Document Detail


Determination of total phthalates in urine by isotope-dilution liquid chromatography-tandem mass spectrometry.
MedLine Citation:
PMID:  15639459     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Diesters of 1,2-benzenedicarboxylic acid are a family of industrial compounds called "phthalates." The physical and chemical properties of these diesters, and therefore their potential uses, depend on the structure of the dialkyl or alkyl/aryl side chain. The urinary concentrations of phthalate monoesters, which are metabolites, have been used as biomarkers of human exposure to specific phthalates. However, several phthalates, particularly those with side chains of eight or more carbon atoms, are complex mixtures of isomers. For these, the phthalate metabolites to be used as biomarkers of exposure have not been unequivocally identified. We developed a method for assessing total exposure to phthalates, including the isomeric mixtures of high molecular weight phthalates, by measuring the concentration of phthalic acid (PA) in human urine after acid hydrolysis of the phthalate metabolites to PA. The present method accurately assesses total exposure to phthalates without noticeable contamination from the ubiquitous phthalates in the environment, but it gives no information about the parent phthalate.
Authors:
Kayoko Kato; Manori J Silva; Larry L Needham; Antonia M Calafat
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of chromatography. B, Analytical technologies in the biomedical and life sciences     Volume:  814     ISSN:  1570-0232     ISO Abbreviation:  J. Chromatogr. B Analyt. Technol. Biomed. Life Sci.     Publication Date:  2005 Jan 
Date Detail:
Created Date:  2005-01-10     Completed Date:  2005-05-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  101139554     Medline TA:  J Chromatogr B Analyt Technol Biomed Life Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  355-60     Citation Subset:  IM    
Affiliation:
Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Chromatography, High Pressure Liquid / methods*
Humans
Mass Spectrometry / methods*
Phthalic Acids / urine*
Reproducibility of Results
Chemical
Reg. No./Substance:
0/Phthalic Acids

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


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