ISO 2164-1975 豆科作物 苷氢氰酸的测定

标准号：ISO 2164-1975
中文标准名称：豆科作物 苷氢氰酸的测定
英文标准名称：Pulses; Determination of glycosidic hydrocyanic acid
标准类型：B20
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：B20
国际标准分类号：67.060
适用范围：The method consists in steam distillation of the acid liberated after enzymatic or acid hydrolysis of the glycosides, followed by determination of the quantity of acid obtained, either by direct titration in the distillate with silver nitrate solution in an ammoniacal medium and in the presence of potassium iodide, or by back titration of an excess of silver nitrate solution with ammonium thiocyanate solution, in a suffiently diluted nitric acid medium and in the presence of iron(III) ions. An annex describes a determination by the mercurimetric method.