分光光度法测定水中总铬的改进

Improvement of Determining Method on Determining Total Chromium in Water with Spectrophotometry

为简化操作过程,提高总铬测定的效率,采用六价铬标准溶液作为标准系列,不经氧化直接比色制作标准曲线,代替总铬工作曲线,经实验研究对比,该法具有较好的精密度和稳定性,易于操作,且能得到令人满意的结果。

In this paper, a method was studied to simplify operating process and to improve the stability of the method to determine total chromium, in which the working curve of total chromium could be replaced by the standard curve. Comparative study showed that the improved method was stable and simple with satisfactory results.