文献类型：期刊文献

英文题名：Rapid determination of benzo[a]pyrene by membrane enrichment coupled with solid-phase constant-wavelength synchronous fluorescence spectrometry

作者：Wang, Lei[1,2];Li, Wei[1,2];Zhang, Feiyu[1,2];Li, Hui[3];Cai, Guimin[4];Li, Bing[4];Qian, Guangbei[4];Du, Yiping[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Ctr Anal & Test, Meilong Rd 130, Shanghai 200237, Peoples R China;[3]Dehong Teachers Coll, Dept Sci & Engn, Xianchi Rd 14, Mangshi 678400, Peoples R China;[4]Shanghai Lengguang Technol Co Ltd, Dapu Rd 350, Shanghai 200000, Peoples R China

年份：2016

卷号：31

期号：6

起止页码：1187

外文期刊名：LUMINESCENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000384014100003)】；

基金：This work was supported by the Science and Technology Commission of Shanghai Municipality, China (14142201400).

语种：英文

外文关键词：membrane filtration; enrichment; solid-phase extraction; synchronous fluorescence

摘要：Normal methods for benzo[a]pyrene (BaP) determination, including gas chromatography-mass spectrometry and liquid chromatography with fluorescence detection, involve expensive instruments and complex separation and purification processes. Based on membrane enrichment, coupled with solid-phase constant-wavelength synchronous fluorescence spectrometry, a simple, fast, sensitive method was proposed for the determination of BaP in water samples. A Nylon membrane was used as the solid-phase extraction material for enrichment. After enrichment, a constant-wavelength synchronous fluorescence spectrum was scanned directly on the membrane-concentrated BaP without elution. Spectral measurement and enrichment conditions were optimized. Under optimum conditions, when using 150 mL sample solutions, the relationship between fluorescence intensity and BaP concentrations in the 0.05-10.00 g L-1 range could be fitted by binomial function with an R-2 value of 0.9973. Limit of detection (LOD) was calculated to be 0.0137 g L-1. The volume of the sample solution was increased to 1000 mL to test if the method could be applied to determine lower BaP concentrations. A linear relationship still existed in the range 2.0-20.0 ng L-1 BaP with an R-2 value of 0.9895, and a LOD of 2.4 ng L-1. The method was also used to measure the BaP concentration in several natural water samples, and recoveries were in the 90-110% range with relative standard deviations (RSDs) in the 0.58-7.93% range. Copyright (c) 2016 John Wiley & Sons, Ltd.