ISO 6374-1981 工业用天然及人造冰晶石和氟化铝 磷含量的测定 萃取后原子吸收光谱法

标准号：ISO 6374-1981
中文标准名称：工业用天然及人造冰晶石和氟化铝 磷含量的测定 萃取后原子吸收光谱法
英文标准名称：Cryolite, natural and artificial, and aluminium fluoride for industrial use; Determination of phosphorus content; Atomic absorption spectrometric method after extraction
标准类型：D59;G10
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：D59;G10
国际标准分类号：71.060.20;73.060.40
适用范围：Specifies a method based on the fusion of a test portion with sodium carbonate and boric acid and dissolution in perchloric acid solution, followed by formation of the ammonium molybdophosphate complex and extraction of the complex with isobutyl acetate. The solution is absorbed into an acetylene/dinitrogen monoxide flame and the molybdenum, and hence the phosphorus, is determined by measuring the absorbance of the 379,8 nm line emitted by a molybdenum hollow-cathode lamp.