Soils contaminated with zinc from mining, refining, or fertilizing with zinc-bearing sludge can incorporate many grams of zinc for every kilogram of dry soil. Amounts of zinc in excess of 500 ppm in soil interfere with the power of vegetation to absorb other essential metals, which include iron and manganese. https://emiliocikjg.therainblog.com/27529362/the-infrared-zinc-sulfide-diaries