Abstract:
:Triclosan (TCS) is an endocrine disruptor which may affect endocrine function, antibiotic resistance, and thyroid hormone homeostasis. As a broad-spectrum antimicrobial agent used in medical and personal care products, TCS was frequently detected in human urine, indicating widespread human exposure to this chemical. Over-the-counter medicines (OTCs) may be a potential source of human exposure to TCS. In this study, 84 OTCs were collected from Guangzhou, South China, including medicines intended for both children and adults. We determined the concentration of TCS in OTCs and the estimated daily intakes (EDIs) of TCS by evaluating OTCs for different age groups of the Chinese population. Our results indicated over half of the evaluated medicines contained TCS and the highest concentration reached 7.825 ng/g, with a median value of 0.017 ng/g. TCS was frequently found in adult medicines (detected in 85% of samples), and the concentrations were significantly higher than those in children's medicines. TCS in OTCs may come from packaging materials, cultivated soils, or production process (Chinese patent medicines). The EDIs of TCS (estimated with 95th concentration in OTC medicines) were 0.305, 0.191, 0.287, 0.331, and 0.135 and 0.110 ng/kg-bw/day for infants, toddlers, children, teenagers, and adult females and males, respectively. Compared to other potential sources, human exposure to TCS from OTCs was limited in China-much less than TCS exposure through personal care products or indoor dust.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Gao CJ,Jia LL,Guo Ydoi
10.1007/s10661-018-7111-7subject
Has Abstractpub_date
2018-11-19 00:00:00pages
728issue
12eissn
0167-6369issn
1573-2959pii
10.1007/s10661-018-7111-7journal_volume
190pub_type
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