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Miniaturized and automated sample pretreatment for determination of PCBs in environmental aqueous samples using an on-line microporous membrane liquid-liquid extraction-gas chromatography system

Barri, Thaer LU ; Bergström, Staffan LU ; Norberg, J and Jönsson, Jan Åke LU (2004) In Analytical Chemistry 76(7). p.1928-1934
Abstract
A new, fast, and automated sample pretreatment technique for determination of lipophilic organic compounds in aqueous samples has been developed and applied to the determination of polychlorinated biphenyls (PCBs) in environmental river water. It is based on miniaturized microporous membrane liquid-liquid extraction coupled on-line to gas chromatography (GC) with electron capture detection. The heart of the system that simultaneously connects the sample pretreatment step to the final GC analysis has been named the extracting syringe (ESy). The ESy carries a miniaturized membrane extraction card attached to an electrically and mechanically designed installment and is mounted directly over a GC injector for fully automated injection of the... (More)
A new, fast, and automated sample pretreatment technique for determination of lipophilic organic compounds in aqueous samples has been developed and applied to the determination of polychlorinated biphenyls (PCBs) in environmental river water. It is based on miniaturized microporous membrane liquid-liquid extraction coupled on-line to gas chromatography (GC) with electron capture detection. The heart of the system that simultaneously connects the sample pretreatment step to the final GC analysis has been named the extracting syringe (ESy). The ESy carries a miniaturized membrane extraction card attached to an electrically and mechanically designed installment and is mounted directly over a GC injector for fully automated injection of the extract. A method was developed to extract 10 PCB congeners from 1-mL water samples (after addition of 40% acetonitrile) with an extraction time of 10 min. The optimized methodology showed good linearity (in the dynamic concentration range of 5 ng L-1-1 mug L-1), enrichment factors of 33-40 times, repeatable extractions (RSD 2-5%, n = 4), a (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Analytical Chemistry
volume
76
issue
7
pages
1928 - 1934
publisher
The American Chemical Society
external identifiers
  • pmid:15053653
  • wos:000220618400026
  • scopus:1842423826
ISSN
1520-6882
DOI
10.1021/ac035089g
language
English
LU publication?
yes
id
02a87f0b-c7e6-4391-b6fc-247dd130a519 (old id 138540)
date added to LUP
2007-06-26 12:52:41
date last changed
2017-11-26 03:23:42
@article{02a87f0b-c7e6-4391-b6fc-247dd130a519,
  abstract     = {A new, fast, and automated sample pretreatment technique for determination of lipophilic organic compounds in aqueous samples has been developed and applied to the determination of polychlorinated biphenyls (PCBs) in environmental river water. It is based on miniaturized microporous membrane liquid-liquid extraction coupled on-line to gas chromatography (GC) with electron capture detection. The heart of the system that simultaneously connects the sample pretreatment step to the final GC analysis has been named the extracting syringe (ESy). The ESy carries a miniaturized membrane extraction card attached to an electrically and mechanically designed installment and is mounted directly over a GC injector for fully automated injection of the extract. A method was developed to extract 10 PCB congeners from 1-mL water samples (after addition of 40% acetonitrile) with an extraction time of 10 min. The optimized methodology showed good linearity (in the dynamic concentration range of 5 ng L-1-1 mug L-1), enrichment factors of 33-40 times, repeatable extractions (RSD 2-5%, n = 4), a},
  author       = {Barri, Thaer and Bergström, Staffan and Norberg, J and Jönsson, Jan Åke},
  issn         = {1520-6882},
  language     = {eng},
  number       = {7},
  pages        = {1928--1934},
  publisher    = {The American Chemical Society},
  series       = {Analytical Chemistry},
  title        = {Miniaturized and automated sample pretreatment for determination of PCBs in environmental aqueous samples using an on-line microporous membrane liquid-liquid extraction-gas chromatography system},
  url          = {http://dx.doi.org/10.1021/ac035089g},
  volume       = {76},
  year         = {2004},
}