Liu Wen-Xin, Hu Jing, Chen Jiang-Lin, Fan Yong-Sheng, Tao Shu
Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
Huan Jing Ke Xue. 2008 May;29(5):1336-41.
Based on the second national baseline survey on marine pollution, the concentration, distribution and potential ecological risk of typical organic pollutants in the benthic mussels from the inshore areas of Yellow Sea were determined. The results indicated that, at over 35% of the total sampling sites, the tissue concentrations of petroleum hydrocarbons were higher than the Category I (15 000 ng/g) of the national marine biological quality standards, and at the sites near Dalian Bay, the tissue concentrations even exceeded the Category II (50 000 ng/g). At minor sites located in Dalian Bay, Weihai and Jiaozhou Bay, relatively high concentrations of polycyclic aromatic hydrocarbons (PAHs) and phthalate esters (PAEs) occurred, while the concentrations of PAHs and PAEs in mussels at most other sites were low. The dominant median and high rings components indicated pyrolytic procedures as the main source of local PAHs, and DBP and DEHP were the major constitution of phthalate esters. At all the sites, the tissue concentrations of PCBs were generally low (< 10 ng/g). The sites with DDTs concentrations over the Category I of the national quality standards were mainly situated in the southern coasts of Yellow Sea, and the predominant fractions were the metabolites of DDT, i.e., DDD and DDE. p, p'-DDT was detected in mussel species at all the monitoring sites, especially at the sites close to Dalian Bay and Penglai (fraction > 50%), which indicated potential inputs from the neighboring areas. Accordingly, petroleum hydrocarbons and PAHs in mussels at the coastal areas of Dalian Bay, Weihai and Jiaozhou Bay were high, the tissue DDTs levels at the sitesnear Jiaozhou Bay and Haizhou Bay were high, these sea areas had therefore higher ecological risk, and new inputs of DDT in the inshore areas of Dalian Bay and Penglai may threat on the benthic surroundings.
基于第二次全国海洋污染基线调查，对黄海近岸海域底栖贻贝中典型有机污染物的浓度、分布及潜在生态风险进行了测定。结果表明，在超过35%的总采样点，石油烃的组织浓度高于国家海洋生物质量标准一类（15000纳克/克），在大连湾附近的采样点，组织浓度甚至超过二类（50000纳克/克）。在大连湾、威海和胶州湾的少数采样点，多环芳烃（PAHs）和邻苯二甲酸酯（PAEs）的浓度相对较高，而其他大多数采样点贻贝中的PAHs和PAEs浓度较低。占主导地位的中高环组分表明热解过程是当地PAHs的主要来源，邻苯二甲酸二丁酯（DBP）和邻苯二甲酸二（2-乙基己基）酯（DEHP）是邻苯二甲酸酯的主要成分。在所有采样点，多氯联苯（PCBs）的组织浓度普遍较低（<10纳克/克）。滴滴涕（DDTs）浓度超过国家质量标准一类的采样点主要位于黄海南部海岸，主要成分是DDT的代谢产物，即滴滴滴（DDD）和滴滴伊（DDE）。在所有监测点的贻贝物种中均检测到p,p'-DDT，尤其是在靠近大连湾和蓬莱的采样点（比例>50%），这表明存在来自邻近地区的潜在输入。因此，大连湾、威海和胶州湾沿海地区贻贝中的石油烃和PAHs含量较高，胶州湾和海州湾附近采样点的组织DDTs水平较高，这些海域因此具有较高的生态风险，大连湾和蓬莱近岸海域DDT的新输入可能对底栖环境构成威胁。
