A vinyl chloride detection reagent, comprising the following components in parts by mass:

[0028] 25 parts of phosphomolybdic acid, 0 parts of methyl yellow, 9 parts of sodium sulfate, 7 parts of cresol red, 5 parts of tricresyl phosphate, 6 parts of zinc sulfur carbamate, 25 parts of dimethylacetamide and 25 parts of deionized water .

[0029] A preparation method of vinyl chloride detection reagent, the preparation steps are as follows:

[0030] (1) Mix ethanol and deionized water, add other components in turn, stir while adding, heat in a water bath at 62°C, and prepare a premix after stirring evenly;

[0031] (2) Put the premix obtained in step (1) into a venturi tube and mix until uniform to obtain a clarified mixed solution;

[0032] (3) The obtained clarified mixed solution was placed in a vacuum, and after 24 hours, it was taken out and sealed to obtain the vinyl chloride detection reagent.

[0033] The sensitivity of the reagent to the content of vinyl chlo...

Embodiment 3

[0035] A vinyl chloride detection reagent, comprising the following components in parts by mass:

[0036] 23 parts of phosphomolybdic acid, 9 parts of methyl yellow, 8 parts of sodium sulfate, 6 parts of cresol red, 4 parts of tricresyl phosphate, 5 parts of zinc sulfur carbamate, 22 parts of dimethylacetamide and 22 parts of deionized water .

[0037] A preparation method of vinyl chloride detection reagent, the preparation steps are as follows:

[0038] (1) Mix ethanol and deionized water, add other components in turn, stir while adding, heat in a water bath at 62°C, and prepare a premix after stirring evenly;

[0039] (2) Put the premix obtained in step (1) into a venturi tube and mix until uniform to obtain a clarified mixed solution;

[0040] (3) The obtained clarified mixed solution was placed in a vacuum, and after 24 hours, it was taken out and sealed to obtain the vinyl chloride detection reagent.

[0041] The sensitivity of the reagent to the content of vinyl chlo...

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PUM

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Abstract

The invention discloses a chloroethylene detection reagent and a preparation method thereof, and belongs to the technical field of gas detection. The detection reagent comprises the following components in parts by weight: 15-25 parts of phosphomolybdic acid, 5-10 parts of dimethyl yellow, 2-9 parts of sodium sulfate, 3-7 parts of cresol red, 2-5 parts of tricresyl phosphate, 2-6 parts of vulcanized zinc dimethyl dithiocarbamate, 10-25 parts of dimethylacetamide and 15-25 parts of deionized water. The preparation method comprises the steps: (1) preparing a pre-mixed liquid; (2) obtaining a clear mixed liquid; and (3) standing under a vacuum condition for 12-48h, and sealing so as to obtain the chloroethylene detection reagent. The chloroethylene detection reagent provided by the invention is easy to operate, high in sensitivity and high in measurement accuracy and can be used for effectively detecting the content of chloroethylene in air.

Description

technical field [0001] The invention belongs to the technical field of gas detection, in particular to a vinyl chloride detection reagent and a preparation method thereof. Background technique [0002] Vinyl chloride, also known as vinyl chloride, is an important monomer used in polymer chemical industry, which can be prepared from ethylene or acetylene. It is a colorless, liquefied gas. Vinyl chloride is a toxic substance, and liver cancer is related to long-term inhalation and exposure to vinyl chloride. It forms an explosive mixture with air, the explosion limit is 4% to 22% (volume), and it is more likely to explode under pressure. During storage and transportation, attention must be paid to the airtightness of the container and nitrogen seal, and a small amount of polymerization inhibitor should be added. [0003] The neurological, digestive, respiratory and other systemic lesions caused by long-term exposure to vinyl chloride gas in the production environment, as wel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 金可心凌云夏戊君凌天阳
Owner SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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