ISO 5314-1981 肥料 氨态氮量的测定 蒸馏后滴定法

标准号：ISO 5314-1981
中文标准名称：肥料 氨态氮量的测定 蒸馏后滴定法
英文标准名称：Fertilizers; Determination of ammoniacal nitrogen content; Titrimetric method after distillation
标准类型：G20
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：G20
国际标准分类号：65.080
适用范围：The method consists in distilling of the ammonia from an alkaline solution, absorbing in an excess of standard volumetric sulphuric acid solution and back-titrating with standard volumetric sodium hydroxide solution. It is applicable only in the absence of urea or its derivatives, of cyanamide and of organic nitrogenous compounds.