摘要
研究了用硝酸(1+2)和氢氟酸混合溶解样品,用硫氰酸钾差示光度法测定钨铜合金中钨的方法。用氢氧化钠溶解钨酸,加入三氯化铝溶液,从而消除了铜和氟对分析钨的干扰,测定方法与辛可宁重量法测定钨的结果一致,相对标准偏差(RSD,n=8)为0.20%～0.24%。
The method of dissolving sample by nitric a potassium thiocyanate differential spectrophotometric cid （1 ＋ 2） and hydrofluoric acid hybrid and using determinating tungsten in tungsten copper alloy was researched. With sodium hydroxide dissolving tungsten acid, and adding three aluminium chloride solution to eliminate the interference to copper and fluoride on the analysis of tungsten, the results of this measuring method and cinchonine weight method used for determination of tungsten are consistent , the relative standard deviation （RSD, n = 8） is 0.20% - 0.24%.
出处
《有色矿冶》
2013年第2期54-55,58,共3页
Non-Ferrous Mining and Metallurgy
关键词
钨
钨铜合金
硫氰酸钾
差示光度法
tungsten
tungsten-- copper alloy
potassium thiocyanate ： differential spectrophotometry
