Levels and trends of polycyclic aromatic hydrocarbons in the Indo-Pacific humpback dolphins from the Pearl River Estuary (2012-2017)
Levels and trends of polycyclic aromatic hydrocarbons in the Indo-Pacific humpback dolphins from the Pearl River Estuary (2012-2017)
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DOI：
10.1016/j.marpolbul.2018.04.058
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发表时间：
2018-06-01
影响因子：
5.8
通讯作者：
Wu, Yuping
中科院分区：
文献类型：
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作者：
Gui, Duan;Zhang, Lingli;Wu, Yuping
我们调查了2012-2017年期间从中国珠江口（PRE）采样的37头印度太平洋驼背豚鲸脂中16种美国环保局优先考虑的多环芳烃的水平和趋势。与全世界海豚物种相比，西格玛（16）多环芳烃浓度（17.6-6080纳克/克（-1）湿重）处于中等水平。与PRE其他地区的个体相比，属于多环芳烃热点的座头鲸具有显著更高的Sigma（16）多环芳烃水平。此外，伶仃洋沿岸搁浅海豚的Sigma（16）PAHs污染水平明显高于西四区，反映了环境中PAHs的异质性分布。一个显着的下降，鲸脂西格玛（16）多环芳烃水平的研究期间，观察到的一系列混杂因素的控制。这一趋势具有显著的统计学意义（p < 0.0001），表明多环芳烃的含量正在逐渐减少。
We investigated the levels and trends of the 16 USEPA priority PAHs in the blubber of 37 Indo-Pacific humpback dolphins sampled during the period 2012-2017 from the Pearl River Estuary (PRE), China. Sigma(16)PAHs concentrations (17.6-6080 ng g(-1) wet weight) were at median level compared to dolphin species worldwide. Humpback dolphins affiliated with the hotspots of PAHs, had significantly higher levels of Sigma(16)PAHs than individuals from the other areas in the PRE. Moreover, dolphins stranded on the coast of Lingdingyang are significantly more contaminated by Sigma(16)PAHs than those in the West-four region of the PRE, which appears to reflect the heterogeneous distribution of PAHs in the environment. A marked decline in blubber Sigma(16)PAHs levels is observed over the studied period, with the control of a range of confounding factors. The trend is strongly and statistically significant (p < 0.0001), indicating that the loading of PAHs are gradually being reduced.