双硫腙水相法测水体中锌离子浓度的改进

The Improvement of Spectrophotometry Method for Determination of Zinc Ions with Dithizone

本方法对双硫腙水相分光光度法测定水体中微量锌做了较大的改进，使锌离子的测定范围由0．1μg／mL提高到0—4μg／mL。用本方法与原子吸上法作对比分别测锌合成水样的浓度，偏差为0．9％，是一种简单、准确、廉价的新方法。

The method for determination of zinc ions with dithizone in aqueous by spectrophotometry was improved. The measure range of zinc concentration can be extended from 0 -1 μg/ml to 0 - 4 μg/ml. Compared with atomic absorption method, the error of the result is 0.9% and the method is simple and low- cost.