Vidal-Liñán Leticia, Villaverde-de-Sáa Eugenia, Rodil Rosario, Quintana José Benito, Beiras Ricardo
Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Estrada Colexio Universitario s/n, 36310 Vigo, Galicia, Spain.
Department of Analytical Chemistry, Nutrition and Food Sciences, IIAA-Institute for Food Analysis and Research, University of Santiago de Compostela, Constantino Candeira s/n, Santiago de Compostela, Spain.
Chemosphere. 2018 Jan;190:267-271. doi: 10.1016/j.chemosphere.2017.09.144. Epub 2017 Sep 29.
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, the tissular concentrations were 418, 263 and 327 μg kgd.w., respectively. The kinetics of bioaccumulation of BP-4 and OC significantly fitted to an asymptotic model with BCF values of 905 L kg and 2210 L kg, respectively. Measured bioaccumulation of the hydrophilic chemical BP-4 was much higher than predicted by K-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.
在本研究中，调查了4-甲基苄亚基樟脑（4-MBC）、二苯甲酰甲烷（BP-3）、二苯甲酰基甲烷（BP-4）、桂皮酸盐（OC）和二乙氨基苯甲酸辛酯（OD-PABA）等有机紫外线过滤剂在野生地中海贻贝中的生物累积动力学。水中4-MBC、BP-4和OC的吸收和累积非常迅速，在暴露于1μg/L仅24小时后，组织浓度分别为418、263和327μg/kg干重。BP-4和OC的生物累积动力学显著符合渐近模型，生物浓缩系数（BCF）值分别为905L/kg和2210L/kg。亲水性化学品BP-4的实测生物累积量远高于基于辛醇-水分配系数（K）的生物浓缩模型预测值，这将导致对实际风险的显著低估。另一方面，BP-3和OD-PABA的吸收模式表明贻贝对这两种化学品具有生物转化能力。
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