ISO 11433-1993 镍合金 钛含量的测定 二安替吡啉甲烷分子吸收光谱法

标准号：ISO 11433-1993
中文标准名称：镍合金 钛含量的测定 二安替吡啉甲烷分子吸收光谱法
英文标准名称：Nickel alloys; determination of titanium content; diantipyrylmethane molecular absorption spectrometric method
标准类型：H13
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：H13
国际标准分类号：77.120.40
适用范围：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.