CaCO3 in water at room temp.; natural chalk treated with 0.9 N FeSO4 soln. (solid-to-liquid ratio (g:ml) 100:350; washed with distd. water; treated with 0.1 N K4(Fe(CN)6) soln. (solid-to-liquid ratio (g:ml) 100:750; treated with K2CrO7;
参考文献
Russian Journal of Applied Chemistry, , vol. 75, # 3 p. 339 - 344
in hydrogenchloride Electrochem. Process; equimolar amts. of FeCl3 and ammonium hexacyanoferrate mixing in 0.01 MHCl and electroreducing on a sodium chloride satd. calomel electrode; identified by UV spectrum;
参考文献
Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry (1972-1999), , p. 2059 - 2062
