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在吐温80存在下,钨与茜素紫生成络合物,PH1—2时,络合物在560nm处有最大吸收,方法灵敏,并具有高的选择性和再现性。本法可应用于钢中钨的测定。
In the presence of Tween 80, tungsten complexed with alizarin violet, and the complex had the maximum absorption at 560 nm at PH1-2. The method was sensitive and had high selectivity and reproducibility. This method can be applied to the determination of tungsten in steel.