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Concentrations and origins of trace elements in the atmospheric total suspended particulates in Qingdao, PRC

Shuai QIU

Abstract


 31 Daily Total suspended particulate (TSP) samples were collected in December. Thirteen trace elements in these samples were analyzed to characterize their concentration. The results showed that total concentration of all trace elements was (7.37±4.19) [XG M 3. Al and Fe were the most abundant elements which contributed approximately 92% To the total concentration, followed by Zn (3.7%) and Pb (1.6%). The remaining nine elements respectively contributed <1% to the total Concentration and they ranked as Mn > Ba > Cu > Sr> as > V > Cd > Co > Cs in a decreasing order. The calculated enrichment Factor values suggested that this thirteen trace elements can be divided into three groups, i.e .,① Al, Fe, Mn, Co, V, Sr and Ba probably From crust sources; ② Cs and Cu as a combination of crust and anthropogenic sources; and <b 20>③ Zn, as, Pb and Cd from anthropogenic sources. The positive matrix factorization (PMF) receptor model is further used to apportion the sources of particulate trace Elem Ents. PMF analysis revealed that Fe and Mn in TSP were mainly derived from soil source, followed by biomass and burning Primary Emission/co is mainly derived from soil source, biomass burning and coal burning/zn is mainly originated from Vehicle primary emission, soil source and biomass burning/cu was mainly derived from metal smelting and as is from coal Burning/and vehicle primary emission and metal smelting were the dominate contributor to Pb and Cd. In the hazy days, the elements from anthropogenic sources were more accumulated than those from crust sources. The trace elements from crust

Keywords


Trace metals! Atmospheric Aerosol/source apportionment/positive Matrix factorization (PMF)/Qingdao

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DOI: http://dx.doi.org/10.18686/jaoe.v1i1.1144

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