Document Detail


Determination of triclosan, triclocarban and methyl-triclosan in aqueous samples by dispersive liquid-liquid microextraction combined with rapid liquid chromatography.
MedLine Citation:
PMID:  19249787     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In this study, dispersive liquid-liquid microextraction (DLLME) combined with ultra-high-pressure liquid chromatography (UHPLC)-tunable ultraviolet detection (TUV), has been developed for pre-concentration and determination of triclosan (TCS), triclocarban (TCC) and methyl-triclosan (M-TCS) in aqueous samples. The key factors, including the kind and volume of extraction solvent and dispersive solvent, extraction time, salt effect and pH, which probably affect the extraction efficiencies were examined and optimized. Under the optimum conditions, linearity of the method was observed in the range of 0.0500-100 microg L(-1) for TCS, 0.0250-50.0 microg L(-1) for TCC, and 0.500-100 microgL(-1) for M-TCS, respectively, with correlation coefficients (r(2))>0.9945. The limits of detection (LODs) ranged from 45.1 to 236 ng L(-1). TCS in domestic waters was detected with the concentration of 2.08 microg L(-1). The spiked recoveries of three target compounds in river water, irrigating water, reclaimed water and domestic water samples were achieved in the range of 96.4-121%, 64.3-84.9%, 77.2-115% and 75.5-106%, respectively. As a result, this method can be successfully applied for the rapid and convenient determination of TCS, TCC and M-TCS in real water samples.
Authors:
Jie-Hong Guo; Xing-Hong Li; Xue-Li Cao; Yan Li; Xi-Zhi Wang; Xiao-Bai Xu
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Publication Detail:
Type:  Journal Article     Date:  2009-02-13
Journal Detail:
Title:  Journal of chromatography. A     Volume:  1216     ISSN:  1873-3778     ISO Abbreviation:  J Chromatogr A     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-03-23     Completed Date:  2009-09-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9318488     Medline TA:  J Chromatogr A     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  3038-43     Citation Subset:  IM    
Affiliation:
State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center of Eco-Environment Sciences, Chinese Academy of Sciences, Beijing, China.
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MeSH Terms
Descriptor/Qualifier:
Carbanilides / analysis*
Chemical Fractionation / methods*
Chromatography, High Pressure Liquid
Data Interpretation, Statistical
Hydrogen-Ion Concentration
Osmolar Concentration
Sensitivity and Specificity
Solvents / chemistry
Triclosan / analogs & derivatives,  analysis*
Water / chemistry
Water Pollutants, Chemical / analysis*
Chemical
Reg. No./Substance:
0/Carbanilides; 0/Solvents; 0/Water Pollutants, Chemical; 101-20-2/triclocarban; 3380-34-5/Triclosan; 7732-18-5/Water

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


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