The first innovative method for the detection of volatile organic SVHC in textiles The Jiangsu Changzhou Inspection and Quarantine Bureau pioneered the new method for the detection of volatile organic SVHC in textiles. It saves the cost of testing, avoids the environmental pollution caused by the chemical substances used in the testing process, and will play an important role in promoting the development of foreign trade. Among the 55 REACH textile recall cases that have been announced by the European Union, China's textiles account for 54.55%, which is due to the product detection rate of less than 50% in the domestic textile market. Even worse, statistics show. In 2011, the bilateral trade volume between China and Europe reached US $ 567.21 billion. According to industry consensus, the implementation of the REACH regulation will increase the additional cost of Chinese exports to Europe by 5-6%. It is necessary for the quality inspection department to always pay attention to the development of REACH regulations in order to provide timely technical and consulting services to enterprises. Based on the actual shortage, at present, for the determination of phthalate content in textiles, there are mainly national standards GB / T 20388-2006 in China, and BS EN 15777-2009 abroad. The domestic testing standards for dye intermediate 2,4-dinitrotoluene in textiles are mainly GB / T 17592-2006, BS EN 14362.1-2012, etc. Testing SVHC using the above standards requires complicated pre-processing steps for textile samples. The instrument takes a long time to test and requires high equipment and reagent consumption. To complete many testing projects, high testing costs are required. And the longer detection cycle has caused tremendous pressure on textile production enterprises. Based on the original testing methods, the scientific staff of Jiangsu Changzhou Inspection and Quarantine Bureau Comprehensive Technical Service Center improved the deficiencies and researched new ways to establish a method for rapid screening of volatile SVHC in textiles. This method is based on ion mobility spectroscopy (IMS) and adopts the direct injection of textile samples. It can quickly detect 11 volatile SVHCs within 1 to 6 minutes, and the detection limits are all below 100ppm, which fully meets EU REACH The 1000ppm quality content limit in the regulations, and the alarm threshold can be determined according to the actual needs of users, as a rapid screening technology for these highly volatile substances.
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