用示波滴定法测定含腐植酸叶面肥中铜的含量

Determination of Cu (Ⅱ) in Foliar Microelement Fertilizer Containing Humic Acid by Oscillo-titration

本文研究了利用示波滴定技术测定含腐植酸的叶面肥中铜含量的新方法。该法以示波图形的突变确定滴定终点 ,不受溶液颜色 ,沉淀的影响 ,具有准确、快速、简便的优点 ,具有推广应用价值。

This paper studies on a new method of determining Cu (Ⅱ) in foliar microelement fertilizer containing humic acid by using oscillo-titration. In this method the finishing point of the titration is determined by the mutation of oscillograph trace having no influence of color and sediment of the solutions .Being accurate, rapid and simple, this method is worth popularizing and applying.