PIXE characterization of PM10 and PM2.5 particulate matter collected during the winter season in Shanghai city
| Autor: | Zhang Yuanxun, Wang Yingsong, Li Delu, Zhang Yuanmao |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Pollution
Meteorology business.industry Health Toxicology and Mutagenesis media_common.quotation_subject Public Health Environmental and Occupational Health Air pollution Particulates medicine.disease_cause complex mixtures Analytical Chemistry Aerosol Nuclear Energy and Engineering Environmental chemistry medicine Particle Environmental science Radiology Nuclear Medicine and imaging Coal Winter season Enrichment factor business Spectroscopy media_common |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 267:497-499 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | The samples of PM2.5 and PM10 inhalable particulate matter had been collected during the period of December 2002 –January 2003 at nineteen representative sites of Shanghai urban and suburb area in order to investigate the chemical characterization of aerosol particle in winter. The samples were analyzed to determine the average concentrations for up to twenty elements by means of particle induced X -ray emission (PIXE). It wa s found that the average elemental concentrations in the urban center are higher than those in the suburb, except for Ti and P. The particulate mass data demonstrate that th e ratio range of PM2.5/PM10 is from 0.32 to 0.85 and its average ratio is 0.6. The result of the enrichment factor shows that the inhalable particles may be divided into two categories, i.e. , soil elements from the earth crust and anthropogenic pollution e lements. It is noticed that toxic or harmful elements such as S, As, Pb, Ni, Mn and Se are enriched mainly in fine particles with diameter less than 2.5 μm. The fingerprints of major pollution sources such as coal (or oil) burning, vehicle exhaust emission and industry are also presented and discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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