Detection of Sodium in Highly Pure Graphite via High-Resolution Electrothermal Atomic Absorption Spectrometry with a Continuous Spectrum Source


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This study is dedicated to elucidating the analytical abilities of electrothermal atomic absorption spectrometry with a continuous spectrum source (ETAAS-CSS) to detect the presence of sodium in highly pure graphite powder. In order to plot the calibration dependence for sodium detection, a special technique based on argon dilution of the atomic vapor obtained by introducing the aqueous reference solution in the atomizer is applied. The conditions for thermal pretreatment of highly pure graphite powder and atomization of sodium are established, and the sodium detection threshold is evaluated via ETAAS-CSS (2.6 × 10–4 ng) as well. The validity of the results is confirmed via the sample variation method.

作者简介

V. Es’kina

State Research and Design Institute Giredmet; National Research Technological University MISiS

编辑信件的主要联系方式.
Email: vasilina92@mail.ru
俄罗斯联邦, Moscow; Moscow

O. Dal’nova

State Research and Design Institute Giredmet; National Research Technological University MISiS

Email: vasilina92@mail.ru
俄罗斯联邦, Moscow; Moscow

L. Tursunov

SAITEGRA Ltd.

Email: vasilina92@mail.ru
俄罗斯联邦, Moscow, Moscow oblast

V. Baranovskaya

State Research and Design Institute Giredmet; National Research Technological University MISiS

Email: vasilina92@mail.ru
俄罗斯联邦, Moscow; Moscow

Yu. Karpov

National Research Technological University MISiS; Kurnakov Institute of General and Inorganic Chemistry

Email: vasilina92@mail.ru
俄罗斯联邦, Moscow; Moscow

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