Metal and metalloid contamination in roadside soil and wild rats around a Pb-Zn mine in Kabwe, Zambia

Environ Pollut. 2011 Jan;159(1):175-181. doi: 10.1016/j.envpol.2010.09.007. Epub 2010 Oct 23.

Abstract

Metal (Cr, Co, Cu, Zn, Cd, Pb, Ni) and metalloid (As) accumulation was studied in roadside soil and wild rat (Rattus sp.) samples from near a Pb-Zn mine (Kabwe, Zambia) and the capital city of Zambia (Lusaka). The concentrations of the seven metals and As in the soil samples and Pb in the rat tissue samples were quantified using atomic absorption spectroscopy. The concentrations of Pb, Zn, Cu, Cd, and As in Kabwe soil were much higher than benchmark values. Geographic Information System analysis indicated the source of metal pollution was mining and smelting activity. Interestingly, the area south of the mine was more highly contaminated even though the prevailing wind flow was westward. Wild rats from Kabwe had much higher tissue concentrations of Pb than those from Lusaka. Their body weight and renal Pb levels were negatively correlated, which suggests that mining activity might affect terrestrial animals in Kabwe.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Chromium / analysis
  • Chromium / metabolism
  • Cobalt / analysis
  • Cobalt / metabolism
  • Copper / analysis
  • Copper / metabolism
  • Environmental Monitoring
  • Lead / analysis
  • Lead / metabolism
  • Metalloids / analysis*
  • Metalloids / metabolism*
  • Metals, Heavy / analysis*
  • Metals, Heavy / metabolism*
  • Mining*
  • Nickel / analysis
  • Nickel / metabolism
  • Rats
  • Soil Pollutants / analysis*
  • Soil Pollutants / metabolism*
  • Zambia

Substances

  • Metalloids
  • Metals, Heavy
  • Soil Pollutants
  • Chromium
  • Lead
  • Cobalt
  • Copper
  • Nickel