区域环境与生态
郭伟,何孟常,杨志峰,林春野,全向春.大辽河水系表层沉积物中石油烃和多环芳烃的分布及来源[J].环境科学学报,2007,27(5):824-830
大辽河水系表层沉积物中石油烃和多环芳烃的分布及来源
- Distribution and sources of petroleum hydrocarbons and polycyclic aromatic hydrocarbons in sediments from Daliao River watershed, China
- 基金项目：国家重点基础研究发展规划(973)项目(No2004CB418502);国家自然科学基金项目(No20477003)
- 作者
- 单位
- 郭伟
- 北京师范大学环境学院, 水环境模拟国家重点实验室, 北京 100875
- 何孟常
- 北京师范大学环境学院, 水环境模拟国家重点实验室, 北京 100875
- 杨志峰
- 北京师范大学环境学院, 水环境模拟国家重点实验室, 北京 100875
- 林春野
- 北京师范大学环境学院, 水环境模拟国家重点实验室, 北京 100875
- 全向春
- 北京师范大学环境学院, 水环境模拟国家重点实验室, 北京 100875
- 摘要：对大辽河水系的3条干流浑河、太子河和大辽河表层沉积物中石油烃(PHs)和多环芳烃(PAHs)分析表明,PHs总量分布范围为61.37～229.42μg·g-1,PAHs总量分布范围为61.9～840.5ng·g-1.石油烃含量远远高于已报道的世界其它河流和海洋沉积物中的含量,表明大辽河水系沉积物石油烃污染严重;而与世界其它河流和海洋地区相比,多环芳烃污染水平相对偏低.石油烃分布特征为太子河>浑河>大辽河;多环芳烃分布特征为大辽河>太子河>浑河.烃污染来源诊断表明,石油烃污染以陆源植物和人为污染输入为主,多环芳烃污染以石油燃烧热解为主,工业和生活污水是烃污染的主要来源.
- Abstract：Petroleum hydrocarbons (PHs) and polycyclic aromatic hydrocarbons (PAHs) are measured in surface sediment samples from Daliao river watershed. Total PHs and PAHs concentrations ranged from 61.37 to 229.42 μg·g-1 and from 61.9 to 840.5 ng·g-1 dry weight in sediments respectively. The contamination of petroleum hydrocarbons is serious. The level of PAHs in sediments was low, in comparison with values reported from other river and marine systems in the world. The order of PHs and PAHs concentration in sediments were: Taizi River > Hun River > Daliao River and Daliao River > Taizi River > Hun River. The terrestrial plant inputs and anthropogenic activities are the major sources of petroleum hydrocarbons, and petroleum combustion is the main source of pyrolytic PAHs in Daliao River watershed according to hydrocarbons diagnostic ratios. Discharge from municipal, petrochemistry and steel industrial wastewater and runoff might be important sources.
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