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中文摘要：
为了确定南宁市清水泉地下河水中多环芳烃的分布特征,2014年12月沿途采集了13个地下河水样品,利用液液萃取和气相色谱-质谱联用仪（GC-MS）测定南宁清水泉地下河水样品的多环芳烃（PAHs）。结果显示,清水泉地下河水中共检出15种单体;地下河水中∑PAHs浓度范围为162.13-224.99 ng/L,平均值为191.71 ng/L,PAHs以2～3环为主,占PAHs总量的49.36%;地下河水中PAHs的含量自上游至下游逐渐增大,是因为污染源不断汇入及地下管道的特殊环境造成的;2～3环PAHs的百分比先升高后减降低,这可能与地下河对4～6环PAHs的吸附作用及沿途排污有关。
英文摘要：
In order to understand distribution characteristics of PAHs in water form Qingshuiquan underground river in Nanning,the water samples were collected from underground river in December 2014. PAHs in water from Qingshuiquan underground river were measured using the combined method of liquid-liquid extraction and GC/MS. The results indicated that 15 kinds of PAHs were detected. The concentration of ∑PAHs in water ranges from 162.13 ng/L to 224.99 ng/L,with an average concentration of 191.71 ng/L. The predominant PAHs in water were 2～3 rings PAHs,accounting for 49.36% of ∑ PAHs. The PAHs levels increased from the upstream to the downstream because of pollution source discharge and underground river pipeline environment. The ratios of 2 to 3 rings PAHs first increased then decreased,which could be owed to the adsorption effect to 4～6 rings and pollution discharge along the underground river.
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