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Deuterium Labelled Nonylphenols in anin-vitroModel of Percutaneous Absorption of Environmental Xenoestrogens

 

作者: B. Blume,   M. Kietzmann,   P. Kränke,   M. Möder,   S. Schrader,   M. Wahren,  

 

期刊: Isotopes in Environmental and Health Studies  (Taylor Available online 2000)
卷期: Volume 36, issue 1  

页码: 3-9

 

ISSN:1025-6016

 

年代: 2000

 

DOI:10.1080/10256010008032928

 

出版商: Taylor & Francis Group

 

关键词: Deuterium;hydrogen isotope exchange;isotope dilution analysis;non-ylphenol;percutaneous absorption skin;trace determinations;xenoestrogens

 

数据来源: Taylor

 

摘要:

A technical mixture of isomeric nonylphenols NP is formed as rather persistent degradation product of nonionic surfactants and has become widespread in the environment,e.g., in surface waters. Information about possible pathways for incorporation is needed for risk assessments, as NP has estrogenic properties. NP uptake after skin contact was determined using isolated and perfused bovine udders as models for human skin. NP-d2labelled in the positions ortho to the OH-group was prepared by an exchange procedure which did not measureably change the relative amount of isomers. Samples of udder perfusate, milk equivalent produced during the experiments and skin tissue were taken immediately before administration of 500 mg or 50 mg NP-d2on an udder skin area of 200cm2and then for 5 h. They were analyzed by GC-MS for NP and NP-d2after cleanup by steam distillation and final extraction with SPME fibres. The results are an unambiguous proof of the penetration of NP into the capillary system of living mammals after skin contact.

 

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