摘要
建立了一种电感耦合等离子体发射光谱(ICP-OES)同时测定镨钕氧化物中氯(Cl)和硫(以SO_(4)^(2-)形式存在)含量的方法。读取真空紫外波段129~190 nm谱线信号,优化了测试参数。使用硝酸低温溶解样品,选择分析谱线为Cl(134.724 nm)和S(180.731 nm),标准曲线法测定。在优化条件下,Cl和S在0~10 mg/L范围内线性相关系数均为0.9999,Cl回收率为93.1%~107.2%,相对标准偏差(RSD)为4.8%;S回收率为89.9%~94.9%,RSD为3.8%。该方法可以检测镨钕氧化物材料中含量大于0.014%的Cl和含量大于0.003%的S。
A method for the determination of the chlorinity(Cl)and sulfur(existing as SO_(4)^(2-))contents in praseodymium neodymium oxides by inductively coupled plasma optical emission spectroscopy(ICP-OES)was established.Spectral line signals of 129-190 nm in the vacuum ultraviolet band were recorded and the instrument parameters were optimized.The sample was fully dissolved using nitric acid at low temperatures.Under the optimized conditions,the spectral lines selected for analysis were Cl(134.724 nm)and S(180.731 nm).There were good linear relationships for Cl and S,with the correlation coefficients(r)of 0.9999.The standard addition recoveries were 93.1%-107.2%for Cl and 89.9%-94.9%for S,the relative standard deviations(RSDs)were 4.8%for Cl and 3.8%for S.This method could be used to determine Cl content higher than 0.014%and S content higher than 0.003%in praseodymium neodymium oxide materials.
作者
赵艳
谢艳艳
白晓艳
高燕
付娜
陈雄飞
胡梦桥
张力久
ZHAO Yan;XIE Yanyan;BAI Xiaoyan;GAO Yan;FU Na;CHEN Xiongfei;HU Mengqiao;ZHANG Lijiu(Guobiao(Beijing)Testing&Certification Co.,Ltd.,Beijing 100088,China)
出处
《分析试验室》
EI
CAS
CSCD
北大核心
2023年第12期1683-1688,共6页
Chinese Journal of Analysis Laboratory
