Boom A, Marsalek J
Department of Water pollution Control, Agricultural University, Wageningen, The Netherlands.
Sci Total Environ. 1988 Aug 1;74:133-48. doi: 10.1016/0048-9697(88)90134-9.
Accumulations of polycyclic aromatic hydrocarbons in a snowpack were studied in an industrial urban area with numerous anthropogenic sources of PAHs. Average PAH loadings stored in the snowpack were determined, plotted on a map of the study area, and arenal distribution approximated by isoloading contours. The loading contours exhibited a marked elongation in the direction of prevailing winds. The unit-area deposition rates observed in the study area exceeded the typical rates reported for other urban areas, and were the highest immediately downwind of a steel plant. PAH levels in snowmelt were well below the freshwater aquatic life toxicity criteria, but exceeded both the WHO drinking water standard and the U.S. EPA carcinogenic criteria at the 10(-5) risk level.
在一个有众多多环芳烃人为源的工业城区，对积雪中多环芳烃的积累情况进行了研究。测定了积雪中储存的多环芳烃平均负荷，绘制在研究区域地图上，并通过等负荷等值线近似表示区域分布。负荷等值线在盛行风方向上呈现出明显的伸长。研究区域观测到的单位面积沉积速率超过了其他城区报道的典型速率，且在一家钢铁厂的下风向处最高。融雪中的多环芳烃水平远低于淡水水生生物毒性标准，但在10^(-5)风险水平下超过了世界卫生组织饮用水标准和美国环境保护局的致癌标准。
