Bioaccumulation of UV filters in Mytilus galloprovincialis mussel
This is the postprint (accepted manuscript) version of the article published in Chemosphere https://doi.org/10.1016/j.chemosphere.2017.09.144 ; In this study the bioaccumulation kinetics of organic UV filters, such as 4-MBC, BP-3, BP-4, OC and OD-PABA in wild Mytilus galloprovincialis mussels was investigated. The uptake and accumulation of waterborne 4-MBC, BP-4 and OC was very rapid, and after only 24 h of exposure to 1 μg L−1, the tissular concentrations were 418, 263 and 327 μg kg−1d.w., respectively. The kinetics of bioaccumulation of BP-4 and OC significantly fitted to an asymptotic model with BCF values of 905 L kg−1 and 2210 L kg−1, respectively. Measured bioaccumulation of the hydrophilic chemical BP-4 was much higher than predicted by Kow-based bioconcentration models, which would lead to a marked underestimation of actual risk. On the other hand, the patterns of uptake found for BP-3 and OD-PABA suggest biotransformation ability of mussels for these two chemicals ; his work was financed by the Galician Government (Xunta de Galicia) through the Research Project 10MDS700006PR and GRC2013-020, by the Spanish Government through the Research Projects CTM2016-77945-C3 and CTM2014-56628-C3-2-R, and FEDER/ERDF. The first two authors were granted with an FPU and an FPI fellowships, respectively, from the Spanish Government ; SI