Sequential Fractionation and Chemical Speciation of Cd, Zn, Cu and Pb in the Soils from Two Shooting Ranges in Gyeonggi Province, Korea(<Special Issue>International Symposium: Challenges to Soil Degradation Towards Sustaining Life and Environment, Tokyo Metropolitan University Symposium Series No.2, 2009)

抄録

Trace element contamination of the soils at shooting ranges has become a major environmental concern in the Republic of Korea. This study was carried out to find out the distribution, fraction and species of Cd, Cu, Pb and Zn in soils from two artillery ranges, AA and BB, in Gyeonggi Province in Korea to ascertain the level of heavy metal contamination at these sites. Eight soil samples from each shooting range were selected based on the 0.1N HCl extractable portion of Cd (for AA) and Cu (for BB). Levels of Cd, Cu, Pb and Zn in the soil samples were analyzed for total as well as 0.1N HCl extractable contents. The Cd content of the soils from the range AA, determined by sequential fractionation was distributed in the order of sulfide/residue>carbonate>organically bound>exchangeable&cong;adsorbed&cong;water soluble, whereas from the range BB, the distribution was carbonate>sulfide/residue>adsorbed>organically bound>water soluble&cong;exchangeable. Chemical speciation analysis of the soil samples showed that trace elements were distributed as various species depending upon soil pH.