Arsenic,antimony and bismuth in soil and pasture herbage in some old metalliferous mining areas in England |
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Authors: | Xiangdong Li Iain Thornton |
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Institution: | (1) Environmental Geochemistry Research, Centre for Environmental Technology, Royal School of Mines, Imperial College, SW7 2BP London, UK |
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Abstract: | Soil and pasture herbage samples from some historical metalliferous mining and smelting areas in England were analysed for
As, Sb and Bi by ICP-AES using a hydride generation method after ashing with Mg(NO3)2. The results showed that As, Sb and Bi concentrations in soils were elevated because of their associations with the Pb-Zn
mineralisation in Derbyshire and Somerset, and Sn-Cu mineralisation in Cornwall. The distribution of As, Sb and Bi in soils
reflected the chemical nature of different mine waste materials, and on a regional basis clearly reflected the geochemistry
of the three mineral provinces. Historical smelting and calcination have caused intensive contamination in soils in the immediate
vicinity of these activities. Antimony was highly elevated in soils at an old Pb smelter site in Derbyshire. Although the
concentrations of As, Sb and Bi were generally low in the pasture herbage samples examined, the concentrations of As and Sb
in herbage often reflected those of the corresponding soils. Soil pH had a large effect on the plant uptake of Bi from soils.
The pasture herbage contaminated by soil can be an important exposure pathway of these elements to livestock grazing on contaminated
land. |
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Keywords: | |
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