钨的催化示波极谱法测定

Determination of Wolfram by Catalytic Ac-Oscillopolarographic Analytical method

本文提出了催化示波极谱法测定微量钨的新方法．研究了W（Ⅵ）催化过氧化氢──甲基橙氧化还原体系，确立了催化体系测定微量钨的工作条件，线性范围为0．05～1．0μg／mL，检测限为0．02μg／mL，相对标准偏差为1．6％．该方法快速、简便，终点直观，用于合金钢平钨的测定，获得满意结果．

A new catalytic Ac-Oscillopoarographic analytical method of microamount of W(VI) was proposed. The method has high sensitivity and selectivity for determining mi-croamount W(VI). The range of detrmination is 0.05～1.0 μg/mL for W (VI). The delection limit is 0.02 μg/mL amd the relative stantard deviation is 1.6%. This method is satisfactorily ap-plied to determination of wolfram in steel.