FRACTIONATION OF HEAVY METALS IN SOIL OF INDUSTRIAL AREA OF MYSORE CITY, INDIA

The Metals are considered as most important toxic pollutants in the ecosystem. Metals are continuously released into the biosphere by natural processes like volcanoes, weathering of rocks and also by various anthropogenic activities, such as mining, combustion of fuels, industrial and urban sewage and agricultural practices. On a global scale there is evident that, through the anthropogenic activities surrounding environment has polluted heavy metals. Once metals were entered into the environment it goes on accumulation with the natural process. However, in general aspects it is very difficult to eliminate the metals from the environment. Traditional treatments for metal contamination in soils are expensive and cost prohibitive when large areas of soil are contaminated. In this present study the heavy metal pollution in industrial area of Mysore city has been taken and also heavy metal speciation, as well as abiotic and biotic factors affecting their bioavailability of heavy metal pollution was studied. The geochemical behavior of heavy metals was analyzed through speciation studies. The studies show that the heavy metals mobility is less in the Exchangeable metal fraction and Carbonate bound metal fractions. But in the Fe– Mn oxide metal fraction and Organic and sulfide metal fractions mobility of the metals is comparatively little higher than the other fraction. The final residual metal fraction has the non-mobile phase of the heavy metals. In this study period, the industrial surrounding area soil has become polluted and lost their natural fertility with the addition of some heavy metals by several processes taken up by the industries.