Decolorization on Freezing of Ferricyanide-Cyanide Solution used for Hemoglobin Determinations

[摘要] When Drabkin's solution (used for the determination of hemoglobin), which contains K3Fe(CN)6, KCN, and NaHCO3, is frozen, it loses its greenish-yellow color. The solution remains colorless even after thawing. The reaction, for which there is no satisfactory explanation, involves the reduction of the K3Fe(CN)6 to K4Fe(CN)6, with KCN being oxidized to KCNO.

[学科分类] 过敏症与临床免疫学