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在醋酸钠—柠檬酸钠缓冲溶液中,钴与亚硝基 R 盐形成可溶性红色络合物,籍以比色测定。采用加入混合缓冲溶液及工作曲线中加纯镍的方法,120毫克镍不
Cobalt and nitroso R salts form soluble red complexes in sodium acetate-sodium citrate buffer solutions and are subjected to colorimetric determination. By adding mixed buffer solution and working curve plus pure nickel method, 120 mg of nickel is not