Abstract
This article reports the first identification of paraben-chlorinated derivatives in river water. Parabens are widely used as preservatives in pharmaceuticals and personal care products. Parabens can be easily chlorinated by chlorinated tap water. The resulting chlorinated derivatives might pose a higher potential risk to humans and ecosystems than the corresponding parent parabens. However, the occurrence of such derivatives in rivers remains unknown so far. We studied 23 parabens and their chlorinated derivatives from rivers receiving effluents from sewage treatment plants in Shizuoka city, in the central Pacific region of Japan. The compounds were extracted by solid-phase extraction with a styrene polymer sorbent, trimethylsilyl-derivatized, and then identified by gas chromatography–mass spectrometry. Six chlorinated parabens and their primary degradation products, two chlorinated hydroxybenzoic acids, were found for the first time in river water. Moreover, in river water, chlorinated derivatives preferentially partition into the suspended-solid phase.
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This work was supported by the Grant-in-Aid for Young Scientists (B) No. 22750140 from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan.
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Terasaki, M., Takemura, Y. & Makino, M. Paraben-chlorinated derivatives in river waters. Environ Chem Lett 10, 401–406 (2012). https://doi.org/10.1007/s10311-012-0367-1
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DOI: https://doi.org/10.1007/s10311-012-0367-1