Heavy metals in particulate and colloidal matter from atmospheric deposition of urban Guangzhou,South China |
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| Authors: | Wen Huang Dandan Duan Yulong Zhang Hefa Cheng Yong Ran |
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| Institution: | 1. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 511 Kehuajie, Tianhe, Guangzhou 510640, China;2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Suspended particulate matter (SPM) and colloidal matter (COM) in annual dry and wet deposition samples in urban Guangzhou were for the first time collected, and their trace metals were investigated by using inductively coupled plasma mass spectrometry (ICP-MS). The deposition flux of SPM and of metal elements varied largely among the investigated seasons, and reached the maximum in spring. The correlation analysis indicated that significant correlations existed among some of the metal elements in the deposition samples. The enrichment factors (EF) of metals in COM in the deposition ranging from 79.66 to 130,000 were much higher than those of SPM ranging from 1.65 to 286.48, indicating the important role of COM. The factor analysis showed that emissions from street dust, non-ferrous metal production, and heavy fuel oil were major sources of the trace metals. Positive matrix factorization (PMF) model was used to quantitatively estimate anthropogenic source. |
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| Keywords: | Suspended particulate matter Colloidal organic matter Source analysis Trace metal Enrichment factors PMF model |
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