Salinity effects on the bioaccumulation and biokinetic processes of eight trace elements (Cu, Cr, Pb, Ni, Zn, Cd, Se, and As) in the black mussel Septifer virgatus were explored in the present study. A 6-week laboratory waterborne exposure first showed that salinity (15, 20, 25, and 30) had relatively weak or even no significant influence on trace element accumulation in the black mussels. Biokinetics including uptake and efflux was then quantified in the mussels at different salinities. Uptake rates of Ni and Zn were negatively correlated with the salinity, while the uptake of Cd was not significantly influenced by salinity. The efflux rates of Ni and Zn also exhibited an inverse relationship with salinity, whereas the case of Cd was on the contrary. Biokinetic modeling showed that the salinity effects on uptake and elimination of Ni and Zn counteracted with each other, thus weakening the combined effects on accumulation. Overall, the response of uptake to salinity could weakened, removed, or even overturned by elimination, depending on the relative magnitude of the change of the two processes. The combined effects of uptake and elimination further led to negative, no, or positive relationship between trace element accumulation and salinity.

盐度对黑贻贝Septifer virgatus中八个微量元素（Cu，Cr，Pb，Ni，Zn，Cd，Se和As）的生物累积和生物动力学过程的影响在本研究中进行了探索。经过为期6周的实验室水接触，首先显示了盐度（15、20、25和30）对黑贻贝中微量元素的积累相对较弱甚至没有显着影响。然后在不同盐度的贻贝中对包括摄取和外排在内的生物动力学进行定量。Ni和Zn的吸收速率与盐度呈负相关，而Cd的吸收不受盐度的显着影响。Ni和Zn的流出速率也与盐度呈反比关系，而Cd则相反。生物动力学模型表明，盐度对镍和锌的吸收和消除的影响相互抵消，从而减弱了对累积的综合影响。总体而言，对盐分的吸收反应可能会减弱，消除，甚至被消除推翻，这取决于两个过程变化的相对幅度。吸收和消除的综合作用进一步导致微量元素积累与盐度之间呈负，无或正关系。