Determination of Five Types of Dodecachlorinated Flame Retardants in Polymer of E-waste Recyclables by Gas Chromatography Mass Spectrometry
An analytical method was developed for the determination of five types of dodecachlorinated flame retardants in the polymer of e-waste recyclables.The target flame retardants included Mirex,Dechlorane 602,Dechlorane 603,syn-Dechlorane Plus and anti-Dechlorane Plus.After investigation of the effect of five types of solutions on the extraction,ultrasonic extraction with N-Methyl pyrrolidone(NMP)as the extracting solution could effectively dissolve the samples containing the target flame retardants of acrylonitrile butadiene styrene(ABS),polypropylene(PP),and silicone rubber.The extraction rate of the target flame retardants was between 88.6％-95.3％.Polyethylene terephthalate(PET)sample was processed by microwave extraction.The optimal test conditions were obtained by designing orthogonal tests,and the extraction rate of target flame retardants was between 79.7％-87.0％.The extraction solution was purified by silica solid-phase extraction column,which could reduce the interference of impurities on mass spectrometry.The calibration curves were linear within the ranges of 0.15-50 mg·L-1 for the target flame retardants and the correlation coefficients were over 0.996.The measurement was repeatedly conducted for 7 times for each of the 4 samples containing the target flame retardants,and the coefficient of variation for the 5 target flame retardants was within the range of 3.1％-7.4％.Three concentration levels of standard solution were added to the blank sample,and the recovery was in the range of 81.7％-112.2％.This method was sensitive and efficient,and was suitable for the determination of 5 types of dodecachlorinated flame retardants in the polymer of e-waste recyclables.
E-waste recyclablesPolymerDodecachlorinated flame retardantsGas chromatography mass spectrometry
霍炜江、余建龙、邵秋荣、陈宜浩、彭志铿
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广州海关技术中心,广东广州 510623
佛山海关综合技术中心,广东佛山 528303
电子废品回收件 高聚物 十二氯代阻燃剂 气相色谱-质谱法
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