钨与钼在自然界中常以相互共生状态存在.由于这两元素的原子内最外层及次外层电子层结构完全相同,因此化学性质十分类似,在钼的分析上也就常常由于钨的干扰而引起很多的麻烦.特别是纯钨中微量钼的测定,迄今尚未找到简捷而精密度较高的方法.微量钼通常以比色法测定的较多,其中应用得最广的是硫氰酸盐法和甲苯二硫酚法,大多需经分离之后再行测定.Grimaldi和Wells找出了大量钨共存时微量钼的比 Tungsten and molybdenum often exist in mutual symbiosis with each other in nature. Since the electronic structures of the outermost and the sub-outer layers of the two elements are completely the same, the chemical properties are very similar. In the analysis of molybdenum, the interference of tungsten And cause a lot of trouble.Especially pure tungsten in the determination of trace amounts of molybdenum, so far have not found a simple and high precision method.Micro-molybdenum is usually more determined by colorimetric method, of which the most widely used is thiocyanate Salt method and toluene dithiophenol method, most of them need to be separated after the determination.Grimaldi and Wells found a lot of tungsten coexistence of trace molybdenum ratio