ISO 900:1977 主要用于制铝的氧化铝.钛含量的测定.二安替比林基代甲烷光度法

标准编号：ISO 900:1977

中文名称：主要用于制铝的氧化铝.钛含量的测定.二安替比林基代甲烷光度法

英文名称：Aluminium oxide primarily used for the production of aluminium — Determination of titanium content — Diantipyrylmethane photometric method

发布日期：1977-10

标准范围

适用于二氧化钛含量等于或大于0.001%（m/m）的所有产品。描述了二安替比林甲烷溶液和钛标准溶液的制备。主溶液的制备或碱熔化学分析程序按照ISO 804进行，用硫酸溶液代替硝酸溶液。用硫酸溶液萃取熔融物后，形成二安替比林甲烷钛络合物（约4.6 N溶液）。在约420 nm波长下对有色络合物进行光度测量。也得到了IUPAC的批准。替换并取消ISO建议R 900/1968，该建议构成了技术修订版。

Applicable to all products having a titanium dioxide content of equal to or more than 0.001 % (m/m). Describes the preparation of the diantipyrylmethane solution and the preparation of the titanum standard solution. The procedure of the preparation of a principal solution or the chemical analysis by an alkaline fusion is carried out according to ISO 804 replacing the nitric acid solution by the sulphuric one. After extraction of the fused mass with sulphuric acid solution formation of the titanium-diantipyrylmethane complex (approximately 4.6 N solution). Photometric measurement of the coloured complex at a wavelength of about 420 nm. Has also been approved by the IUPAC. Replaces and cancels ISO Recommendation R 900/1968 of which it constitutes a technical revision.

标准预览图