法国勒阿弗尔城市流域多环芳烃的质量平衡：多环芳烃从大气到出水口的迁移与归宿
Mass balance for polycyclic aromatic hydrocarbons in the urban watershed of Le Havre (France): transport and fate of PAHs from the atmosphere to the outlet.
作者信息
Motelay-Massei A, Garban B, Tiphagne-larcher K, Chevreuil M, Ollivon D
机构信息
Département de Géologie, UMR CNRS 6143, Faculté des Sciences et Techniques, Université de Rouven, 10 Boulevard de Broglie, 76821 Mont-Saint-Aignan Cedex, France.
出版信息
Water Res. 2006 Jun;40(10):1995-2006. doi: 10.1016/j.watres.2006.03.015.
Polycyclic aromatic hydrocarbon (PAH) concentrations have been monitored simultaneously in ambient air, bulk atmospheric deposition and runoff waters during one year in a small urban watershed of the Seine river basin (France). PAH fluxes from the atmosphere to the outlet of the urban watershed have been calculated to establish a mass balance for PAHs. PAH flux in runoff waters was 5.2 kg km(-2) yr(-1) while PAH atmospheric deposition was 0.21 kg km(-2) yr(-1). The comparison between atmospheric input and output by runoff has shown the importance of street deposits that appeared to be the most important source of PAHs for surface waters in urban areas. PAH profiles in the various compartments showed the fate of PAHs in the air-water system: proportion of carcinogenic PAHs was more important in runoff waters (35%) than in bulk atmospheric deposition (22%) and air (6%).
在法国塞纳河流域的一个小型城市集水区内，对多环芳烃（PAH）在环境空气中、大气总沉降物和径流水中的浓度进行了为期一年的同步监测。通过计算大气向城市集水区出口的PAH通量，以建立PAHs的质量平衡。径流水中的PAH通量为5.2 kg km(-2) yr(-1)，而大气中PAH的沉降量为0.21 kg km(-2) yr(-1)。大气输入与径流输出之间的比较表明，街道沉积物很重要，它似乎是城市地区地表水中PAHs的最重要来源。各个区域的PAH分布情况显示了PAHs在空气 - 水系统中的归宿：致癌PAHs在径流水中的比例（35%）高于大气总沉降物（22%）和空气中的比例（6%）。
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