Abstract
In a pot experiment, Ordinary chernozem, artificially contaminated with Zn and Pb salts, was ameliorated by addition of chalk and glauconite. The fractional and group composition of metal compounds in soil extracts were determined by combined fractionation to reveal the increase in the environmental hazard when the soils were contaminated—and a decrease when ameliorants were applied. Both strongly and loosely fixed metal fractions are involved in the mobility of heavy metals in soils. From these data, mobility coefficients (MCs) of the heavy metals in the soils and the stability coefficients (SCs) of the soils in respect of heavy metals were calculated. MC characterizes the environmental vulnerability of soils to the impact of heavy metals: SC characterizes the environmental sustainability of soils in respect of heavy metal contamination.
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