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E-mail: renhr. Contamination levels were evaluated using the geoaccumulation index and the enrichment factor. Human health risks for each heavy metal element were assessed using a human exposure model. Results showed that the dust contained significantly elevated heavy metal elements concentrations compared with the background soil. The spatial distribution pattern of all tested metals except for As coincided with the locations of industrial areas while the spatial distribution of As was associated with domestic sources.
The non-cancer health risk assessment showed that ingestion was the primary exposure route for all metals in the road dust and that Mn, Cr, Pb, and As were the main contributors to non-cancer risks in both children and adults. The cancer risk assessment showed that Cr was the main contributor, with cancer risks which were orders of magnitude higher than those for other metals. Taken in concert, the non-cancer risks posed by all studied heavy metal elements and the cancer risks posed by As, Co, Cr, Cd, and Ni to both children and adults in Bayan Obo Mining Region fell within the acceptable range.
Key words: road dust, heavy metal elements, contamination assessment, health risk assessment, Bayan Obo Mining Region. Journal of Geographical Sciences, , 25 12 : The Igeo value of heavy metals in road dust in Bayan Obo April ". Non-carcinogenic risk distribution of different exposure ways for children and adults in Bayan Obo April ".
The average Igeo values of heavy metals in road dust in different areas". HIs for each non-carcinogenic metal in road dust collected in Bayan Obo April ". Cancer risks for each carcinogenic metal in road dust collected in Bayan Obo April ". RichHTML 0. PDF PC Knowledge 0. Cited Key words: road dust, heavy metal elements, contamination assessment, health risk assessment, Bayan Obo Mining Region Cite this article. Inner Mongolia B. Figure 4 Non-carcinogenic risk distribution of different exposure ways for children and adults in Bayan Obo April ".
References Distribution of heavy metals in road dust along an urban-rural gradient in Massachusetts. Atmospheric Environment, 45 13 : Journal of Asian Earth Sciences, Health effects of natural dust.