Determination of Fifteen Rare Earth Elements in Geological Samples by Inductively Coupled Plasma Atomic Emission Spectrometry Together with Sample Separation and Enrichment using Cation Exchange Resin
Received:October 31, 2013  Revised:November 15, 2013
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DOI:doi:10.3969/j.issn.2095-1035.2014.01.009
KeyWord:cation exchange resin;separation and enrichment;inductively coupled plasma atomic emission spectrometry;geological samples;rare earth elements
           
AuthorInstitution
HE Panhong 河南省核工业放射性核素检测中心,郑州
YANG Zhen 河南省核工业放射性核素检测中心,郑州
RONG Yao 河南省核工业放射性核素检测中心,郑州
ZHANG Yanling 河南省核工业放射性核素检测中心,郑州
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Abstract:
      The samples were dissolved with four kinds of acids(hydrochloric acid, nitric acid and perchloric acid and hydrofluoric acid) and then were separated and enriched using cation exchange resin. Afterwards, the contents of the fifteen rare earth elements were simultaneously determined by ICP-AES in one solution. A 1.2 mol/L HCl solution was used as equilibrium liquid and leacheate, and a 4.0 mol/L HCl solution was used as eluant. The best analytical lines were chosen to avoid the spectral interference from impurity elements. The detection limits of every rare earth element were lower than 1.5 μg/g, and the relative standard deviations were better than 11%. The results of testing standard reference materials were well agree with the recommend values. The method was suitable for the simultaneous determination of rare earth elements in geological samples.
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