【摘要】 [目的]了解上海市吴淞地区总悬浮颗粒物(TSP)中无机态元素浓度状况。[方法]在该地区选择了有代表性的4个监测点进行TSP分级采样,并使用质子激发X荧光发射方法(简称PIXE方法)直接测定样品中S、K、Ca、Ti和Cr等12种无机态元素。[结果]各元素在4个监测点浓度的差别不等;S、Cr和Pb等高浓度基本在<0.43μm和>0.65～2.1μm粒径,Ca、Ti、Fe和Ni基本在>3.3μm各粒径;各监测点之间的S、K、Ca、Cu和Zn分级浓度相关系数有显著性,且相关性较高。[结论]各无机态元素在各监测点的浓度明显与监测点所在位置及周边情况有关,且与吴淞工业区的产业结构明显有关;各监测点的S、K、Ca、Cu和Zn主要受同一源影响,Cr和Ni主要受就近污染源影响;S、Cr和Pb等主要以细颗粒形式存在,是典型的污染元素。更多还原

【Abstract】 [Objective] To investigate inorganic element concentration status in TSP in Wusong area.[Methods] Four typical monitoring sites were chosen to collect TSP samples in diverse levels.12 inorganic elements such as S,K,Ca,Ti,Cr etc.were measured directly with PIXE method.[Results] There were differences on four monitoring sites.The diameters of high concentration S,Cr,Pb were < 0.43 μm and in 0.65～2.1 μm range simultaneously;Ca,Ti,Fe and Ni appeared in 3.3～11 μm;the correlations of S,K,Ca,Cu and Zn diverse-level concentration among these sites were significant.[Conclusion] The inorganic elements concentrations on each site were clearly relevant with sampling positions and environment nearby and were related with industrial structure in that area.S,Ca,K,Cu and Zn were mostly affected by same pollution sources on all sites,whereas Cr and Ni were mostly affected by local pollution on different site;S,Cr and Pb existed in fine particles,they were typical pollution elements.更多还原