气相色谱与质谱联用测定淮安某县乡镇饮用水中的多环芳烃  

Detection of Polycyclic Aromatic Hydrocarbons in Rural Drinking Water of Huaian City by GC-MS

作　　者：梁存珍[1] 刘卫国[1,2] 於俊杰[3] 陈家庆[1] 

机构地区：[1]北京石油化工学院环境工程系,北京市大兴区清源北路19号102617 [2]武汉理工大学资源与环境工程学院,武汉市洪山区珞狮路122号430070 [3]环境保护部环境与经济政策研究中心

出　　处：《光谱实验室》2012年第5期2777-2782,共6页Chinese Journal of Spectroscopy Laboratory

基　　金：环保部公益性行业科研专项(200909054);北京科技新星计划资助项目(2008B25);环境治理与调控技术北京市优秀教学团队资助项目(PHR201107213)

摘　　要：在淮安某县选取4个镇中的8个村进行布点,分别在2010年7月和12月采集丰水期和枯水期水样,采用固相萃取与气相色谱-质谱联用方法对深层地下水、浅层地下水中的多环芳烃(PAHs)进行检测。检测结果表明,深层地下水在丰、枯水期PAHs总量分别为496.18—1035.06ng/L和82.60—329.03ng/L。浅层地下水丰、枯水期PAHs总量分别为474.69—2310.44ng/L和81.39—518.81ng/L。丰水期PAHs总量高于枯水期。5个水样中苯并(a)芘超标,最大超标0.69倍。采用优化的USEPA风险评价模型,对PAHs进行人体健康风险评价,其致癌风险水平在2×10-8—3.92×10-6之间,部分水样致癌风险超过10-6的水质监控值。Thirty four water samples from eight villages of 4 towns in a county of Huainan were collected in July（high flow period） and December in 2010（low flow period）.The water samples from deep underground water and shallow groundwater were analyzed for 16 PAHs by solid phase extraction（SPE） coupled with GC-MS.Concentrations of total PAHs in deep underground water during high and low flow period were respectively ng/L 496.18ng/L to 1035.06ng/L and from 82.60ng/L to 329.03ng/L.Concentrations of total PAHs in shallow groundwater during high and low flow period were respectively from 474.69ng/L to 2310.44ng/L and from 81.39ng/L to 518.81ng/L.Concentrations of total PAHs in high flow period were higher than in low flow period.Benzo（a）pyrene concentrations in five samples exceeded the standard level,and the maximal concentration of benzo（a）pyrene was 0.69 times higher than the standard level.The human body health risk of PAHs was assessed by the optimal USEPA assessment model,and the risk level was in the range of 2×10^-8— 3.92×10^-6,and the carcinogenic risk of some water samples exceeded the recommended risk index（10^-6）.

关 键 词：饮用水 多环芳烃 固相萃取 气相色谱-质谱法 风险评价 

分 类 号：O657.63[理学—分析化学]