College of Chemistry and Environmental Science, HeBei University, Baoding, Hebei Province, China.
Bull Environ Contam Toxicol. 2013 Jul;91(1):1-5. doi: 10.1007/s00128-013-0993-8. Epub 2013 Apr 18.
In this study, we examined concentrations of polybrominated diphenyl ethers (PBDEs) in mudsnails (Cipangopaludina cahayensis) and sediment samples from an electronic waste recycling area to investigate the correlation between PBDE accumulation and age. The results showed that PBDE accumulation did not increase with age, suggesting a dynamic balance between the uptake, depuration and biotransformation of PBDEs relative to growth dilution in mudsnails. We infer that this phenomenon is associated with low absorption efficiencies, rapid depuration rates and high biotransformation rates of PBDEs. BDE-209 contributed only up to about 5 %, whereas BDE-209 was the dominant congener and contributed up to 90 % of the total PBDEs in surface sediments. The difference in PBDE congener pattern between mudsnails and sediments showed a low bioaccumulation potential for these compounds in mudsnails.
在这项研究中，我们检测了电子废物回收区的泥螺（Cipangopaludina cahayensis）和沉积物样本中多溴二苯醚（PBDEs）的浓度，以研究 PBDE 积累与年龄之间的相关性。结果表明，PBDE 积累与年龄无关，这表明相对于泥螺的生长稀释，PBDE 吸收、排泄和生物转化之间存在动态平衡。我们推断，这种现象与 PBDEs 的低吸收效率、快速排泄率和高生物转化率有关。BDE-209 的贡献仅约为 5%，而 BDE-209 是主要的同系物，在表层沉积物中占总 PBDEs 的 90%。泥螺和沉积物中 PBDE 同系物模式的差异表明这些化合物在泥螺中的生物累积潜力较低。
