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鎢的測定,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,对鎢的容量法測定还是研究的很不够,例如,以鎢酸的酸性为基础的酸量法与还原鎢成低价,然后以高錳酸鉀滴定的一些方法,是不够准确的;与所提出的氯化亚鉻电位法測定鎢,可以得到准确的結果,高小霞等亦曾研究了以氯化亚鉻电位滴定法測定鎢精矿同鉬精矿中的鎢、鉬,並得到了好的結果。但是,由于需要一些特殊設备,使該法的普遍采用受到了限制。測定鎢的間接容量法中,近年來Sausa曾提出过預先用BaCl_2使之成CaWO_4沉淀,然后将CaWO_4溶于酸,以EDTA滴定鈣为基础的容量法。但是,由于碳酸盐的影响而使的这个方
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 ; With the proposed chromium chloride potential method for the determination of tungsten, you can get accurate results, such as Xiaoxia Xia has also been studied with chromium chloride potentiometric titration of tungsten concentrate molybdenum with molybdenum, tungsten, and Get good results. However, the widespread adoption of the law has been limited by the need for special equipment. In the determination of tungsten indirect capacity method, Sausa has proposed in recent years, BaCL_2 pre-made into CaWO_4 precipitation, and then CaWO_4 dissolved in acid, EDTA titration of calcium-based volumetric method. However, this side due to the influence of carbonate