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１引言 多氯联苯（ＰＣＢｓ）的性质稳定、毒性大，贻贝等海洋生物能摄取和富集海水中的ＰＣＢｓ，因此研究其中ＰＣＢｓ的测定具有重要意义。生物样品中 ＰＣＢｓ的测定一般要进行预分离处理，索氏萃取分离 ＰＣＢｓ耗时至少８ｈ，加碱皂化生物组织再以液－液萃取提取ＰＣＢｓ
1 Introduction Polychlorinated biphenyls (PCBs) are stable in nature and toxic, and mussels and other marine organisms can ingest and enrich PCBs in seawater. Therefore, it is of great significance to study the determination of PCBs in them. The determination of PCBs in biological samples is generally pre-separation treatment, Soxhlet extraction of PCBs takes at least 8h, alkaline saponification of biological tissues and then liquid-liquid extraction of PCBs