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钒-没食子酸配合物的吸附溶出伏定法研究
A STUDY ON THE ADSORPTIVE STRIPPING VOLTAMMETRY OF VANADIUM-GALLIC ACID COMPLEX
【摘要】 本文研究了钒-没食子酸配合物在静汞电极上的吸附溶出特性.在含有1.6×10-4mol/dm3没食子酸的Britton—Robinson缓冲溶液((pH6.1)中,钒配合物的吸附溶出峰电位在-0.65V(VS.Ag/AgC1)左右,2.5次微分溶出峰高与钒浓度在0.0001—0.014μg/ml之间成线性关系.方法已成功地应用于水样和煤飞灰中痕量钒的测定。
【Abstract】 The adsorptive voltammetric characteristics of the complex of vanadi-um with gallic acid on a stationary mercury electrode have been inve-stigated. In the Britton-Robinson buffer solution at pH6.1 containing1.6×10-4mol/dm3 gallic acid,a sensitive adsorptive complex wave of vanadium-gallic acid at -0.65V(vs.Ag/AgCl) has been obtained by using linearpotential sweep Voltarmmetry. The 2.5th order differential peak height islinearly proportional to the concentration of vanadium in the range of0.0001-0.014μg/ml. The proposed method has been applied to the deter-mination of trace amounts of vanadium in tap water and coal fly ashwith satisfactory results.
- 【文献出处】 湘潭大学自然科学学报 ,Natural Science Journal of Xiangtan University , 编辑部邮箱 ,1988年01期
- 【被引频次】6
- 【下载频次】48