The occurrence and spatial-temporal distribution of tetrabromobisphenol A in the coastal intertidal zone of Qingdao in China, with a focus on toxicity assessment by biological monitoring.
The occurrence and spatial-temporal distribution of tetrabromobisphenol A in the coastal intertidal zone of Qingdao in China, with a focus on toxicity assessment by biological monitoring.
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DOI：
10.1016/j.chemosphere.2017.07.033
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发表时间：
2017-10
期刊：
影响因子：
8.8
通讯作者：
Wenjing Gong;Liyan Zhu;Tian-Tian Jiang-Tian;Cui Han
中科院分区：
文献类型：
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作者：
Wenjing Gong;Liyan Zhu;Tian-Tian Jiang-Tian;Cui Han
四溴双酚 A (TBBPA) 是一种广泛使用的阻燃剂，越来越多地被发现是水生环境中的污染物。本研究的主要目标是评估青岛周边六个地点的 TBBPA 污染水平，并通过针对桡足类物种的两代毒性研究评估其生物毒性。化学监测中，海水样品中TBBPA的浓度范围为nd至1.8μg/L。接下来，生物指示剂监测以1.8μg/L为中间暴露浓度，定量评价TBBPA对Pseudodiaptomus inopinus人口性状的影响。结果表明，随着世代的发展，桡足类动物对 TBBPA 暴露变得更加敏感，即使在环境浓度 (1.8 µg/L) 下也是如此。 TBBPA 的有害影响进一步增加了无节幼体死亡率并损害了桡足到成年期的发育。本研究表明，在青岛市全部6个采样点均测量了TBBPA的水污染状况。因此，目前的结果呼吁减少四溴双酚A向海洋环境的排放，以避免损害桡足类的繁殖和发育。
Tetrabromobisphenol A (TBBPA) is a widely used flame retardant that has increasingly been found as contaminant in aquatic environments. The main goal of this study was to evaluate the pollution level of TBBPA at six locations around Qingdao and assess its biotoxicity through a two-generation toxicity study looking at a copepod species. In the chemical monitoring, the concentration of TBBPA in seawater samples ranged from nd to 1.8 μg/L. Next, the biological indicator monitoring used 1.8 μg/L as the middle exposure concentration to perform quantitative evaluations of the influence of TBBPA on the demographic traits ofPseudodiaptomus inopinus. The results showed that copepods became more sensitive to TBBPA exposure even in environmental concentration (1.8 μg/L) as the generations developed. The detrimental effects of TBBPA further increased naupliar mortality and impaired copepodite development to adulthood. This study demonstrated that the water pollution condition of TBBPA was measured at all 6 sampling locations of Qingdao. Therefore, the present results call for a decreased discharge of TBBPA into the marine environment to avoid impairing copepod reproduction and development.