Different chemical properties of lead in atmospheric particles from urban roadside and residential areas

Developmental Biology

Toshiki Tojo¹  Satoshi Kaneco²  Kunihiro Funasaka¹  Masaki Takaoka³ 

[1] Osaka City Institute of Public Health and Environmental Sciences, 8–34 Tojo–cho, Tennoji, Osaka 543–0026, Japan$$;Department of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya, Tsu, Mie 514–8507, Japan$$;Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto daigaku–Katsura, Nishikyo–ku, Kyoto 615–8530, Japan$$

关键词: Lead;    atmospheric particles;    fractionation;    road dust;    XANES;   

DOI  :  10.5094/APR.2013.041

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

Lead in atmospheric suspended particles was fractionized using simple acid extraction to assess differences in chemical properties of lead from roadside and residential areas. The Pb–LIII edge XANES measurement was also challenged to explore the possibilities of contamination from road dust into the air. Results suggest that 0.1 M–HCl extractable fractions of lead at the roadside area are significantly higher than those obtained at the residential area, especially for the coarse mode of the particulate samples. Moreover, the solubility characteristics of the roadside particulate lead have partially overlapped with those of the road dust samples. The XANES spectra for coarse mode of particulate lead also nearly correspond to that of the road dust collected around the roadside area. These results indicate effects by the re–suspension of road dust to the roadside air. However, it is difficult to clear the roadside contamination from specific lead material applied in this study. This might suggest that specific lead compounds do not exist exclusively in atmospheric particles but exist as mixtures or unknown complexes.

【 授权许可】

Unknown   

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