Membrane-assisted solvent extraction of polychlorinated biphenyls in river water and other matrices combined with large volume injection–gas chromatography–mass spectrometric detection

• Published in: Journal of Chromatography A Vol. 1020; no. 2; pp. 153 - 160
• Main Authors: Schellin, M, Popp, P
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 12-12-2003; Elsevier
• Subjects: Analysis methods; Analytical chemistry; apple juice; Applied sciences; Biological and medical sciences; Chemistry; Chromatographic methods and physical methods associated with chromatography; Environmental analysis; Exact sciences and technology; Extraction methods; Fermented food industries; Food analysis; food contamination; Food industries; Fruit and vegetable industries; Fruit juices; Fundamental and applied biological sciences. Psychology; Gas chromatographic methods; gas chromatography; Gas Chromatography-Mass Spectrometry - methods; Large volume injection; mass spectrometry; Membrane-assisted solvent extraction; Membranes, Artificial; Natural water pollution; Pollution; Polychlorinated biphenyls; Polychlorinated Biphenyls - analysis; Reproducibility of Results; Sensitivity and Specificity; Water analysis; Water Pollutants, Chemical - analysis; Water treatment and pollution; white wines; Wine; Wines and vinegars; Wine; Extraction methods; Water analysis; Polychlorinated biphenyls; Environmental analysis; Food analysis; Fruit juices; Membrane-assisted solvent extraction; Large volume injection; Chemical analysis; Solvent extraction; Sample preparation; Chlorocarbon; Quantitative analysis; Trace analysis; Liquid liquid extraction; Coupled method; Polychlorobiphenyl; Fruit juice; Contamination; Gas chromatography; Apple; Residue; Surface water; Water pollution; River water; Mass spectrometry
• ISSN: 0021-9673
• DOI: 10.1016/j.chroma.2003.08.036

Membrane-assisted solvent extraction was applied to the determination of polychlorinated biphenyls (PCBs) in aqueous samples. The apparatus of membrane-assisted solvent extraction consisted of a 20
ml headspace vial which was filled with 15
ml of the aqueous sample. The membrane bag was placed into the vial and the extraction took place in an agitator. After extraction, the analytes were transferred into the inlet of a gas chromatograph by large volume injection. A mass-selective detector was used. The whole procedure was fully automated. The work included optimization of the extraction conditions (stirring rate and extraction time) and the influence of matrix effects like salt addition and the presence of organic solvents was studied. Calibration was performed using injection volumes of 100 and 400
μl. Several parameters like linearity and reproducibility of the procedure were determined. At optimized conditions detection limits in the ng/l range were achieved. The effectiveness of the method towards real samples was tested by analyzing river water, white wine and apple juice.