摘要
准确分析膨润土中钾、钠、铅、锌、砷的含量,对判断膨润土矿质量具有重要意义。实验采用盐酸、硝酸、氢氟酸溶解样品,分别选用钾、钠、铅、锌、砷的灵敏线766.517nm、589.591nm、220.353nm、206.200nm、188.979nm作为分析谱线,建立了电感耦合等离子体原子发射光谱法(ICP-AES)测定膨润土中钾、钠、铅、锌、砷的方法。共存元素的干扰校正试验表明,样品中共存元素对待测元素无明显干扰。各待测元素的校准曲线线性相关系数均大于0.9990。将本方法用于膨润土实际样品中钾、钠、铅、锌、砷的测定,钾、钠、铅、锌各元素的相对标准偏差(RSD,n=11)小于3%,砷的相对标准偏差(RSD,n=11)小于13%,本方法测得结果与火焰原子吸收光度法以及原子荧光光谱法测定结果吻合。本方法准确、简便、快速,能满足日常分析需求。
The accurate analysis of the content of potassium,sodium,lead,zinc,arsenic in bentonite was of great significance for judging the quality of bentonite.The sample was dissolved with hydrochloric acid,nitric acid and hydrofluoric acid.The sensitive lines of potassium,sodium,lead,zinc and arsenic were 766.517 nm,589.591nm,220.353 nm,206.200 nm,188.979 nm respectively,and these lines were selected as the analytical lines.The analytical method for the determination of potassium,sodium,lead,zinc and arsenic in bentonite by inductively coupled plasma atomic emission spectrometry(ICP-AES)was established.The interference correction tests of coexisting elements showed that the coexisting elements in sample had no influence on the testing elements.The linear correlation coefficients of calibration curves for testing elements were all higher than 0.9990.The experimental method was applied for the determination of potassium,sodium,lead,zinc and arsenic in actual sample.The relative standard deviations(RSD,n=11)of potassium,sodium,lead,zinc’s determination results were less than 3%,and arsenic’s determination result was less than 13%.The results obtained by this method were in good agreement with those determined by flame atomic absorption spectrometry and atomic fluorescence spectroscopy.The method was accurate,simple and rapid and could meet the needs of daily analysis.
作者
樊鑫
赵艳兵
Fan Xin;Zhao yanbing(State Key Laboratory of Advanced Stainless Steel Materials,Taiyuan Iron and Steel(Group)Co.,Ltd.,Taiyuan 030300,China;.Technology center,ShanXi Taigang Stainless Steel Co.Ltd.,Taiyuan 030003,China)
出处
《现代科学仪器》
2020年第4期50-53,共4页
Modern Scientific Instruments
关键词
电感耦合等离子体原子发射光谱法
膨润土
钾
钠
铅
锌
砷
inductively coupled plasma atomic emission spectrometry(ICP-AES)
bentonite
potassium
sodium
lead
zinc
arsenic
