Sources and distribution of aliphatic and polyaromatic hydrocarbons in sediments of Jiaozhou Bay, Qingdao, China.
Sources and distribution of aliphatic and polyaromatic hydrocarbons in sediments of Jiaozhou Bay, Qingdao, China.
复制标题
DOI：
10.1016/j.marpolbul.2005.08.010
复制
发表时间：
2006-02
影响因子：
5.8
通讯作者：
Xuchen Wang;Song Sun;Haiqing Ma;Ying Liu
中科院分区：
文献类型：
--
作者：
Xuchen Wang;Song Sun;Haiqing Ma;Ying Liu
对中国青岛胶州湾 25 个地点收集的表层沉积物进行了脂肪族（正构烷烃）和多环芳烃（PAH）的组成和分布测量。正构烷烃和多环芳烃总量浓度范围分别为0.5～8.2μg/gdw和0.02～2.2μg/gdw，正构烷烃和多环芳烃的分布在海湾内呈现出较大的空间变化。沉积物中PAHs的分布以三环或三环以上化合物为主。高碳氢化合物含量通常出现在与海湾人为影响高和港口活动相关的区域。计算的碳氢化合物指数表明，石油污染是正构烷烃的主要来源，而热解源和成岩源均对胶州湾表层沉积物产生了多环芳烃的贡献。与其他受污染的海岸沉积物相比，目前胶州湾沉积物中脂肪烃和多环芳烃的污染程度相对较低。
The composition and distribution of aliphatic (n-alkanes) and polyaromatic hydrocarbons (PAHs) were measured for the surface sediments collected at 25 sites from Jiaozhou Bay, Qingdao, China. Total n-alkanes and PAH concentrations ranged from 0.5 to 8.2μg/gdw and 0.02 to 2.2μg/gdw, respectively, and the distribution of both n-alkanes and PAHs showed large spatial variations in the bay. The distribution of PAHs in the sediments was predominated by the three or more ring compounds. High hydrocarbon levels were generally found in the areas associated with high anthropogenic impact and port activities in the bay. The calculated hydrocarbon indexes suggest that petroleum contamination was the main source of n-alkanes, while both pyrolytic and petrogenic sources contributed PAHs to the surface sediments of Jiaozhou Bay. In comparison to other polluted coastal sediments, the level of contamination from both aliphatic hydrocarbons and PAHs in Jiaozhou Bay sediments is relatively low at the present time.