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| Trace element concentrations and distribution of atmospheric fine particles in the summer-fall in Shenyang |
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Abstract A study was carried out on trace element concentration and distribution of atmospheric aerosols (PM1) from 21, August to 6, September, 2007 in Shenyang. Concentrations of 50 trace elements determined by collected samples were analyzed by inductively coupled plasma mass spectrometry (ICP-MS, Thermo-Elemental Corp). Based on an analysis of enrichment factors and empirical orthogonal function, the elemental compositions and sources of fine particles were discussed in this work. PM1 concentration in late summer and early autumn was much lower than that in winter. Influenced by different pollution sources in each sampling area, the pollution level of PM1 in different regions reduced progressively from Tiexi industrial region, commercial and residential region in meteorological bureau, main traffic region in institute of atmospheric environment and to Qipan Mountain scenic spots. Analysis of Enrichment factors and empirical orthogonal function suggests that anthropogenic sources including automobile emissions, smelting restaurant, suspension of street dusts and chemical industry all played important roles besides natural emission sources during this period.
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Received: 13 January 2010
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