Risk assessment of human exposure to bioaccessible phthalate esters via indoor dust around the Pearl River Delta

Yuan KANG, Yu Bon MAN, Kwai Chung CHEUNG, Ming Hung WONG

Research output: Contribution to journalArticles

86 Citations (Scopus)

Abstract

There is limited information on the bioaccessible fractions of phthalate esters in indoor dust in order to estimate human exposure. In the present study, workplace dust and settled house dust samples from Hong Kong, Shenzhen, and Guangzhou, the three major cities scattered around the Pearl River Delta (PRD) were collected. Chemical analyses showed that the phthalates in workplace dust ranged from 144 to 1810 μg/g, with dust from shopping malls containing the highest level, and in home dust ranged from 181 to 9240 μg/g. The most abundant phthalate ester found was bis(2-ethylhexyl) phthalate (DEHP) in both workplace dust and home dust, followed by di-n-butyl phthalate (DBP) and di-iso-butyl phthalate (DIBP). Principal Components Analysis (PCA) indicated that indoor dust around PRD showed similar phthalate esters patterns of composition. A significant correlation was observed between total phthalate esters concentrations in home dust and the number of year of house construction (p < 0.05). The oral bioaccessibility of phthalate esters in indoor dust ranged from 10.2% (DEHP) to 32% (DMP). Risk assessment indicated that the dominant exposure routes varied in different phthalate esters exposure profiles and the dermal contact exposure pathway was identified as an important route for indoor DEHP exposure. Copyright © 2012 American Chemical Society.

Original languageEnglish
Pages (from-to)8422-8430
JournalEnvironmental Science and Technology
Volume46
Issue number15
Early online date13 Jul 2012
DOIs
Publication statusPublished - 07 Aug 2012

Citation

Kang, Y., Man, Y. B., Cheung, K. C., & Wong, M. H. (2012). Risk assessment of human exposure to bioaccessible phthalate esters via indoor dust around the Pearl River Delta. Environmental Science and Technology, 46(15), 8422–8430. doi: 10.1021/es300379v

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