【摘要】 根据龙胆酸与Ｔｂ—ＥＤＴＡ在碱性溶液中能形成三元配合物产生铽的敏化荧光，建立了检测龙胆酸的高灵敏、高选择性的新方法．在所选定的最佳条件下，龙胆酸的浓度在４．０×１０－８一４．０×１０－６ｍｏｌ·Ｌ－１范围内与体系相对荧光强度成良好的线性关系，方法的检测限为６．９×１０－９ｍｏｌ·Ｌ－１．用该法不经任何分离测定了血浆、血清、尿样中龙胆酸的回收实验，结果满意．更多还原

【Abstract】 Based on the formatinn of a termary complex between gentisic acid, Tb3+ andEDTA in alkaline aqueous solution, a new sensitive and selective fluorimetric method for thedetennination of gentisic add is established. Under the optimum experimental conditions, thelinear range of the detendnation is 4.0 x 10-8 - 4.0 x 10-6mol. L-1, and the detection fort is6.9 x 10-9 mol. L-1. The method is suusfully applied to the detendnation of gentisic acidin untreated human serum plasma and urine samples. Analytical recoveries from there samplessped with gentisic acid are detennined with satisfaction.更多还原