氢化物发生-原子荧光光谱法测定高纯铝酸钙粉中砷
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摘要
采用氢化物发生-原子荧光光谱法对高纯铝酸钙粉中砷的测定进行了研究。样品以盐酸(1+1)、硝酸(1+1)溶解,研究了酸介质及酸浓度、硫脲-抗坏血酸用量对砷测定的影响。在优化的实验条件下,得到砷标准曲线的线性相关系数大于0.999 5。对样品进行了精密度和加标回收实验,得到测定砷相对标准偏差为1.8%～2.6%,加标回收率在98.5%～108%。方法能满足高纯铝酸钙粉中砷的测定。
Determination of arsenic in high purity calcium aluminate powder was studied by hydride generation-atomic fluorescence spectrometry.The sample was dissolved in hydrochloric acid(1+1)and nitric acid(1+1),the influence of acid medium and acidity,and the amount of thiourea and L-ascorbic acid were studied.Under the optimized experimental conditions,the linear correlation coefficient of arsenic standard curve was greater than 0.999 5.Precision and recovery tests were carried out on the samples,the relative standard deviations(RSD,n=6)were between 1.8% and 2.6%,the standard recovery rate were between 98.5% and 108%.This method could satisfy with the determination of arsenic in high calcium aluminate powder.
Determination of arsenic in high purity calcium aluminate powder was studied by hydride generation-atomic fluorescence spectrometry.The sample was dissolved in hydrochloric acid(1+1)and nitric acid(1+1),the influence of acid medium and acidity,and the amount of thiourea and L-ascorbic acid were studied.Under the optimized experimental conditions,the linear correlation coefficient of arsenic standard curve was greater than 0.999 5.Precision and recovery tests were carried out on the samples,the relative standard deviations(RSD,n=6)were between 1.8% and 2.6%,the standard recovery rate were between 98.5% and 108%.This method could satisfy with the determination of arsenic in high calcium aluminate powder.
引文
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[9]王勇,王维,刘元清,等.氢化物发生-原子荧光光谱法测定二氧化钛中砷[J].冶金分析(Metallurgical Analysis),2016,36(4):62-65.
[2]罗治定,陈庆芝,金倩,等.预还原氢化物发生-原子荧光光谱法快速测定化探样品中的As,Sb,Bi,Hg[J].中国无机分析化学(Chinese Joural of Inorganic Analytical Chemistry),2018,8(2):17-21.
[3]梁宇宁,黄智,何星存,等.氢化物原子吸收法测定高纯碳酸钙中铅[J].分析实验室(Chinese Journal of Analysis Laboratory),2007,26(增刊1):21-22.
[4]修凤凤,樊勇,李俊雨.氢化物发生-原子荧光光谱法测定地球化学样品中的锗[J].中国无机分析化学(Chinese Joural of Inorganic Analytical Chemistry),2017,7(2):31-33.
[5]杨敬金,张加玲.浊点萃取-氢化物发生-原子荧光光谱法测定水样中痕量铅[J].理化检验:化学分册(Physical Testing and Chemical Analysis Part B:Chemical Analysis),2011,47(3):275-277
[6]杨佳,薛瑞,张超.氢化物发生-原子荧光光谱法测定铀矿石中的锗元素[J].中国无机分析化学(Chinese Joural of Inorganic Analytical Chemistry),2016,6(2):16-19.
[7]刘天平,戴凤英.氢化物发生-原子荧光光谱法测定硒中痕量锑[J].冶金分析(Metallurgical Analysis),2011,31(9):55-58.
[8]刘沛明,雷璇,林烨,等.微波消解-氢化物原子荧光光谱法测定乳制品中铅[J].检验检疫学刊(JournalofInspection and Quarantine),2014,24(2):56-57.
[9]王勇,王维,刘元清,等.氢化物发生-原子荧光光谱法测定二氧化钛中砷[J].冶金分析(Metallurgical Analysis),2016,36(4):62-65.