Chemical Speciation and Potential Mobility of Heavy Metals in Organic Matter Amended Soil

Organic matter (OM) degradation from amendments used in the remediation of metal-contaminated soils leads to modifications soil chemical properties immediately after addition, which can also affect metal distribution. Therefore, speciation and potential mobility heavy metals e.g., lead (Pb) cadmium (Cd) were evaluated three amended with OM. Soils, both spiked (with nitrate solution) unspiked, treated OM at a rate 5 tons/ha moist condition. The samples incubation for 30 days 30% A fractionation procedure was applied determine distribution Pb Cd soils. determined. Metals transformed mobile immobile fractions unspiked (not organic matter), but increased fraction decreased it soil. In contrast, OM), (as percentage total) higher than indicating greater compared Pb. However, showed more or less similar pattern transforming since their characteristics almost same.