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建立了微波萃取-GC/MS联用法测定橡胶及其制品中16种多环芳烃(PAHs)的方法,通过实验优化了萃取溶剂、萃取时间、萃取温度等微波萃取条件和16种PAHs的分离和测定条件。用加标回收方法试验确定方法的准确度。结果表明:16种PAHs检出限(S/N=5)为0.002~0.01 mg/L,平均回收率为63.58%~100.5%,RSD为1.9%~9.9%。该方法可以满足橡胶及其制品中多环芳烃的检测要求。
A method for the determination of 16 polycyclic aromatic hydrocarbons (PAHs) in rubber and its products by microwave extraction-GC / MS was established. The extraction conditions of extraction solvents, extraction time, extraction temperature and the separation of 16 kinds of PAHs Measurement conditions. Use spike recovery test to determine the accuracy of the method. The results showed that the detection limits (S / N = 5) of 16 PAHs ranged from 0.002 to 0.01 mg / L. The average recoveries ranged from 63.58% to 100.5% with RSDs ranging from 1.9% to 9.9%. The method can meet the detection requirements of polycyclic aromatic hydrocarbons in rubber and its products.