作　　者： ; ; ; ; ; ; (马盛幍）;

机构地区： 中国科学院广州地球化学研究所有机地球化学国家重点实验室

出　　处： 《分析测试学报》 2013年第10期1160-1165,共6页

摘　　要： 建立了土壤样品中氯代二（噁）英、溴代二（噁）英、多氯联苯和多溴联苯醚四类化合物的同步分离前处理方法.应用硝酸银复合硅胶柱将四类化合物分成含氯（PCBs和PCDD/Fs）和含溴（PBDEs和PBDD/Fs）两大类,再用弗罗里硅土柱分别对PCBs和PCDD/Fs、PBDEs和PBDD/Fs进行两两分离,最终实现四类结构、性质相近化合物的完全分离.该方法的回收率和相对标准偏差（RSD）分别为PCDD/Fs：61％～83％,1.4％～14.2％; PBDD/Fs：71％～110％,2.8％～14.9％; PCBs：68％～92％,3.6％～15.2％; PBDEs：81％～87％,10.9％～17.4％.方法应用于土壤样品中四类化合物的同步分析,并与目前常用的分析方法进行比对,两者间的分析结果相差不大于12.5％,验证了方法的准确性和可靠性. A sample cleanup procedure for the simultaneous determination of PCDD/Fs,PBDD/Fs,PCBs and PBDEs in soil was developed.Firstly,four series of halogenated organic contaminants were separated into chlorinated （PCBs and PCDD/Fs） and brominated （PBDEs and PBDD/Fs）groups,with multi-layer gel column containing silver nitrate silica.Florisil column was subsequently used to separate PCBs from PCDD/Fs and PBDEs from PBDD/Fs,respectively.The results indicated that the four series contaminants could be completely separated.Recoveries and relative standard deviations（RSDs） of standard-spiked samples were as follows：PCDD/Fs：61％-83％,1.4％-14.2％; PBDD/Fs：71％-110％,2.8％-14.9％ ; PCBs：68％-92％,3.6％-15.2％;PBDEs：81％-87％,10.9％-17.4％.This method was applied in the simultaneous detection of four series of compounds in soil samples,and the results were no obvious difference with that of the reported method（the deviation of two methods was not more than 12.5％）,which implys that the developed method has good accuracy and reliability.

关 键 词： 氯代二 噁 英 溴代二 噁 英 多氯联苯 多溴联苯醚 土壤

领　　域： [理学] [理学] [理学]