ISO/TR 7955:1982 铌铁.铌含量的测定.重量分析法

标准编号：ISO/TR 7955:1982

中文名称：铌铁.铌含量的测定.重量分析法

英文名称：Ferroniobium — Determination of niobium content — Gravimetric method

发布日期：1982-12

标准范围

规定了测定钛含量的光度法（附录a）、测定钽含量大于1%（m/m）的重量法（附录B）和测定钽含量小于1%（m/m）的光度法（附录C）。本方法适用于铌含量在40%至75%（m/m）之间、钽含量在0.25%至8.0%（m/m）之间以及钛含量在0.05%至5.0%（m/m）之间的铌铁。如果存在铋或三价锑，可能会产生干扰。

Specifies a photometric method for the determination of the titanium content (annex A), a gravimetric method for the determination of tantalum contents greater than 1 % (m/m) (annex B) and a photometric method for the determination of tantalum contents less than 1 % (m/m) (annex C). The methods are applicable to ferroniobium having niobium contents between 40 and 75 % (m/m), tantalum contents between 0,25 and 8,0 % (m/m) and titanium contents between 0,05 and 5,0 % (m/m). Interference may arise if bismuth or trivalent antimony are present.

标准预览图