Anthropogenic Platinum Enrichment in the Vicinity of Mines in the Bushveld Igneous Complex, South Africa
Artikel i vetenskaplig tidskrift, 2013

South Africa is the world's single largest platinum (Pt) producer owing to important resources in the Bushveld Igneous Complex (BIC). Little attention has been paid to the environmental impacts of mining in the region despite the extent of mining activities. Here, we present a study on the occurrence of Pt in the vicinity of mines in the BIC. Elevated concentrations were found at all sampling sites in the mining area. The highest Pt concentration in soil (698+/-178 ng g(-1), <125 mu m) was found at a smelter, while processing plants, shafts and nearby towns had lower concentrations. Elevated Pt concentrations were also found in grass with a maximum of 256+/-122 ng g(-1) at the smelter and a significant correlation between soil and grass concentrations. In comparison, Pt concentrations in soil and grass at a background site were 2.7+/-0.4 and 0.6+/-0.2 ng g(-1), respectively. Laboratory uptake experiments indicate that atmospheric deposition is the main source of Pt in grass. The occurrence of elevated Pt concentrations and its accumulation in vegetation raise concern over exposure of the local population through inhalation, skin exposure or dietary intake.

group elements

au

South Africa

snow samples

Mining

environment

rhodium

northwest russia

Deposition

metals

Grass

Platinum

palladium

Soil

soils

group

Smelter

kola-peninsula

Författare

Sebastien Rauch

Chalmers, Bygg- och miljöteknik, Vatten Miljö Teknik

O. S. Fatoki

Cape Peninsula University of Technology

Water, Air, and Soil Pollution

0049-6979 (ISSN) 1573-2932 (eISSN)

Vol. 224 1 1395

Ämneskategorier

Miljöbioteknik

DOI

10.1007/s11270-012-1395-y