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《Chemical Industry Times》 2012-08
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Determination of Trace Elements in Electro1ytic Manganese Dioxide with Microwave Digestion by ICP-MS

Li Shiqiu Zhang Ping(Department of Chemistry,Hunan Institute of Technology,Hunan Hengyang 421002)  
To establish the method for determination of Pb,Cd,Cr and Ni elements in electro1ytic manganese dioxide by inductively coupled plasma mass spectrometry(ICP-MS).The sample was dissolved by microwave digestion in HNO3+HCl,the solution was analyzed by ICP-MS.Seclect internal standard elements Sc,In and Bi for the method by which the analyse signal drift is corrected by the signal of another element added to both the standard solution and sample.The influence of mass spectrometry interference has been corrected by selecting different isotope.The optimum conditions for the determination is tested and discussed.The detection limits range from 0.011 μg/L to 0.078 μg/L depending on the elements.Recoveries of samples were of the range 89.33%~112.00% and precision was fine RSD2.34%.This method is accurate,quick-acquired and convenient.It is used in the determination of trace elements in electro1ytic manganese dioxide.
【Fund】: 湖南省大学生研究性学习和创新性实验计划项目
【CateGory Index】: TQ137.12;O657.63
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