Method for detecting benzene substances and ether substances in painting at same time

Abstract

The invention relates to a method for detecting benzene substances and ether substances in the painting at the same time. The method comprises the following steps: weighing 0.02g of internal standard substance, 0.02g of benzene, 0.02g of methylbenzene, 0.02g of dimethyl benzene, 0.02g of ethylbenzene and 0.02g of alcohol substances, mixing the materials in a sample preparing bottle, diluting with 2mL dilution solvent, sealing, and shaking up the sample preparing bottle; weighing about 2g of sample, putting 0.02g of internal standard substance into the sample preparing bottle, diluting with 2ml dilution solvent, sealing, and shaking up the sample preparing bottle; detecting by adopting gas chromatography provided with a hydrogen flame ionic detector, thus obtaining a gas chromatography hydrogen flame ionization detector map, and calculating the content of benzene substances and ether substances in the sample by taking peak area ratio of the benzene substance standards and the ether substance standards to internal standard substance as a correction factor. Compared with the method for respectively detecting benzene substances and ether substances, the method for detecting the benzene substances and the ether substances has the advantages that detection time is shortened, cost for manpower and material resource is saved, recovery rate is high and relative standard deviation is small and detection efficiency is greatly improved.

Description

Technical field [0001] The invention is the field of coating detection, especially involving a gas chromatography-hydrogen flame ion detector method that detects the phenylbin substances and ether substances in the coating. Background technique [0002] With the continuous development of the building materials industry, the number of construction coatings in my country has continued to increase. As of the end of 2012, my country's architectural coating industry has continued to maintain high -speed growth, with a large output, and the percentage of the total output of the coating industry has also increased.Considering the living environment of the people and from the perspective of protecting human health, the State Administration of Quality Supervision, Inspection and Quarantine has promulgated a series of national standards, which legally clarify the limited value of harmful substances in different species of coating products.Mainly include heavy metals, free formaldehyde, vol...

AI Technical Summary

Problems solved by technology

However, paint is a bulk commodity for import and export, and it is also a commodity under key supervision. The quantity of import and export is relatively large, and a large number of tests need to be completed in a short period of time.

However, in the current standard, the two series of substances are tested separately, and there is a lot of waste in testing time, equipment usage, and labor costs.

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