3,5-二溴-PADAP-酒石酸光度法测定铌

Determination of Nb with Photometric Method of 3, 5-Dibromo-PADAP-Tar

摘要: 基于铌与3,5-二溴-PADAP酒石酸在pH=1.0~4.0时可形成蓝紫色的三元络合物的原理,借助分光光度法测定了低合金钢等样品中微量铌。实验结果与其它方法对比分析证明,结果相符。但该方法更实用、经济。

Abstract: The contents of trace Nb in low alloy steels have been determined by using photometric method of a complex compound derived from the reaction between Nb and 3, 5-dibromo -PADAP-tar in the range of pH 1.0~4.0. The experimental results show that it is more accuracy and reliable comparing with other testing methods.