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Article

Waterborne and Dietary Bioaccumulation of Organophosphate Esters in Zooplankton Daphnia magna

Key Laboratory of Pollution Process and Environmental Criteria of Ministry of Education and Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
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Academic Editor: Paul B. Tchounwou
Int. J. Environ. Res. Public Health 2022, 19(15), 9382; https://doi.org/10.3390/ijerph19159382
Received: 7 July 2022 / Revised: 27 July 2022 / Accepted: 28 July 2022 / Published: 31 July 2022
(This article belongs to the Section Environmental Science and Engineering)
Organophosphate esters (OPEs) are widely used as an additive in flame retardants, plasticizers, lubricants, consumer chemicals, and foaming agents. They can accumulate in aquatic organisms from water (waterborne exposure) and food (dietary exposure). However, the bioaccumulation characteristics and relative importance of different exposure routes to the bioaccumulation of OPEs are relatively poorly understood. In this study, Daphnia magna were exposed to fo typical OPEs (tris(2-chloroethyl) phosphate (TCEP), tris(1,3-dichloro-2-propyl) phosphate (TDCIPP), tris(2-butoxyethyl) phosphate (TBOEP), and triphenyl phosphate (TPHP)), and their toxicokinetics under waterborne and dietary exposure routes were analyzed. For the waterborne exposure route, the bioconcentration factors (BCFs) increased in the order of TBOEP, TCEP, TDCPP, and TPHP, which were consistent with their uptake rate constants. TPHP might have the most substantial accumulation potential while TBOEP may have the smallest potential. In dietary exposure, the depuration rate constants of four OPEs were different from those in the waterborne experiment, which may indicate other depuration mechanisms in two exposure routes. The biomagnification factors (BMFs) of fur OPEs were all below 1, suggesting trophic dilution in the transfer of four OPEs from Scenedesmus obliquus to D. magna. Except for TBOEP, the contributions of dietary exposure were generally lower than waterborne exposure in D. magna under two exposure concentrations. This study provides information on the bioaccumulation and contribution of OPEs in D. magna via different exposure routes and highlights the importance of considering different exposure routes in assessing the risk of OPEs. View Full-Text
Keywords: organophosphate esters; bioaccumulation; dietary exposure; waterborne exposure; toxicokinetics organophosphate esters; bioaccumulation; dietary exposure; waterborne exposure; toxicokinetics
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MDPI and ACS Style

Liu, W.; Zhang, H.; Ding, J.; He, W.; Zhu, L.; Feng, J. Waterborne and Dietary Bioaccumulation of Organophosphate Esters in Zooplankton Daphnia magna. Int. J. Environ. Res. Public Health 2022, 19, 9382. https://doi.org/10.3390/ijerph19159382

AMA Style

Liu W, Zhang H, Ding J, He W, Zhu L, Feng J. Waterborne and Dietary Bioaccumulation of Organophosphate Esters in Zooplankton Daphnia magna. International Journal of Environmental Research and Public Health. 2022; 19(15):9382. https://doi.org/10.3390/ijerph19159382

Chicago/Turabian Style

Liu, Wenxin, Hong Zhang, Jiaqi Ding, Wanyu He, Lin Zhu, and Jianfeng Feng. 2022. "Waterborne and Dietary Bioaccumulation of Organophosphate Esters in Zooplankton Daphnia magna" International Journal of Environmental Research and Public Health 19, no. 15: 9382. https://doi.org/10.3390/ijerph19159382

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