Jansson B, Wideqvist U
Int J Environ Anal Chem. 1983;13(4):309-21. doi: 10.1080/03067318308071601.
Several recent reports indicate that both toxaphene (polychlorocamphene, PCC) and chlordane are widespread pollutants in our environment. These insecticides, both complex mixtures of chlorinated hydrocarbons, are difficult to separate from each other. Thus the analyses of them in environmental samples are difficult and furthermore complicated by interferences from other chlorinated hydrocarbons such as PCB and DDT compounds. Mass fragmentography using the negative ions formed by chemical ionization proved to be useful to selectively detect the toxaphenes and the chlordanes without interferences from DDT. High concentrations of PCB still influence on the results and have to be removed in the clean-up procedure.
最近的几份报告表明，毒杀芬（多氯莰烯，PCC）和氯丹都是我们环境中广泛存在的污染物。这些杀虫剂都是氯代烃的复杂混合物，彼此难以分离。因此，对环境样品中的它们进行分析很困难，而且由于受到其他氯代烃（如多氯联苯和滴滴涕化合物）的干扰而变得更加复杂。事实证明，使用化学电离形成的负离子进行质量碎片分析有助于选择性地检测毒杀芬和氯丹，而不受滴滴涕的干扰。高浓度的多氯联苯仍然会影响结果，必须在净化过程中去除。
