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Procedure of determination of volatile trihalomethanes in human urine with pervaporation and gas chromatography

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This work presents the development of a novel procedure for the determination of trihalomethanes (THMs) in human urine samples based on: (1) pervaporation (PV) of analytes from urine samples as a convenient analyte isolation/enrichment technique; (2) direct aqueous injection of the extracts onto the column of a gas chromatograph equipped with an electron capture detector (DAI-GC-ECD). Basic parameters of the new PV-DAI-GC-ECD procedure were evaluated. The calibration curves were linear in the concentration range examined. Intermediate precision of the procedure was good, at the same level of about 20% for all analytes. The method detection limits were below 0.10 µg L-1 for all analytes. The enrichment factors did not differ significantly for water and urine samples, indicating little or no matrix effects.
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Keywords: Biomonitoring; Pervaporation; Trihalomethanes; Validation

Document Type: Research Article

Affiliations: 1: Chemical Faculty, Department of Analytical Chemistry, Gdansk University of Technology (GUT), 80-952 Gdansk, Poland 2: Faculty of Chemistry, Membrane Processes Group, Nicolaus Copernicus University, 87-100 Torun, Poland

Publication date: May 1, 2007

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