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Ionization of Mg and Cd in an atmospheric pressure parallel plate capacitively coupled plasma

TitleIonization of Mg and Cd in an atmospheric pressure parallel plate capacitively coupled plasma
Publication TypeJournal Article
Year of Publication2000
AuthorsRahman, MM, Blades, MW
JournalJournal of Analytical Atomic Spectrometry
Volume15
Pagination1313-1319
Type of ArticleArticle
ISBN Number0267-9477
KeywordsANALYTE IONIZATION, ATOMIC-EMISSION-SPECTROMETRY, ATOMIZATION, CHARGE-TRANSFER REACTIONS, EASILY, EASILY IONIZED ELEMENTS, EXCITATION, HELIUM PLASMAS, IONIZABLE ELEMENT, MICROWAVE-INDUCED PLASMA, RADIO-FREQUENCY
Abstract

The degree of ionization for Mg and Cd vaporized into a parallel plate capacitively coupled plasma (PP-CCP) has been studied. Using electrothermal vaporization and a CCP operating at 200 W, the degree of ionization is 83% and 48% for Mg and Cd, respectively. An increase in applied power increases the degree of ionization. Changes in plasma gas flow rate, up to 1.0 l min(-1), also change the degree of ionization slightly, probably due to mass transport effects and slight changes in the discharge conditions. Additions of EIE (Na as NaNO3) up to 10 times (w/w) the analyte increase the degree of ionization slightly.

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