论文部分内容阅读
测定钢丝磷化液中的亚硝酸根,目前尚未有较好的方法。文献探讨了用亚硝基亚铁络离子测定磷化液中硝酸根的光度法,此法中络离子只有在高酸度下才能形成,最大吸收峰在500～510nm,络合比为1:1。
Determination of nitrite in the phosphating solution, there is no better way. The literature discusses the determination of nitrite in the phosphating solution by nitrous ferrocene ions. The complex ions can only form under high acidity with the maximum absorption at 500-510 nm and the complex ratio of 1: 1 .