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长期以来 ,人们对多氯联苯类有机物在水 沉积物中的迁移、吸附 解吸及降解等行为进行了广泛的研究 ,但是 ,在分析环境样品中的多氯联苯时难以准确定量 ,特别是从环境介质中准确提取多氯联苯非常困难 ,因此 ,有必要建立快速、精确的提取技术 ,以取得最大的提取效率 .沉积物中多
Extensive studies have been conducted on the migration, adsorption, desorption and degradation of PCBs in water sediments for a long period of time. However, it is difficult to accurately quantify polychlorinated biphenyls in environmental samples, especially Accurate extraction of PCBs from environmental media is very difficult and therefore it is necessary to establish a rapid and accurate extraction technique for maximum extraction efficiency.