电位滴定法测定硼化锆中硼含量
Determination of Boron Content in Zirconium Boride by Potentiometric Titration Method
刘雅甜 1李甜 1栗生辰 1胡璇 1苗歆悦1
作者信息
- 1. 国标(北京)检验认证有限公司,北京 101407
- 折叠
摘要
硼化锆是第三代核反应堆的重要燃料,其硼元素含量对材料的性能具有重要影响.目前,对硼化锆中硼元素含量的测定尚未建立分析方法标准.本文建立电位滴定测定硼化锆中硼含量的新方法,探讨了硼化锆的溶解方式、滴定模式、滴定时pH值和甘露醇用量等试验条件,并验证了方法的准确度和精密度.优化后的实验条件为:样品前处理方式为加入 3g氢氧化钠于 750℃中熔融 20 min,加入2g甘露醇,采用SET(pH值)+DET滴定方式.加标回收率为 99.7%～100.2%,相对标准偏差优于电感耦合等离子体原子发射光谱法.该方法具有良好的准确性和重复率,操作简单、快捷,适用于硼化锆中硼含量的检测.
Abstract
Zirconium boride is an important fuel for the third-generation nuclear reactor,and its boron content has an significant effect on the properties of the material.At present,the standard analysis method has not been established for the determination of boron content in zirconium boride.In this paper,a new method for the determination of boron content in zirconium boride by potentiometric titration method is established.The dissolution method,titration modes pH value and mannitol dosage are investigated.And the accuracy and precision of the potentiometric titration method were verified.The optimized experimental conditions were as follows:the sample pre-treatment method was 3 g sodium hydroxide was melted at 750℃for 20 min,2 g mannitol was added subsequently,SET(pH value)+DET titration method was chose.The recoveries are 99.7%～100.2%,and the relative standard deviation is better than that of inductively coupled plasma atomic emission spectrometry tests.This method has good accuracy,repetition rate,simple and fast operation characteristics,which is suitable for the determination of boron content in zirconium boride.
关键词
电位滴定法/硼化锆/硼含量/甘露醇Key words
potentiometric titration/zirconium boride/boron content/mannitol引用本文复制引用
出版年
2024
NETL
NSTL
万方数据