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1引言非有机溶剂萃取光度法测定金属离子与传统的有机溶剂萃取光度法比较，既保持了后者提高分析方法灵敏度和选择性优点，又具有不挥发、无毒、操作简便等特点，是一种新的光度分析法。本文研究了在聚乙二醇－锌试剂－硫酸铵体系中的非有机溶剂萃取光度测定Ga（Ⅱ）的条件，将
1 Introduction Non-organic solvent extraction spectrophotometry Determination of metal ions and traditional organic solvent extraction spectrophotometry, both to maintain the latter to improve the sensitivity and selectivity of the analytical advantages, but also with non-volatile, non-toxic, easy to operate and so on, is a New photometric method. In this paper, the conditions for the determination of Ga (Ⅱ) by non-organic solvent extraction in polyethylene glycol-zinc reagent-ammonium sulfate system were studied.