Document Detail


Determination of triclosan and methyl triclosan in environmental solid samples by matrix solid-phase dispersion and gas chromatography-mass spectrometry.
MedLine Citation:
PMID:  20845378     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In this study, a method for the determination of triclosan (TCS) and methyl triclosan (MTCS) in soil and sewage sludge samples from municipal wastewater treatment plants was developed based on the extraction by matrix solid-phase dispersion. After extraction, the analytes were derivatized with N-(tert-butyldimethylsilyl)-N-methyl-trifluoroacetamide for their determination by isotope dilution GC with electron impact MS detection in the SIM mode, using (13)C(12)-labeled compounds as internal standards. Recoveries of MTCS and TCS from laboratory spiked sludge samples were in the range from 95.7 to 101.0% and 97.4 to 101.3%, respectively. In the case of soil samples, the recoveries of MTCS and TCS ranged from 98.4 to 101.0% and 98.7 to 99.0%, respectively. The limits of detection (S/N=3) varied from 0.10 to 0.12 ng/g for sewage sludge samples and from 0.05 to 0.08 ng/g for soil samples. The validated method was used to assess the levels of TCS and MTCS in sewage sludge collected from 19 wastewater treatment plants located in Madrid (Spain) and in soil samples collected from agricultural fields in Madrid. Both compounds were detected in all the sludge samples at concentrations ranging from 54 to 2987 ng/g dry weight for TCS and from 4 to 311 ng/g dry weight for MTCS. The levels encountered in soil were much lower, 0.8 to 4.7 ng/g dry weight for TCS and 0.3 to 3.8 ng/g dry weight for MTCS.
Authors:
Consuelo Sánchez-Brunete; Ester Miguel; Beatriz Albero; José L Tadeo
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of separation science     Volume:  33     ISSN:  1615-9314     ISO Abbreviation:  J Sep Sci     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-16     Completed Date:  2011-01-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088554     Medline TA:  J Sep Sci     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  2768-75     Citation Subset:  IM    
Affiliation:
Departamento de Medio Ambiente, INIA, Ctra de la Coruña, Madrid, Spain.
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MeSH Terms
Descriptor/Qualifier:
Cities
Gas Chromatography-Mass Spectrometry / methods*
Limit of Detection
Quality Control
Reproducibility of Results
Sewage / chemistry*
Soil / chemistry*
Spain
Triclosan / analogs & derivatives*,  analysis*
Chemical
Reg. No./Substance:
0/Sewage; 0/Soil; 0/methyl triclosan; 3380-34-5/Triclosan

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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