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本文应用铀-5-Br-PADAP-氟离子-氯化十六烷基吡啶四元配合物体系双波长等吸收点法,使干扰组分在所选取的两个波长处的吸光度差等于零,从而消除了干扰组分对铀测定的影响,确定了不经分离直接测定矿石中铀的方法。方法简便、快速,准确度高。实验部分 1.主要试剂和仪器: 标准铀溶液:由基准U_3O_8配成20μg U/ml(1:4 HC1液)。混合配合剂:1.5％ NaF-3.0％CyDTA-1.5％酒石酸-0.25％EDTA溶液(1％氢氧化钠介质)。混合显色剂:0.05％
In this paper, the dual-wavelength iso-absorption point method of uranium-5-Br-PADAP-fluoride ion-cetylpyridinium chloride quaternary complex system is used to make the absorbance difference of the interfering components at the two selected wavelengths equal to zero The influence of interference components on uranium determination was eliminated, and the direct determination of uranium in ore without separation was determined. The method is simple, fast and accurate. Experimental Part 1. Main Reagents and Instruments: Standard uranium solution: Prepare 20μg U / ml (1: 4 HCl solution) from baseline U_3O_8. Mixed ingredients: 1.5% NaF-3.0% CyDTA-1.5% tartaric acid-0.25% EDTA solution (1% sodium hydroxide medium). Mixed developer: 0.05%