Soothing reagent-the first innovative method for the detection of SVHC in textiles. 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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