Liquid chromatographic trace enrichment with on‐line capillary gas chromatography for the determination of organic pollutants in aqueous samples
作者:
E. Noroozian,
F. A. Maris,
M. W. F. Nielen,
R. W. Frei,
G. J. de Jong,
U. A. Th. Brinkman,
期刊:
Journal of High Resolution Chromatography
(WILEY Available online 1987)
卷期:
Volume 10,
issue 1
页码: 17-24
ISSN:0935-6304
年代: 1987
DOI:10.1002/jhrc.1240100104
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: Coupled LC‐GC;Retention gap;LC trace enrichment;Aqueous samples;Organic pollutants
数据来源: WILEY
摘要:
AbstractTrace enrichment for the GC analysis of a series of chlorinated pesticides and polychlorinated biphenyls (PCBs) in aqueous samples has been achieved through a simple on‐line technique involving sorption on an LC micro‐precolumn followed by direct elution into a gas chromatograph with hexane. A 5‐m retention gap coupled to the capillary GC column served as the recipient of a relatively large sample volume (ca.100 μl) introduced into the GC. Partially concurrent solvent evaporation during sample introduction allowed a large sample capacity. Recoveries of more than 95% were observed for the majority of the compounds studied. Using 1.0 ml aqueous samples, detection limits of less than 1 ppt were found. The applicability of the developed method was demonstrated for a river water
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