钨的极谱波研究及钼精矿中钨的测定
来源期刊：中南大学学报(自然科学版)1996年第6期
论文作者：刘国根 黄宋献 邱冠周 胡岳华
文章页码：738 - 742
关键词：钨; 示波极谱法; 钼精矿
Key words：tungsten; oscilloscopic polarograhy; molybdenum concentrate
摘 要：在pH2.3的磷酸－1.18×10-5mol/L桑色素底液中,钨在－1.14V(vs.SCE)有一灵敏的极谱波,可用于微量钨的测定.线性范围4.35×10-10～2.18×10－8mol/L,检出限4.14×10－11mol/L.直接应用于钼精矿中钨的测定,方法简便快速,结果准确.
Abstract: A new polarographic system for determination of tungsten is presented in this paper.The best constitutent of a solution of H3PO4 (pH=2.3)-1.18 ×10-5 mol/L morin was used as a supporting electrolyte. The electric potential of peak was found to be-1.14 V(vs. SCE).The calibration curve for tungsten is linear in the range of 4.35×10-10～2. 18 ×10-8 mol/L,with a detection limit of 4.14 ×10-11 mol/L. This method is simple, rapid and accurate, and has been directly applied to determination of trace amounts of tungsten in molybdenum concentrate.
