Differences in Lead Bioavailability Between a Smelting and a Mining Area.

Autor: Rieuwerts, John S., Farago, Margaret E., Cikrt, Miroslav, Bencko, Vladimir
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Zdroj: Water, Air & Soil Pollution; Aug2000, Vol. 122 Issue 1-2, p203-229, 27p
Abstrakt: Soils and housedusts were collected from three areas of Pribram, an historic metal mining and smelting town in the Czech Republic. The main objectives of the study were: (i) to assess the influence of physico-chemical form, particle size, soil properties and contaminant source on Pb bioavailability and exposure risk; (ii) compare the Pb bioavailability data obtained from the mining and smelting areas and assess whether any differences observed could be attributed to the factors thought to exert an influence. Lead concentrations were highest in the smelter area. Mining area garden soils also contained elevated Pb concentrations. Solubility of housedust Pb in 0.12 M HCl (a surrogate for stomach acid) was similar in all study areas and was similar to values reported in the literature. However, 0.12 M HCl solubility of garden soil Pb was low in the mining area compared to the other study areas and compared to other urban areas. Blood Pb concentrations were also relatively low in the mining area compared to the other study areas and the reduced soil Pb solubility observed in this area was suspected as an influencing factor. However, exposure pathways may also be important in explaining the differences observed. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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