土壤中芳香胺3,3′-二氯联苯胺的测定研究  

Determination of 3,3′-Dichlorobenzidine in Soil

作　　者：孙翠香[1] 王首君 毕鸿亮[1] 高原雪[1] 蔡洋[1] 

机构地区：[1]广东省生态环境与土壤研究所,广东省农业环境综合治理重点实验室,广东广州510650 [2]广州市花都区秀全中学,广东广州501800

出　　处：《生态环境学报》2015年第3期529-532,共4页Ecology and Environmental Sciences

基　　金：广东省科学院分析测试基金资助项目(201402)

摘　　要：建立了气相色谱/质谱来测定土壤中芳香胺3,3′-二氯联苯胺的方法。该化合物通过超声波辅助萃取,选择正己烷-丙酮混合溶剂（体积比为1∶1）或乙酸乙酯,以及Cleanert S C18-SPE柱进行净化。该方法测定土壤中3,3’-二氯联苯胺的检出限为2.8μg·kg^-1（信噪比S/N=3）;3,3′-二氯联苯胺的加标回收率平均值为89.7%（n=5）;重复进样RSD为3.55%（n=5）。该方法的线性范围是120-2 400μg·kg^-1,相关系数0.999 5。该方法也可用于沉积物中3,3′-二氯联苯胺的测定。This study developed the determination of 3,3′-Dichlorobenzidine in soil sample by gas chromatography- Mass spectrometry. The compounds were extracted from soil by sonication assisted extraction with volume of the mixture of acetone and hexane （V：V=1：1） or ethylacetate as extraction solvent; an Cleanert S C18-SPE was carried out to remove interferences. Average recoveries from spiked samples were 89.7% （n=5） and the estimated limits of detection varied 2.8 μg·kg^-1 （S/N=3）. The repeatability （RSD） equals 3.55%. The response obtained with this method was linear over the range assayed, 120-2400 μg·kg^-1 with correlation coefficient of 0.9995. The validated method can also be used to investigate 3,3′-Dichlorobenzidine in Sediment Matrices samples.

关 键 词：3 3′-二氯联苯胺 气相色谱/质谱 土壤 

分 类 号：X132[环境科学与工程—环境科学]