标准摘要
[中文适用范围]： 本文件规定了测定镍、镍铁和镍合金中 0.0005%（质量）至 0.05%（质量）磷含量的分光光度法。 砷、铬、铪、铌、硅、钽、钛和钨会产生干扰，但可以通过络合或挥发（对于铬）来避免干扰。 只有这些干扰元素含量较低的样品才能达到最低的磷含量 [0.0005%（质量）]。 [外文原描述]： This document specifies a spectrophotometric method for the determination of the phosphorus content in nickel, ferronickels and nickel alloys between 0,000 5 % (by mass) and 0,05 % (by mass). Arsenic, chromium, hafnium, niobium, silicon, tantalum, titanium and tungsten interfere, but the interferences can be avoided by complexation or volatilization (for chromium). The lowest phosphorus content [0,000 5 % (by mass)] can only be reached in samples with low contents of these interfering elements.
英文名称Nickel, ferronickels and nickel alloys — Determination of phosphorus content — Phosphovanadomolybdate spectrophotometric method