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电导法是测定钨钼产品中微量硫的有效方法之一。本方法采用管式炉高温燃烧,析出的二氧化硫用碘液吸收,电导法测定之。我们的工作是在资料(1)(2)的基础上对钨、钼氧化物的高温升华和硫的析出问题进行了探讨,拟定了燃烧——电导法测定钨粉、钼粉及其氧化物中硫的方法。方法灵敏度为1×10～(-4)％,含量为0.01-0.001％的方法误差为±5.2％-±23％。
Conductivity method is one of the effective methods for the determination of trace sulfur in tungsten and molybdenum products. This method uses tube furnace combustion, the precipitation of sulfur dioxide with iodine absorption, conductivity measurement. Our work is based on the information (1) (2) on the basis of tungsten, molybdenum oxide high temperature sublimation and sulfur precipitation problems were discussed, developed a combustion - conductivity method for the determination of tungsten powder, molybdenum powder and its oxide The method of sulfur. The sensitivity of the method was 1 × 10 ~ (-4)% and the method error of ± 0.01% ~ 0.001% was ± 5.2% ± 23%.