ISO 11400-1992 镍、镍铁和镍合金 磷含量的测定 二氧磷钒钼分子吸收光谱法

标准号：ISO 11400-1992
中文标准名称：镍、镍铁和镍合金 磷含量的测定 二氧磷钒钼分子吸收光谱法
英文标准名称：Nickel, ferronickel and nickel alloys; determination of phosphorus content; phosphovanadomolybdate molecular absorption spectrometric method
标准类型：H62
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：H62
国际标准分类号：77.120.40
适用范围：Phosphorus content can be determined in the range of 0,000 5 % (m/m) to 0,05 % (m/m). As, Cr, Hf, Nb, Si, Ta, Ti, W interfere, but the interferences can be avoided. The principle is dissolution of a test portion in a mixture of nitric and hydrochloric acids, fuming with perchloric acid, removal of chromium, complexation of silicon, conversion of phosphorus to phosphovanadomolybdic acid, extraction of this compound.