长期暴露于全氟十三酸的青鳉鱼体内分布和生物富集

研究了将青鳉鱼长期暴露于不同浓度的全氟羧酸类物质全氟十三酸(PFTriDA)后的器官分布和富集系数.结果显示, PFTriDA最高富集在性腺;其次是卵、肝脏;浓度最低的部分是残体.除了性腺之外,该器官分布与野生中华鲟的一致.在相同暴露浓度下,雄鱼体内各器官的PFTriDA的含量高于雌鱼,机理模型计算进一步表明高母子传递系数是造成雌雄差异的可能原因.随着PFTriDA暴露浓度的升高,鱼体内同一器官的生物富集系数(BCF)呈现下降趋势.

Tissue distribution and bioconcentration of long-term exposure to perfluorotridecanoate acid (PFTriDA) in the medaka (Oryzias Latipes)

While perfluorotridecanoate acid(PFTriDA),a long-chain perfluorinated carboxylic acid,has been widely detected in environment and wildlife in recent years,there is still lack of mechanism information on the tissue distribution and bioconcentration in fish.The tissue distribution and bioconcentration in the medaka(Oryzias Latipes) exposed to different concentrations of PFTriDA was assessed.The highest concentration of PFTriDA was detected in gonad,followed by egg,liver and carcass,which was similar to the ti...