Heavy Metal (Heavy metal) refers to the metal element with a density greater than 5 grams per cubic centimeter, such as mercury, lead, cadmium, chromium, copper, zinc, manganese and heavy metals such as new ASEM is an element naturally present in the environment. Currently, contamination from heavy metals is a worrisome problem since. The volume has increased steadily in the air, soil and water, heavy metals, such as copper, manganese and zinc, which are essential for plants and animals. But the amount is not much , if excessive amounts of it can be toxic to plants and animals. The source of heavy metals are sourced both from own way. And human activity is accelerating. The rate of spread into the environment faster. And transmitted to the food chain. Accumulate in living organisms And brings to the human impact is significant.
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