Accumulation of Heavy Metals in Agricultural Soil Sample in Viswanatham, Sivakasi

摘要

Soil heavy metals are very useful indicator of improving environmental quality worldwide. The present study was conducted to investigate the levels of heavy metals present in agricultural soils. seven heavy metals were screened (Mn, Zn, Ni, Pb, Cu, Cr and Cd) such as manganese 15.5472 ppm Zinc-1.2411 ppm Nickel- 0.1371 ppm, lead-0.1370 ppm copper 0.0584 ppm, chromium- 0.0270 ppm and cadmium 0.0068 ppm by Atomic Absorption Spectroscopy. Generally, the distribution of these metals is influenced by the nature of parent materials, climate and their relative mobility depending on soil parameter, such as mineralogy, texture and classification of soil. Exposure to heavy metals is normally chronic due to food chain transfer and excess heavy metal accumulation in soils is toxic to humans and other animals.