Analysis of organochlorine pesticides in surface water of the Songhua River using magnetoliposomes as adsorbents coupled with GC-MS/MS detection
Analysis of organochlorine pesticides in surface water of the Songhua River using magnetoliposomes as adsorbents coupled with GC-MS/MS detection
复制标题
磁脂质体吸附GC-MS/MS检测松花江地表水中有机氯农药
DOI：
10.1016/j.scitotenv.2017.11.046
复制
发表时间：
2018
影响因子：
9.8
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
建立了一种简单、有效的磁性脂质体吸附提取河水中有机氯农药的方法。该方法通过吸附磁体快速分离磁性脂质体，避免了传统固相萃取中大体积样品上样耗时的过柱过程。Fe 3 O 4表面形成的脂质双层通过疏水作用对待测物表现出很强的吸附能力，两性离子头基赋予磁性脂质体外表面亲水性，提高了吸附剂在样品基质中的分散性.通过气相色谱-串联质谱法检测目标分析物，获得的检测限在0.04-0.35 ng L− 1范围内。日内和日间的相对标准偏差分别为2-5%和4- 7%。采用该方法对松花江沿着两个城市不同季节的地表水样品中6种有机氯农药进行了分析。与传统方法相比，该方法可减少有机溶剂的消耗，缩短样品制备时间。
A simple and effective method based on magnetic separation has been developed for the extraction of organochlorine pesticides (OCPs) from river water samples using magnetoliposomes as adsorbents. This method avoided the time-consuming column passing process of loading large volume samples in traditional SPE through the rapid isolation of magnetoliposomes with an adscititious magnet. Lipid bilayers formed on the surface of Fe3O4showed great adsorptive tendency towards analytes through hydrophobic interactions, and zwitterions headgroups endowed the outer surface of magnetoliposomes with hydrophilicity to improve the dispersing property of adsorbents in the sample matrix. The target analytes were detected by gas chromatography-tandem mass spectrometry, and the limits of detection obtained are in the range of 0.04–0.35 ng L− 1. The relative standard deviations of intra- and inter-day are in the range of 2–5% and 4–7%, respectively. The proposed method was employed for analysis of six OCPs in the surface water samples from two cities along the Songhua River in different seasons. Compared with the traditional methods, the proposed method could reduce the consumption of the organic solvent and shorten the sample preparation time.