title: Leaching of bisphenol A from new and old babies' bottles, and new babies' feeding teats.
abstract: Bisphenol A is the monomer used in the manufacture of polycarbonate. Bisphenol A is also known to mimic the female hormone estrogen. In this study, the possibility of the leaching of bisphenol A from polycarbonate babies' bottles and feeding teats was investigated. Bisphenol A was extracted from water samples exposed to the bottles and teats using liquid-liquid extraction. Bisphenol A was analysed by gas chromatograph-mass spectrometer with quadrapole detector in selected ion monitoring mode. Mean leaching of bisphenol A from 100 used babies' bottles when filled with water at 25 degrees C and 80 degrees C were 0.71 +/- 1.65 ng/cm2 (mean +/- standard deviation) and 3.37 +/- 5.68 ng/cm2 respectively. Mean leaching of bisphenol A from 30 new babies' bottles when filled with water at 25 degrees C and 80 degrees C were 0.03 +/- 0.02 ng/cm2 and 0.18 degrees 0.30 ng/cm2 respectively. Bisphenol A was observed to have leached from babies' feeding teats into 37 degrees C water ranged from non-detectable to 22.86 ng/g. The technique employed in this study is fast, reliable and economical.
authors.affiliation: Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia. benjamintan@fastmail.fm
authors.forename: B L L
authors.initials: BL
authors.lastname: Tan
authors.forename: A M
authors.initials: AM
authors.lastname: Mustafa
mesh_terms: D001559:Benzhydryl Compounds; D004968:Estrogens, Non-Steroidal / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D015370:Infant Equipment; D010636:Phenols / Q000302:isolation & purification*; D011076:Polycarboxylate Cement / Q000737:chemistry*; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D004968:Estrogens, Non-Steroidal; D010636:Phenols; D011076:Polycarboxylate Cement; C005506:polycarbonate; C006780:bisphenol A; D000098826:Bisphenol A Compounds