... Thanh phan Canxi HCO 3- NO3 SO4 2- Na-glutamat PO4&apos ;- Mg^^ Nong do (M) 1,0.1 0-& apos; 2,4.1 0-& apos; 3,0.10' 5,2.10' 1,2.10' 6,0.1 0-& apos; 6,0.1 0-& apos; Bang 2. Phuong ... su nhidm asen trong nude ngam khu vue Ha Ngi [4]. Ve ea che ciia su giai phdng asen ra nude ngam, mot so tac gia da dua ra cac gia thuyet nhu su oxi hda eae khoang asenopyrit ed trong cac ... + H2O Fe(0H)2 + 2CO2 = Fe^" + 2HCO 3- ,2+ , c 2- Fe'^ + S&apos ;- = FeS '2 + ~r" — 1 c -r LYiii -r ^n.2 Fe^^ -I- Mn02 + 4W = Fe^^ + Mn^^ + 2H,0 Fe^^...