摘要
分析了外秦淮河丰水期表层底泥中Pb,Cu,Zn及PAHs的含量分布.结果表明:草场门河段底泥中Pb,Cu,Zn和PAHs的含量都达到了最大值,污染最为严重.Pb和Cu显著相关,具有相似的化学行为.三汊河口至集庆门河段的PAHs主要来自石油类和化石燃料的不完全燃烧(低温、中温)或天然成岩过程,而凤台桥至秦虹大桥河段PAHs主要来源于化石燃料的高温燃烧与裂解.外秦淮河表层底泥中Pb与二环和五环PAHs的相关性显著,易发生交互作用.
This paper described the distribution of lead, copper, zinc and PAHs in the surface sediments of Wai Qinhuai river. The results showed the contents of Pb, Cu, Zn and PAHs in the surface sediments have reached the maximum at Caochangmen. The fact that Pb and Cu have a great correlation indicated they have similar chemical behaviours in the environment. The dominated source of PAHs in the surface sediments from Sanchahekou to Jiqingmen was the incomplete combustion of fossil fuel or natural diagenetic process. And PAHs in the surface sediments from Fengtai bridge to Qinhong bridge were mainly from combustion of fossil fuel in high-temperature. Pb was significantly correlated with two rings PAHs and five rings PAHs, so it was a great possibility to have an interaction between them.
出处
《环境化学》
CAS
CSCD
北大核心
2008年第4期520-522,共3页
Environmental Chemistry
基金
江苏省气象灾害重点实验室(KLME060208)
江苏省高校自然科学研究计划(05KJB610074)
江苏省教育厅高校自然科学基金项目(2535)
国家自然科学基金资助项目(40775012)
公益性行业(气象)科研专项(GYHY-QX-2007-6-26)
关键词
重金属
PAHS
底泥
外秦淮河
heavy metal, PAHs, surface sediment, Wai Qinhuai river.
