THE MONITORING AND RISK ASSESSMENT OF Zn DEPOSITION AROUND A METAL SMELTER IN LATVIA

摘要

Heavy metal concentrations in Hylocomium splendens collected around a metal smelter in Lativa showed very high concentrations of Zn (>200 μg/g), and elevated concentrations of Pb (38.3 μg/g) and Cu (18.3 μg/g). In an attempt to better evaluatte the potential toxicity of the high Zn concentrations. a serial elution method was used to determine the concentrtions of zine in intercellular, extracellular exchangeable cell wall, intracellular, and particle fractions. The intercellular Zn concentrations represent the water soluble component of the total concentrations, and were low with no clea4r trends.