Analysis of high-purity germanium dioxide by ETV-ICP-AES with preliminary concentration of trace elements

• The technique of germanium dioxide ICP-AES analysis with preconcentration of impurities and their ETV introduction into the ICP is proposed.
• Using of ETV for the sample introduction with preconcentration of impurities allows decrease limits of detection for most of analytes.
• The achievable detection limits are between 0.05 and 20 ng/g.

The paper presents a combined technique of germanium dioxide analysis by inductively coupled plasma atomic emission spectrometry (ICP-AES) with preconcentration of trace elements by distilling off matrix and electrothermal (ETV) introduction of the trace elements concentrate into the ICP. Evaluation of metrological characteristics of the developed technique of high-purity germanium dioxide analysis was performed. The limits of detection (LODs) for 25 trace elements ranged from 0.05 to 20 ng/g. The accuracy of proposed technique is confirmed by “added-found” («or spiking») experiment and comparing the results of ETV-ICP-AES and ICP-AES analysis of high purity germanium dioxide samples.

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