滴定法
电位滴定法
氧化还原滴定
乏核燃料
联氨(抗抑郁剂)
氧化还原
化学
计算机科学
材料科学
分析化学(期刊)
核化学
无机化学
色谱法
电极
物理化学
作者
Ashok Kumar Sahoo,N. Malathi,R. Ananthanarayanan,K. Praveen,N. Murali
摘要
We propose a high precision rapid personal computer (PC) based potentiometric titration technique using a specially designed mini-cell to carry out redox titrations for assay of chemicals in quality control laboratories attached to industrial, R&D, and nuclear establishments. Using this technique a few microlitre of sample (50–100 μl) in a total volume of ∼2 ml solution can be titrated and the waste generated after titration is extremely low comparing to that obtained from the conventional titration technique. The entire titration including online data acquisition followed by immediate offline analysis of data to get information about concentration of unknown sample is completed within a couple of minutes (about 2 min). This facility has been created using a new class of sensors, viz., pulsating sensors developed in-house. The basic concept in designing such instrument and the salient features of the titration device are presented in this paper. The performance of the titration facility was examined by conducting some of the high resolution redox titrations using dilute solutions-–hydrazine against KIO3 in HCl medium, Fe(II) against Ce(IV) and uranium using Davies–Gray method. The precision of titrations using this innovative approach lies between 0.048% and 1.0% relative standard deviation in different redox titrations. With the evolution of this rapid PC based titrator it was possible to develop a simple but high precision potentiometric titration technique for quick determination of hydrazine in nuclear fuel dissolver solution in the context of reprocessing of spent nuclear fuel in fast breeder reactors.
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