Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1021/ac991005l
Titel (primär) High extraction efficiency for POPs of real contaminated soil samples using ASE
Autor Hubert, A.; Wenzel, K.-D.; Manz, M.; Weißflog, L.; Engewald, W.; Schüürmann, G.
Quelle Analytical Chemistry
Erscheinungsjahr 2000
Department OEC; ANA; COE
Band/Volume 72
Heft 6
Seite von 1294
Seite bis 1300
Sprache englisch

Systematic investigations were performed to study the dependence of the extraction efficiency of persistent organic pollutants (POPs), including chlorobenzenes, HCH isomers, DDX, PCB congeners, and PAHs, on the accelerated solvent extraction (ASE) operating variables solvent and temperature. Mixed soil samples from two locations with considerable differences in soil properties and contamination in the Leipzig−Halle region (Germany) were used. The objective was to optimize ASE for the extraction of POPs from real soil samples and to improve on the results achieved with Soxhlet extraction (SOX). Solvents with differing polarities were tested. Quadruple and triple determinations were performed on the two soils, respectively, between 20 and 180 °C in 20 °C steps. All the results were compared with those obtained by SOX, as well as, in some cases during preliminary studies, by ultrasonic extraction (USE). In ASE, the optimum conditions proved to be two extraction steps at 80 and 140 °C (average RSD 10.7%) with three static cycles (extraction time 35 min) using toluene as solvent and at a pressure of 15 MPa. Owing to the superior analyte/matrix separation by ASE, in many cases for real soil samples analytical values better by up to 1 order of magnitude or even more were obtained compared to SOX results.

dauerhafte UFZ-Verlinkung
Hubert, A., Wenzel, K.-D., Manz, M., Weißflog, L., Engewald, W., Schüürmann, G. (2000):
High extraction efficiency for POPs of real contaminated soil samples using ASE
Anal. Chem. 72 (6), 1294 - 1300 10.1021/ac991005l