Spatial and temporal distribution and risk assessment of polycyclic aromatic hydrocarbons in surface seawater from the Haikou Bay, China
Spatial and temporal distribution and risk assessment of polycyclic aromatic hydrocarbons in surface seawater from the Haikou Bay, China
复制标题
海口湾表层海水多环芳烃时空分布及风险评估
DOI：
10.1016/j.marpolbul.2014.12.014
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发表时间：
2015-03-15
影响因子：
5.8
通讯作者：
Diao, Xiaoping
中科院分区：
文献类型：
--
作者：
Li, Yuhu;Li, Ping;Diao, Xiaoping
2013年10月至2014年9月，对海口湾表层沃茨中14种多环芳烃（PAHs）的时空分布特征进行了研究。结果表明，该海域多环芳烃总浓度范围为420.2 ~ 2539.1 ng L-1，平均值为1016.3 ± 455.8 ng L-1，以低分子量多环芳烃（2环和3环多环芳烃）为主。此外，多环芳烃的浓度和组成模式显示空间和时间的变化。基于异构体比值的来源分析表明，多环芳烃主要来源于石油和燃烧过程。生态毒理学风险评价结果表明，与以往的研究相比，该海域多环芳烃单项污染物的潜在风险已达到中等偏高水平，多环芳烃总浓度也达到较高水平。研究结果为海口湾表层沃茨中14种多环芳烃的污染水平提供了重要信息，并建议该区域应采取相应的防治措施。(c)2014爱思唯尔有限公司版权所有。
Spatial and temporal distributions of 14 polycyclic aromatic hydrocarbons (PAHs) were investigated in surface waters of Haikou Bay, China from October 2013 to September 2014. The total PAHs concentrations ranged from 420.2 to 2539.1 ng L-1 with the average value of 1016.3 +/- 455.8 ng L-1, which were predominated by low molecular weight PAHs (2- and 3-ring PAHs). Moreover, PAHs displayed spatial and temporal variations in the concentration and composition pattern. Source analysis based on isomer ratios indicated that the PAHs mostly originated from petroleum and combustion processes. An eco-toxicological risk assessment showed that the potential risk of individual PAHs had reached moderate to high levels and the total concentrations of PAHs had also reached a relatively high level compared with previous studies. This study offers important information on the pollution levels of 14 PAHs in the surface waters of Haikou Bay and recommends that prevention and control of PAHs pollution should be implemented in the region. (c) 2014 Elsevier Ltd. All rights reserved.