| 微波消解-电感耦合等离子体原子发射光谱法测定膨润土中6种元素 |
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| 引用本文： | 邬景荣,许廷波,符峙宗,杨海欣,梁海敏.微波消解-电感耦合等离子体原子发射光谱法测定膨润土中6种元素[J].理化检验(化学分册),2020,56(2):185-190. |
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| 作者姓名： | 邬景荣 许廷波 符峙宗 杨海欣 梁海敏 |
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| 作者单位： | 中国检验认证集团广西有限公司,防城港 538001;广西中检检测技术服务有限公司,防城港 538001;广西防城港市海洋环境监测预报中心,防城港 538001 |
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| 摘 要： | 膨润土样品用硝酸、盐酸、氢氟酸在超级微波消解仪中进行消解,消解完毕后加入高氯酸加热除去有机物、碳类。采用电感耦合等离子体原子发射光谱法测定样品溶液中钙、镁、磷、锰、铁、钛等6种元素的含量。6种元素的质量浓度在一定范围内与其对应的发射强度呈线性关系,方法的检出限(3s)为0.001~0.009mg·L-1。方法应用于膨润土样品的分析,测定值的相对标准偏差(n=11)为0.74%~2.7%。用标准加入法做方法的回收试验,测得回收率为96.0%~102%,方法测定值与X射线荧光光谱法测定结果相符。
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| 关 键 词： | 电感耦合等离子体原子发射光谱法 元素 膨润土 微波消解 |
ICP-AES Determination of 6 Elements in Bentonite with Microwave Digestion |
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| WU Jingrong,XU Tingbo,FU Zhizong,YANG Haixin,LIANG Haimin.ICP-AES Determination of 6 Elements in Bentonite with Microwave Digestion[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2020,56(2):185-190. |
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| Authors: | WU Jingrong XU Tingbo FU Zhizong YANG Haixin LIANG Haimin |
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| Institution: | (China Certification and Inspection Group Guangxi Co.,Ltd.,Fangchenggang 538001,China;Guangxi CCIC Inspection Technology Service Co.,Ltd.,Fangchenggang 538001,China;Guangxi Fangchenggang Marine Environment Monitoring and Forecasting Center,Fangchenggang 538001,China) |
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| Abstract: | The bentonite sample was digested with nitric acid,hydrochloric acid and hydrofluoric acid in super microwave digester.After digestion,perchloric acid was added to remove organic matter and carbon by heating.ICP-AES was applied to the determination of 6 elements,i.e.Ca,Mg,P,Mn,Fe and Ti in the sample solution.Linear relationships between values of emission intensity and mass concentration of the 6 elements were kept in definite ranges.Detection limits(3 s)of the method ranged from 0.001 to 0.009 mg·L-1.The proposed method was applied to the analysis of bentonite sample,giving RSDs(n=11)of determined values in the range of 0.74%-2.7%.Test for recovery was performed by standard addition method,giving values of recovery in the range of96.0%-102%.Results given by the method were in consistency with the values obtained by XRFS. |
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| Keywords: | ICP-AES element bentonite microwave digestion |
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