ISO 11433:1993 镍合金.钛含量的测定.二安替比林基低甲烷分子吸收光谱法

标准编号：ISO 11433:1993

中文名称：镍合金.钛含量的测定.二安替比林基低甲烷分子吸收光谱法

英文名称：Nickel alloys — Determination of titanium content — Diantipyrylmethane molecular absorption spectrometric method

发布日期：1993-09

标准范围

规定方法的原理是将供试品溶解在盐酸和硝酸中，在硫酸存在下蒸发成烟雾，去除盐酸和硝酸，形成二安替比林甲烷钛络合物，在390 nm波长下测量供试品溶液的吸光度。该方法可用于测定0.3%（m/m）至5.0%（m/m）范围内的钛含量。有证据表明，当钛含量降至0.05%（m/m）时，该方法可以扩展；通过修改，可以测定含钨和/或钽的合金中的钛。

The principle of the method specified is dissolving a test portion in hydrochloric and nitric acids, removing hydrochloric acid and nitric acid by evaporation to fumes in the presence of sulfuric acid, forming the titanium diantipyrylmethane complex, measuring the absorbance of the test solution at a wavelength of 390 nm. The method may be used to determine titanium contents in the range of 0,3 % (m/m) to 5,0 % (m/m). Evidence exists that extension of this method is possible for titanium contents down to 0,05 % (m/m); modifications allow to determine titanium in alloys containing tungsten and/or tantalum.

标准预览图