Fast determination of -endosulfan, -hexachlorocyclohexane and pentachlorobenzene in the river water from northeast of China
Fast determination of -endosulfan, -hexachlorocyclohexane and pentachlorobenzene in the river water from northeast of China
复制标题
快速测定东北河水中的硫丹、六氯环己烷和五氯苯
DOI：
10.1080/03067319.2018.1475563
复制
发表时间：
2018
影响因子：
2.6
通讯作者：
Ren Nanqi
中科院分区：
文献类型：
--
作者：
Wang Hui;Qu Bo;Liu He;Ding Jie;Ren Nanqi
以磁性磷脂酰胆碱（MPC）为吸附剂，建立了磁性固相萃取富集水样中3种有机氯农药（OCPs）的方法。通过搅拌MPC和水样品的混合物，在单个步骤中进行提取程序。随后，通过外部磁场收集MPC，无需额外的离心或过滤。分析物从MPC解吸，最后通过气相色谱-串联质谱分析。研究了各种参数对有机氯农药回收率的影响。结果表明，磷脂酰胆碱的量和提取时间是提高提取性能的关键，和腐殖酸的存在下，显着降低提取效率。得到的检测限范围为0.1-0.15 ng L-1。水样加标回收率为76.2%~ 101.5%，相对标准偏差为3.8%~ 7.7%。采用该方法测定了东北两条河流地表水中五氯苯、α-六氯环己烷和β-硫丹的含量。
A magnetic solid-phase extraction method for the preconcentration of three organochlorine pesticides (OCPs) from water samples has been proposed, based on magnetic phosphatidylcholine (MPC) as adsorbents. The extraction procedure was carried out in a single step by stirring the mixture of MPC and water samples. Subsequently, the MPC was collected by an external magnetic field without additional centrifugation or filtration. The analytes were desorbed from the MPC and finally analysed by gas chromatography–tandem mass spectrometry. The influence of various parameters on OCPs recoveries was studied. Results show that phosphatidylcholine amount and extraction time were critical in enhancing extraction performance, and the presence of humic acid was shown to significantly reduce the extraction efficiency. The limits of detection obtained were in the range of 0.1–0.15 ng L−1. Recoveries of spiked water samples ranged from 76.2% to 101.5% with relative standard deviations varying from 3.8% to 7.7%. The proposed method was employed for analysis of pentachlorobenzene, α-hexachlorocyclohexane and β-endosulfan in the surface water from two rivers in northeast China.