铀矿冶2024，Vol.43Issue(3)：56-62,7.DOI:10.13426/j.cnki.yky.2023.12.09
萃余水相中酸和铀的连续测量方法
Continuous Measurement Method of Acid and Uranium in the Raffinate Phase
陈强 1董彦霞 1张慧妍 1王扬 1陈福平1
作者信息
- 1. 核工业北京化工冶金研究院,北京 101149
- 折叠
摘要
Abstract
Acid concentration and uranium concentration in raffinate phase generally need to be meas-ured separately,which is cumbersome and requires a large amount of work.A new method for contin-uous measurement of acid concentration and uranium concentration in raffinate phase was developed.A strong base was used as titration agent,the color change of the indicator was selected to indicate the titration endpoint.After completing the acid concentration detection,the sulfuric acid and arsenazo Ⅲsolutions with a certain amount and concentration were added to the above solution to make the solu-tion color,and the absorbance of the color solution was measured at 650 nm.The results show that the precision of measuring acid concentration and uranium concentration is 1.53％and 1.13％respec-tively,the indication error for measuring acid concentration and uranium concentration is 1.69％and 1.52％respectively.For the measurement of actual water samples,the measurement data of this method is basically consistent with that of the laboratory current methods,the recovery rate of acid concentration measurement is between 97.0％and 102.5％,and the recovery rate of uranium concen-tration measurement is between 97.0％and 102.0％.The method is suitable for continuous monito-ring of acid concentration and uranium concentration in raffinate phase and has accurate and fast char-acteristics.关键词
萃余水相/铀/余酸/酸碱滴定法/偶氮胂Ⅲ分光光度法/连续测量Key words
raffinate phase/uranium/residual acid/acid-base titration/arsenazo Ⅲ spectrophotome-try/continuous measurement分类
化学化工引用本文复制引用
陈强,董彦霞,张慧妍,王扬,陈福平..萃余水相中酸和铀的连续测量方法[J].铀矿冶,2024,43(3):56-62,7.
