PMID- 10740873
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20191120
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 72
IP  - 6
DP  - 2000 Mar 15
TI  - High extraction efficiency for POPs in real contaminated soil samples using 
      accelerated solvent extraction.
PG  - 1294-300
AB  - 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 degrees C in 20 degrees 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 degrees 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.
FAU - Hubert, A
AU  - Hubert A
AD  - Department of Chemical Ecotoxicology, UFZ Center for Environmental Research, 
      Leipzig, Germany.
FAU - Wenzel, KD
AU  - Wenzel KD
FAU - Manz, M
AU  - Manz M
FAU - Weissflog, L
AU  - Weissflog L
FAU - Engewald, W
AU  - Engewald W
FAU - Schuurmann, G
AU  - Schuurmann G
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
EDAT- 2000/03/31 00:00
MHDA- 2000/03/31 00:01
CRDT- 2000/03/31 00:00
PHST- 2000/03/31 00:00 [pubmed]
PHST- 2000/03/31 00:01 [medline]
PHST- 2000/03/31 00:00 [entrez]
AID - 10.1021/ac991005l [doi]
PST - ppublish
SO  - Anal Chem. 2000 Mar 15;72(6):1294-300. doi: 10.1021/ac991005l.