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Optimized cleanup method for the determination of short chain polychlorinated n-alkanes in sediments by high resolution gas chromatography/electron capture negative ion-low resolution mass spectrometry
Gao, Yuan; Zhang, Haijun; Chen, Jiping; Zhang, Qing; Tian, Yuzeng; Qi, Peipei; Yu, Zhengkun
关键词Short Chain Polychlorinated N-alkanes Silica Gel Alumina Column Chromatography Cleanup
刊名ANALYTICA CHIMICA ACTA
2011-10-10
DOI10.1016/j.aca.2011.07.041
703期:2页:187-193
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
关键词[WOS]COLUMN GC/ECNI-MS ; CHLORINATED PARAFFINS ; ENVIRONMENTAL-SAMPLES ; LAKE-ONTARIO ; QUANTIFICATION ; IONIZATION ; TOXAPHENE ; STANDARD ; PCBS
英文摘要The performances of three adsorbents, i.e. silica gel, neutral and basic alumina, in the separation of short chain polychlorinated n-alkanes (sPCAs) from potential interfering substances such as polychlorinated biphenyls (PCBs) and organochlorine pesticides were evaluated. To increase the cleanup efficiency, a two-step cleanup method using silica gel column and subsequent basic alumina column was developed. All the PCB and organochlorine pesticides could be removed by this cleanup method. The very satisfying cleanup efficiency of sPCAs has been achieved and the recovery in the cleanup method reached 92.7%. The method detection limit (MDL) for sPCAs in sediments was determined to be 14 ng g(-1). Relative standard deviation (R.S.D.) of 5.3% was obtained for the mass fraction of sPCAs by analyzing four replicates of a spiked sediment sample. High resolution gas chromatography/electron capture negative ion-low resolution mass spectrometry (HRGC/ECNI-LRMS) was used for sPCAs quantification by monitoring [M-HCl](center dot-) ions. When applied to the sediment samples from the mouth of the Daliao River, the optimized cleanup method in conjunction with HRGC/ECNI-LRMS allowed for highly selective identifications for sPCAs. The sPCAs levels in sediment samples are reported to range from 53.6 ng g(-1) to 289.3 ng g(-1). C(10)-and C(11)-PCAs are the dominant residue in most of investigated sediment samples. (C) 2011 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000295704300010
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142459
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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GB/T 7714
Gao, Yuan,Zhang, Haijun,Chen, Jiping,et al. Optimized cleanup method for the determination of short chain polychlorinated n-alkanes in sediments by high resolution gas chromatography/electron capture negative ion-low resolution mass spectrometry[J]. ANALYTICA CHIMICA ACTA,2011,703(2):187-193.
APA Gao, Yuan.,Zhang, Haijun.,Chen, Jiping.,Zhang, Qing.,Tian, Yuzeng.,...&Yu, Zhengkun.(2011).Optimized cleanup method for the determination of short chain polychlorinated n-alkanes in sediments by high resolution gas chromatography/electron capture negative ion-low resolution mass spectrometry.ANALYTICA CHIMICA ACTA,703(2),187-193.
MLA Gao, Yuan,et al."Optimized cleanup method for the determination of short chain polychlorinated n-alkanes in sediments by high resolution gas chromatography/electron capture negative ion-low resolution mass spectrometry".ANALYTICA CHIMICA ACTA 703.2(2011):187-193.
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