• Dr. Neelu Jain
• Neelam Arora

Heavy metal has toxicity proven to be major threat and there is several healths’ problem with it. Heavy metals are natural elements characterized by their rather high atomic mass and their high density. Heavy metal accruing in low concentration. They can found all through the crust of our planet. Commonly a density of at least 5 times higher than of water. Heavy metals require an atomic mass higher than 23 or an atomic number exceeding 20. Their plentiful domestic, industrial, agricultural and technological usages have led to their widespread distribution in the environment. The toxic effect of these metals even though they do not have any biological role remain present in some or the other form harmful for the human body and its proper functioning. Heavy metals are well known environmental pollutants due to their toxicity, persistence in the environment and bioaccumulation nature. Their natural source includes weathering of metal, bearing of rocks and volcanic eruption. While anthropogenic sources include mining and various industrial and agricultural activities. Mining and industrial processing for extract ion of minerals resources and their subsequent application for industrial, agriculture and economic development has led to increase in the mobilization of the elements in the environment and disturbance of their biochemical cycles.

Heavy metal, Heavy metal, biological role, high atomic mass,natural elements,

"PHYSICO-CHEMICAL ANALYSIS OF HEAVY METALS AND ITS EFFECT ON HUMAN HEALTH", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.863-867, June 2019, Available :http://www.jetir.org/papers/JETIR1907266.pdf

"PHYSICO-CHEMICAL ANALYSIS OF HEAVY METALS AND ITS EFFECT ON HUMAN HEALTH", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp863-867, June 2019, Available at : http://www.jetir.org/papers/JETIR1907266.pdf