Egli K L
J Assoc Off Anal Chem. 1977 Jul;60(4):954-6.
A simple colorimetric method is described for determining the quantity of hydrogen cyanide produced by the spontaneous decomposition of amygdalin in apricot kernels. The evolved cyanide is collected in sodium hydroxide solution and assayed colorimetrically by reaction with picric acid. Results for duplicate assays, 3.02 and 3.06 mg CN-/g, compare well with those obtained by AOAC method 26.115 which specifies steam distillation and silver nitrate titration; results for triplicate assays were 3.02, 3.03, and 3.08 mg CN-/g by the latter. Recovery of cyanide from potassium cyanide at a level equivalent to 243 microgram CN-/g was 101.0%.
本文描述了一种简单的比色法，用于测定苦杏仁苷在杏仁中自发分解产生的氰化氢量。逸出的氰化物收集在氢氧化钠溶液中，并通过与苦味酸反应进行比色测定。重复测定结果为3.02和3.06 mg CN⁻/g，与AOAC方法26.115（规定蒸汽蒸馏和硝酸银滴定）得到的结果相当；后者的三次重复测定结果分别为3.02、3.03和3.08 mg CN⁻/g。从相当于243微克CN⁻/g水平的氰化钾中回收氰化物的回收率为101.0%。
