Li Yuhu, Li Ping, Ma Wandong, Song Qingqing, Zhou Hailong, Han Qian, Diao Xiaoping
College of Agriculture, Hainan University, Haikou 570228, China; Haikou Key Laboratory of Environment Toxicology, Haikou 570228, China.
Haikou Key Laboratory of Environment Toxicology, Haikou 570228, China; College of Plant Protection and Environment, Hainan University, Haikou 570228, China.
Mar Pollut Bull. 2015 Mar 15;92(1-2):244-251. doi: 10.1016/j.marpolbul.2014.12.014. Epub 2015 Feb 2.
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.
2013年10月至2014年9月，对中国海口湾表层水体中14种多环芳烃（PAHs）的时空分布进行了调查。总PAHs浓度范围为420.2至2539.1 ng L(-1)，平均值为1016.3±455.8 ng L(-1)，以低分子量PAHs（2环和3环PAHs）为主。此外，PAHs在浓度和组成模式上呈现出时空变化。基于异构体比例的源分析表明，PAHs主要来源于石油和燃烧过程。生态毒理学风险评估显示，与以往研究相比，单个PAHs的潜在风险已达到中到高水平，PAHs的总浓度也达到了相对较高的水平。本研究提供了关于海口湾表层水体中14种PAHs污染水平的重要信息，并建议该地区应实施PAHs污染的预防和控制措施。
