Soils contaminated with zinc from mining, refining, or fertilizing with zinc-bearing sludge can incorporate various grams of zinc per kilogram of dry soil. Levels of zinc in excessive of 500 ppm in soil interfere with the ability of vegetation to soak up other important metals, which include iron and manganese. https://zincsulfide07383.dgbloggers.com/27185400/the-best-side-of-infrared-zinc-sulfide