【摘要】 [目的 ]了解吴淞工业区空气中PM10 和无机元素污染状况。 [方法 ]在上海市吴淞工业区选择一个监测点 ,使用自动滤式颗粒物收集仪 (automaticcartridgecollectionunit,ACCU)系统进行为期 3个月、8个不同风向的PM10 采样。对采集的样品进行了PM10 浓度分析 ,并使用质子激发X荧光发射 (proton inducedX rayemission ,PIXE)方法分析了 18种无机元素浓度。 [结果 ]由分析结果可知 ,在 8个不同风向 ,PM10 和绝大部分无机元素有着一个低浓度和高浓度风向区域 ,变化趋势基本相同 ,变化范围差异较大 ,有 1至 3个风向对该测点PM10 和绝大部分无机元素浓度水平有着明显影响。PM10最高和最低浓度分别出现在西北 -北 (NW N)和东 -东南 (E SE)风向 ,最高浓度是最低浓度的 3 .9倍 ;18个无机元素最高与最低浓度之比的范围从 2 .5 5到 3 5 .3 0 ,且大部分无机元素的最高浓度出现在南 -西南 (S SW )或西南 -西 (SW W )风向 ,最低浓度出现在东北 -东 (NE E)风向。 [结论 ]各风向的浓度水平与采样点周围居民住宅区、交通道路和不同类型工厂等分布情况明显相关更多还原

【Abstract】 Objective To study ambient pollution of inorganic elements in Wusong industry area. PM 10 samples from eight wind directions were collected with ACCU(Automatic Cartridge Collection Unit)method for 3 months on one monitoring site in Wusong industry area of Shanghai,and PM 10 concentrations were measured in samples and 18 inorganic elements concentrations were measured by PIXE(proton-induced X-ray emission) method. The results indicated that PM 10 and 18 inorganic elements showed a similar tendency in relation of concentrations to wind directions,and 1 to 3 wind directions have significant impact on the ambient concentrations of PM 10 and most inorganic elements.The PM 10 highest concentration appeared when wind was NW-N direction,whereas the lowest in E-SE direction,and the highest concentration is 3.9 times of the lowest one. The ratio between the highest concentration and the lowest one of 18 inorganic elements is from 2.55 to 35.3,and the most of the highest concentrations appeared in S-SW or SW-W directions whereas the lowest concentration in NE-E direction. [Conclusion] The ambient concentrations of PM 10 and most inorganic elements of various wind directions were relevant with resident area,traffic status and different type factories in the vicinity of this monitoring site.更多还原