Chemical characteristics of aerosols

Chemical characteristics of aerosols at coastal station in Hong Kong.Ⅱ.Environmental behavior of trace elements during t

Abstract： An one-year of sampling aerosol program was carried out during the period of April 1995 to April 1996 atcoastal region, Cape D'Aguilar, in Hong Kong. The trace element composition of aerosol particles(TSP and PM10)were measured and analyzed by using the Instrumental Neutron Activation Analysis (INAA) and Inductive CouplePlasma-Mass Spectrometry(ICP-MS) techniques. The results showed that the polluted elements such as: V, Zn,As, Pb, Cd, Sb, I, Se, Bi, with high enrichment factor( E. F) values, are derived from anthropogenic sources ,while Sc, Al, Fe, Mn, Sm, La, Sr are less than 10 in E. F, these elements are related the crust and soil. Theconcentration of the trace elements are present seasonal variation i.e. summer low and winter high, whereas the Vor noncrustal V(V* ) present summer high and winter low, this phenomenon might be explained by local or regionaloil combustion sources. Use three type of elemental ratio, e.g. La/Sm, Mn* /V* and Bi/Al indicate that both TSPand PM10 of La/Sm ratios are mainly related to soil and dust, Mn*/V* are probably represent fossil combustion andBi/Al are possibly associated with refuse incineration, ferromanganese alloys and aluminum production. The varimaxrotation factor analysis for trace elements was performed. By means of the absolute principal component analysis(APCA) and multiple regression, the contribution of trace elements to possible sources and overall means of traceelements were estimated. The results showed that the present station is impacted by the anthropogenic species,although the quantities are different during the summertime and wintertime. 作 者： K.S.Lam    L.Cheng    S.C.Kot    C.W.Tsang   作者单位： K.S.Lam(Department of Civil and Structural Engineering, the Hong Kong Polytechnic University, Hung Hom, Hong Kong, China)

L.Cheng(Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China)

S.C.Kot(Department of Mechanical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Hong Kong, China)

C.W.Tsang(Department of Applied Biology and Chemical Technology, the Hong Kong Polytechnic University, Hung Hom, Hong Kong, China) 

期 刊： 环境科学学报(英文版)  ISTICSCI   Journal： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2004, 16(2)  分类号： X131.1 X513  Keywords： TSP    PM10    trace elements    enhancement factor    element ratios    seasonal variation    factor analysis   

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