types of electrical (battery, acquy) has high levels of heavy metal waste: 93% of the total amount, about 45% of the amount of Cadmium (Cd). the scrap Iron contains about 40% of the amount of lead (Pb), 30% copper (Cu), 10% chromium (Cr). The smooth waste (< 20 mm) contains 43% Cu, 20% Pb and 12% nickel (Ni). 38% 25% Ni and Cd is plastic. Nickel are in the kind of junk components, including 6 types of spam contains above 10% Ni.People see that, the dust flying in the air and the dust settle in urban areas certainly contain more risk there are many potentially toxic metal dust in rural areas. Thus the population lived in urban areas suffered much potential risk of heavy metals than the people living in the countryside.According to this cause, the land in Vietnam, in general have affected both: degeneration and contamination.
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