现代方波伏安法(SWV)测定辉长石中微量钒的研究

Trace Vanadium in Minera Detemined by Modern Square Wave Voltammetry

本文使用美国ＰＡＲ公司ＥＧΣＧ３８４Ｂ多功能极谱仪建立了ＳＷＶ法测定辉长石中微量钒的方法。Ｎａ２Ｏ２溶样、水浸溶块、ＨＡｃ－ＮａＡｃ体系，起始电位－０．５０Ｖ，终止电位－１．５０Ｖ，钒峰电位－１．０４Ｖ，灵敏度比经典极谱法提高２个数量级，在所选测定体系条件下，钒峰高随浓度增大而明显增高，且峰电位再现性好、峰形稳定，并用该法对实际样品测定，效果满意。

The article builded method on detemined trace vanadium in minera use ΕGΣG 384B multifuoction made by PAK company of American. The sample treated with Na 2O 2 was at 600℃ in stove. HAc NaAc system was chosen. Initial E-0.500V,Final E-1.500V, Vanadium peak E-1.04V. The sensitivity highest two index number that ordinary voltammetry. The chosen system has produced ideal effect: the peak height of vanadium obviously rises with the concentration of Vanadium, and the identicalness of the peak is satisfactory.