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钨的测定,通常是采用借一些生物硷作沉淀剂的重量法进行。至目前为止,对钨的容量法测定还是研究的很不够,例如,以钨酸的酸性为基础的酸量法与还原钨成低价,然后以高锰酸钾滴定的一些方法,是不够准确的[1];与所提出的氯化亚铬电位法[2]测定钨,可以得到准确的结果,高小霞等[3]亦曾研究了以氯化亚铬电位滴定法测定钨精矿同钼精矿中的钨、钼,并得到了好的结果。但是,由于需要一些特殊设备,使该法的普遍采用受到了限制。测定钨的间接容量法中,近年
Determination of tungsten, usually by using some biological base as a precipitating agent gravimetric method. Till now, there is not enough research on the determination of the volumetric capacity of tungsten. For example, some methods based on the acidity of tungstic acid and the method of reducing tungsten to lower prices and then titration with potassium permanganate are not accurate enough [1]; and the proposed chromium chloride potential method [2] Determination of tungsten, can get accurate results, such as Xiaoxia Xia [3] have also studied the chromium chloride potentiometric titration with tungsten concentrate with molybdenum Concentrates of tungsten, molybdenum, and get good results. However, the widespread adoption of the law has been limited by the need for special equipment. Determination of indirect capacity of tungsten method, in recent years