摘要
利用气相色谱-质谱联用仪(GC-MS)对广西清水泉地下河水16种多环芳烃(PAHs)的含量进行了测定,研究地下河水中PAHs的组成、分布规律及主要来源,为城市近郊型地下河系统持久性污染物防治提供科学依据.结果表明,地下河水中∑PAHs浓度范围为162.13—224.99 ng·L-1,平均值为191.71 ng·L-1,PAHs以4环为主,占47.14%;地下河水中PAHs的含量自上游至下游逐渐增大,2—3环PAHs的百分比先升高后降低;PAHs来源解析表明,上游地区PAHs来源以草、木、煤燃烧源为主,中下游地区敢怀村附近PAHs来源为石油源,地下河出口处PAHs来源以石油源和燃烧源的混合源为主.
Water samples in Qingshuiquan underground river were collected to investigate the composition,distribution and sources of 16 priority polycyclic aromatic hydrocarbons（ PAHs）.PAHs were measured by GC / MS. The results showed that the total concentration of 16 PAHs ranged from 162. 13 ng·L^-1to 224. 99 ng·L^-1in underground river,with an average concentration of191.71 ng·L^-1. The PAHs profiles were dominated by 4 ring PAHs,which accounted for 47.14% of16 PAHs. The PAHs levels increased from upstream to downstream reaches of the river. The ratios of2 to 3 rings PAHs first increased then decreased. The PAHs in upstream area mainly came from the combustion of grass, wood and coal. The PAHs in the middle and downstream areas mainly originated from petroleum in Ganhuai village. And the PAHs in the outlet of the underground river mainly came from both petroleum and combustion.
出处
《环境化学》
CAS
CSCD
北大核心
2015年第11期2096-2102,共7页
Environmental Chemistry
基金
国土资源部公益性行业科研专项项目(201411100)
中国地质调查局地质调查项目(1212011220959)
中国地质科学院岩溶地质研究所基本科研业务费项目(201309,2014019)资助
关键词
多环芳烃
城市近郊型
地下河
分布规律
来源
polycyclic aromatic hydrocarbons
suburban type
underground river
distribution rule
source
