Occurrence of Benzophenone (cas 119-61-9)s, parabens and triclosan in the Yangtze River of China, and the implications for human exposure
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Add time:09/01/2019 Source:sciencedirect.com
Humans could be exposed to ingredients in personal care products (PCPs) via ingestion of water originated from contaminated water source, yet little attention has been focused on the distribution of benzophenones, parabens and triclosan in the Yangtze River water from China so far. Benzophenones, parabens and triclosan were analyzed in the water samples from 20 various sites in the middle reach of the Yangtze River, China from March to July, and September during 2015. Among the targeted compounds, p-hydroxybenzoic acid (PHBA, a paraben metabolite) was found with the highest concentration (median: 510 ng/L), followed by benzophenone-1 (2.79 ng/L), methylparaben (MeP, median 2.72 ng/L) and triclosan (median: 1.85 ng/L). Significant differences were observed in seasonal variations for most observed compounds. Parabens and benzophenones showed higher concentrations in spring while triclosan and PHBA showed higher concentration in summer. Spatial variations of benzophenone-1 were observed among 20 sampling sites, whereas other benzophenones, parabens and triclosan distributed evenly comparatively. Human exposure assessment showed higher estimated daily intake of the detected compounds for infants and toddlers from water than adults, implicating that infants may experience a higher exposed risk than adults. This study provides evidence that parabens, benzophenones and triclosan commonly occurred in the Yangtze River.
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