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题名: A new cleanup method of dioxins in sediment using large volume injection gas chromatography online coupled with liquid chromatography
作者: Tang, Fengmei1, 2;  Ni, Yuwen1;  Zhang, Haijun1;  Li, Yun1;  Jin, Jing1;  Wang, Longxing1;  Chen, Jiping1
关键词: Dioxins ;  Online cleanup ;  Gas chromatography ;  Liquid chromatography ;  Large volume injection
刊名: ANALYTICA CHIMICA ACTA
发表日期: 2012-06-04
DOI: 10.1016/j.aca.2012.04.004
卷: 729, 页:73-79
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: A new cleanup method was developed and validated for the determination of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in sediment. The sample extract was first treated with sulfuric acid and then cleaned up by a large volume injection gas chromatography online coupled with liquid chromatography (LVI-GC-LC) system. PCDD/Fs in the extract were separated by a GC column (DB-5), selected cut, cool trapped and transferred to a LC column (alumina). The fraction of PCDD/Fs eluted from the alumina column was collected and concentrated for the instrumental analysis. Under the optimized conditions, LVI-GC-LC method achieved the recoveries of 57-102% for 2,3,7,8-substituted PCDD/Fs, which met the requirements of US Environmental Protection Agency (EPA) Method 1613 and were better than those obtained using the conventional multistep column cleanup method. Meanwhile, compared with the conventional method, the limit of detection (LOD) values of 2,3,7,8-substituted PCDD/Fs cleaned up by LVI-GC-LC method were decreased due to the high-efficiency removal of interferents. These results suggested that the LVI-GC-LC cleanup method was a promising alternative to the multistep cleanup procedure for the determination of dioxins in environmental samples. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
关键词[WOS]: DIBENZO-P-DIOXINS ;  MAGNETIC-RESONANCE-SPECTROSCOPY ;  SOLVENT VAPOR EXIT ;  POLYCHLORINATED DIBENZOFURANS ;  ENVIRONMENTAL-SAMPLES ;  MASS SPECTROMETRY ;  PERFORMANCE ;  COLUMNS ;  SYSTEM ;  PCBS
语种: 英语
WOS记录号: WOS:000304681900010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142990
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Tang, Fengmei,Ni, Yuwen,Zhang, Haijun,et al. A new cleanup method of dioxins in sediment using large volume injection gas chromatography online coupled with liquid chromatography[J]. ANALYTICA CHIMICA ACTA,2012,729:73-79.
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