Phthalate Metabolites in Urine Samples from School Children in Taipei, Taiwan

Archives of Environmental Contamination and Toxicology
Jia BaoGuang-Hui Dong

Abstract

In 2011, Taiwan authorities reported that two phthalates, including di-(2-ethylhexyl) phthalate and di-iso-nonyl phthalate, were intentionally introduced into a variety of foods and beverages during the course of 15 years. However, little is known about body burdens of phthalate contaminations in local residents, especially children recently living in Taiwan. In the present study, five target phthalate metabolite analytes-including mono-methyl phthalate, mono-ethyl phthalate, mono-n-butyl phthalate (MBP), mono-benzyl phthalate (MBzP), and mono-(2-ethylhexyl) phthalate (MEHP)-in spot urine samples were analyzed by way of high performance liquid chromatography-tandem mass spectrometry-mass spectrometry. All of the urine samples were collected from 225 healthy school children between 12 and 15 years of age (average 13.6) in the Taipei area, Taiwan, between 2009 and 2010. As the dominant urinary phthalate metabolites in Taiwanese school children, MEHP and MBP contributed 61 and 29 % of all of the target analytes, respectively. MEHP had the highest median of 29.8 μg/g creatinine (range of 13.1-72.8), which was greater than those reported for school children in the other countries during the same period, whereas MBP had a median of 1...Continue Reading

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