钢铁中微量钼的单扫描极谱测定

Determination of Micro-Amount of Molybdenum in Steel & Iron by single sweep polarography

提出了在 2 0 %H2 SO4- 1 .42 %Na2 SO4- 0 .48%柠檬酸 - 1 .44%氯酸钾底液(pH =1 .6)中进行阳极化单扫描极谱法测定钼的方法。峰电位为 + 0 .1V(VS .SCE) ,线性范围为 0 .40 - 4.0 μg/ml,最低检测浓度为 0 .2 μg/ml。本法干扰少 ,可不经分离直接用于钢铁中钼的测定。

A method for the determination of Molybdenum in a supporting solution of 2.0% sulfuric acid-1.42% sodium sulphate-0.48% citric acid -1.44% potassium chlorate by positive electrode single sweep polarography has been established.The peak potentail is +0.1V(VS.SCE).The peak height is linearly proportional to the concentration of molybdenum over the rang of 0.40-4.0μg/ml.,The defection limit is 0.20μg/ml for molybdenum.This method is simple and sensitive when it is used to analyse steel & iron.