D59;G10 标准查询与下载

KS M ISO 4280:2003 工业用天然及人造冰晶石和氟化铝.硫酸盐含量的测定.硫酸钡重量法

이 규격은 산업용 플루오르화 알루미늄 및 천연ㆍ인조 크라이올라이트 중의 황산염 함량을

Cryolite, natural and artificial, and aluminium fluoride for industrial use－Determination of sulphate content－Barium sulphate gravimetric method

KS M ISO 6374:2003 工业用天然及人造冰晶石和氟化铝.磷含量的测定.萃取后原子吸收分光谱法

이 규격은 산업용 천연ㆍ인조 크라이올라이트 및 플루오르화 알루미늄 중의 인 함량 측정

Cryolite, natural and artificial, and aluminium fluoride for industrial use－Determination of phosphorus content－Atomic absorption spectrometric method after extraction

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

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.

Cryolite, natural and artificial, and aluminium fluoride for industrial use; Determination of phosphorus content; Atomic absorption spectrometric method after extraction

ISO 4280:1977 工业用天然及人造冰晶石和氟化铝 硫酸盐含量的测定 硫酸钡重量法

Applicable to products having a content, expressed as sulphur trioxide, equal to or more than 0.1 % (m/m). Bases on alkaline fusion of a test portion with a mixture of sodium carbonate and boric acid. Extraction of the fused mass with perchloric acid solution and precipitation of the sulphate ions with barium chloride in an acidified medium. Filtration on a fine-texture, ashless filter paper (pore diameter approximately 0.4 to 1.0 m). Calcination after drying in an electric oven at (850 20) 鳦. Weighing of the residue.

Cryolite, natural and artificial, and aluminium fluoride for industrial use; Determination of sulphate content; Barium sulphate gravimetric method