Influence of easily ionised elements on the delayed responses of the emission intensities of an analyte in a powdermodulated U-shaped argon stabilised DC arc plasma with an aerosol supply | Zendy

Miroslav Kuzmanović | Zendy; Jelena Savović | Zendy; Mirjana Pavlović | Zendy; Milovan Stoiljković | Zendy; A. AntićJovanović | Zendy; M. Marinković | Zendy

Open Access

Influence of easily ionised elements on the delayed responses of the emission intensities of an analyte in a powdermodulated U-shaped argon stabilised DC arc plasma with an aerosol supply

Author(s) -

Miroslav Kuzmanović,

Jelena Savović,

Mirjana Pavlović,

Milovan Stoiljković,

A. AntićJovanović,

M. Marinković

Publication year - 2005

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc0509033k

Subject(s) - argon , arc (geometry) , analyte , excitation , analytical chemistry (journal) , plasma , atomic physics , chemistry , current (fluid) , excitation temperature , direct current , electric arc , millisecond , materials science , voltage , electrode , emission spectrum , spectral line , physics , geometry , mathematics , quantum mechanics , chromatography , astronomy , thermodynamics

The current of a U-shaped argon stabilised DC arc was square modulated with a 40 Hz repetition frequency between 6 and 3 A. The delayed line intensity re- sponses to the modulation of the arc current were investigated using calcium as a rep- resentative analyte. The intensities of both the atomic and ionic lines were monitored at different distances from the arc axis in the presence of various concentrations of the easily ionised element. Temporal evolutions were monitored on a millisecond time scale. It was found that the responses of the line intesity to the arc current change strongly depended on the observed radial position, especially in the vicinity of the arc axis. The obtained results showed a significant influence of even small amounts of the easily ionised element on the excitation and transport of the analyte and indicated a way of possibly improving the analytical capabilities of the excitation source.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research