ISO 7408-1983 肥料 用氢氧化钠处理时,释放氨的物质中氨态氮含量的测定 滴定法

标准号：ISO 7408-1983
中文标准名称：肥料 用氢氧化钠处理时,释放氨的物质中氨态氮含量的测定 滴定法
英文标准名称：Fertilizers; Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide; Titrimetric method
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 entraining, by means of a strong current of air, of the ammonia from a moderately alkaline test mixture at ambient temperature into standard volumetric sulfuric acid solution, and back-titrating of the excess sulfuric acid solution with standard volumetric sodium hydroxide solution.