直流电弧原子发射光谱法测定铌及铌合金中镉含量
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摘要
采用直流电弧原子发射光谱法测定铌及铌合金中镉含量。实验优化了仪器工作条件,选用纯氧化镉做光斑,226.502 nm作为镉的分析线、样品与缓冲剂的比例为2比1。结果表明,本方法 Cd元素检出限为0.84μg/g,加标回收率在94.7%~108.7%之间,测定值的相对标准偏差(n=11)均小于10%,具有很好的准确度和精度。
DC arc atomic emission spectrometry was adopted to determine cadmium content in niobium and niobium alloy with pure cadmium oxide as the spot,cadmium 226. 502 nm the analysis line and the ration of sample to buffer 2 to 1. Results showed that by this method,the dection limit was 0. 84 μg/g,the recovery rate was between 94. 7% ~ 108. 7%,and the relative standard deviation( n = 11) was lower than 10%,presenting high accuracy and precision.
DC arc atomic emission spectrometry was adopted to determine cadmium content in niobium and niobium alloy with pure cadmium oxide as the spot,cadmium 226. 502 nm the analysis line and the ration of sample to buffer 2 to 1. Results showed that by this method,the dection limit was 0. 84 μg/g,the recovery rate was between 94. 7% ~ 108. 7%,and the relative standard deviation( n = 11) was lower than 10%,presenting high accuracy and precision.
引文
[1]伏军胜,张仁惠,李继宏.直流电弧光谱法测定纯铌及铌制品中砷铋铅锑锡[J].冶金分析,2015,35(8):66—70.
[2]王飞.Prodigy DC ARC直流电弧光谱仪——固体材料及高纯金属分析的最佳选择[C].北京:北京理化分析测试技术学会2010年北京光谱学术年会,2010.
[3]张仁惠.直流电弧发射光谱法测定铌及铌合金中钽含量[J].材料开发与应用,2017,32(6):13—17.
[4]张众,李亚琴,王淑梅.电感耦合等离子体原子发射光谱法测定钒中铁、硅、铝[J].材料开发与应用,2018,33(1):16—19.
[5]伏军胜,郝红梅,张俊峰.电感耦合等离子体原子发射光谱法测定氟钽酸钾中钙镁铁硅[J].材料开发与应用,2016,31(4):16—19.
[6]郑国经,计子华,余兴.原子发射光谱分析技术及应用[M].北京:化学工业出版社,2010.
[2]王飞.Prodigy DC ARC直流电弧光谱仪——固体材料及高纯金属分析的最佳选择[C].北京:北京理化分析测试技术学会2010年北京光谱学术年会,2010.
[3]张仁惠.直流电弧发射光谱法测定铌及铌合金中钽含量[J].材料开发与应用,2017,32(6):13—17.
[4]张众,李亚琴,王淑梅.电感耦合等离子体原子发射光谱法测定钒中铁、硅、铝[J].材料开发与应用,2018,33(1):16—19.
[5]伏军胜,郝红梅,张俊峰.电感耦合等离子体原子发射光谱法测定氟钽酸钾中钙镁铁硅[J].材料开发与应用,2016,31(4):16—19.
[6]郑国经,计子华,余兴.原子发射光谱分析技术及应用[M].北京:化学工业出版社,2010.