Soils contaminated with zinc from mining, refining, or fertilizing with zinc-bearing sludge can contain numerous grams of zinc for each kilogram of dry soil. Levels of zinc in excess of five hundred ppm in soil interfere with the ability of vegetation to soak up other important metals, for instance iron https://trevorblrxc.eedblog.com/26782092/an-unbiased-view-of-zinc-sulfide