Methods for chemical analysis of tantalum and niobium—Part 7:Determination of phospherus content in niobium—4-Formyloxy-pentyl ketone-[2]extraction separation phosphomolybdate blue spectrophotometry and inductively coupled plasma atomic emission spectrometry
全国有色金属标准化技术委员会(SAC/TC 243)
GB/T 15076的本部分规定了铌中磷含量的测定方法。
本部分适用于铌及氢氧化铌、碳化铌中磷含量的测定。方法一4-甲基-戊酮-［2］萃取分离磷钼蓝分光光度法测定范围：0.001 0%～0.050%；方法二 电感耦合等离子体原子发射光谱法测定范围：0.001 0%～0.080%。当方法一与方法二的测定范围重叠时,方法一为仲裁分析方法。
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