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DOI10.1016/j.scitotenv.2013.05.020
Determination of polychlorinated biphenyls in soil and sediment by selective pressurized liquid extraction with immunochemical detection
Van Emon, Jeanette M.1; Chuang, Jane C.2; Bronshtein, Alisa3; Altstein, Miriam3
发表日期2013-10-01
ISSN0048-9697
卷号463页码:326-333
英文摘要

A selective pressurized liquid extraction (SPLE) method was developed for a streamlined sample preparation/cleanup to determine Aroclors and coplanar polychlorinated biphenyls (PCBs) in soil and sediment. The SPLE was coupled with an enzyme-linked immunosorbent assay (ELISA) for an effective analytical approach for environmental monitoring. Sediment or soil samples were extracted with alumina, 10% AgNO3 in silica, and sulfuric add impregnated silica with dichloromethane at 100 degrees C and 2000 psi. The SPLE offered simultaneous extraction and cleanup of the PCBs and Aroclors, eliminating the need for a post-extraction cleanup prior to ELISA Two different ELISA methods: (1) an Aroclor ELISA and (2) a coplanar PCB ELISA were evaluated. The Aroclor ELISA utilized a polyclonal antibody (Ab) with Aroclor 1254 as the calibrant and the coplanar PCB ELISA kit used a rabbit coplanar PCB Ab with PCB-126 as the calibrant. Recoveries of Aroclor 1254 in two reference soil samples were 92 +/- 2% and 106 +/- 5% by off-line coupling of SPLE with ELISA. The average recovery of Aroclor 1254 in spiked soil and sediment samples was 92 +/- 17%. Quantitative recoveries of coplanar PCBs (107-117%) in spiked samples were obtained with the combined SPLE-ELISA The estimated method detection limit was 10 ng g(-1) for Aroclor 1254 and 125 pg g(-1) for PCB-126. Estimated sample throughput for the SPLE-ELISA was about twice that of the stepwise extraction/cleanup needed for gas chromatography (GC) or GC/mass spectrometry (MS) detection. ELISA-derived uncorrected and corrected Aroclor 1254 levels correlated well (r = 0.9973 and 0.9996) with the total Aroclor concentrations as measured by GC for samples from five different contaminated sites. ELISA-derived PCB-126 concentrations were higher than the sums of the 12 coplanar PCBs generated by GC/MS with a positive correlation (r = 0.9441). Results indicate that the SPLE-ELISA approach can be used for quantitative or qualitative analysis of PCBs in soil and sediments. To our knowledge, this is the first report of an SPLE-ELISA approach not requiring a post-extraction cleanup step for detecting Aroclors and coplanar PCBs in soil and sediment. Published by Elsevier B.V.


英文关键词Selective pressurized liquid extraction;ELISA;PCBs;Aroclors
语种英语
WOS记录号WOS:000325831200038
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/58178
作者单位1.US EPA, Natl Exposure Res Lab, Las Vegas, NV 89193 USA;
2.Battelle Mem Inst, Columbus, OH 43201 USA;
3.Agr Res Org, Volcani Ctr, Inst Plant Protect, IL-50250 Bet Dagan, Israel
推荐引用方式
GB/T 7714
Van Emon, Jeanette M.,Chuang, Jane C.,Bronshtein, Alisa,et al. Determination of polychlorinated biphenyls in soil and sediment by selective pressurized liquid extraction with immunochemical detection[J]. 美国环保署,2013,463:326-333.
APA Van Emon, Jeanette M.,Chuang, Jane C.,Bronshtein, Alisa,&Altstein, Miriam.(2013).Determination of polychlorinated biphenyls in soil and sediment by selective pressurized liquid extraction with immunochemical detection.SCIENCE OF THE TOTAL ENVIRONMENT,463,326-333.
MLA Van Emon, Jeanette M.,et al."Determination of polychlorinated biphenyls in soil and sediment by selective pressurized liquid extraction with immunochemical detection".SCIENCE OF THE TOTAL ENVIRONMENT 463(2013):326-333.
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