Method for determining chlorobenzene compounds in plastic product

Abstract

The invention relates to a technology for detecting chlorobenzene compounds and particularly relates to a method for determining the chlorobenzene compounds in a plastic product. The method comprises the following steps: (1) sample preparation: selecting samples and crushing the samples into uniform samples with a high polymer material sample crusher; (2) extraction: adding the samples into a solvent, tightly plugging, extracting in a microwave extractor, filtering extract liquor, blowing with nitrogen and waiting for purification; (3) purification: activating a PA (polyamide) pillared with a solvent, adding the samples into the solvent for dissolution, eluting with the solvent, blowing to be dry with nitrogen and metering volume with propyl alcohol; (4) gaschromatographic mass spectrometric determination: respectively absorbing a to-be-determined standard solution and a to-be-determined sample solution, injecting a gaschromatographic mass spectrometer for determining and finally calculating the content of chlorobenzene compounds in the samples. The determination method provided by the invention has the advantages that 12 types of chlorobenzene organic compounds in plastics can be simultaneously detected, therefore, the sensitivity is relatively high, the limit of detection is low, the degree of precision is good, the detection period is short, the anti-interference capacity is strong, and the method is fast, stable and accurate.

Description

technical field [0001] The invention relates to a detection technology for chlorobenzene compounds, in particular to a method for determining chlorobenzene compounds in plastic products. Background technique [0002] In recent years, countries around the world, especially Western developed countries such as the United States, the European Union, and Japan, have greatly increased their health requirements for products, and the requirements for consumer products that are in direct contact with the human body are particularly strict. Because these chlorobenzene compounds are difficult to degrade and remove, they will cause increasingly obvious harm to the human body and the ecological environment. For example, trichlorobenzene, as a high-concern candidate substance, has received high attention from the EU REACH regulations. Chlorobenzene and other compounds are regulated by the EU Substances regulated by Regulation (EC) No 850 / 2004 (Regulation on Persistent Organic Pollutants)....

AI Technical Summary

Problems solved by technology

So far, there is no corresponding detection method standard for chlorobenzene organic compounds in plastics at home and abroad, and no corresponding detection method is provided in relevant regulations or standards, which brings difficulties to the implementation of these regulations and standards

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