Factors affecting analyte transport through the sampling orifice of an inductively coupled plasma mass spectrometer

Laser-excited ionic fluorescence has been used to study the effects of sample matrix, operating conditions, and load coil shielding on analyte ion transport efficiency through the sampling orifice of an inductively coupled plasma mass spectrometer. Significant changes in ion transport efficiency res...

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Bibliographic Details
Published in:Spectrochimica acta. Part B: Atomic spectroscopy 2001-09, Vol.56 (9), p.1687-1695
Main Authors: Macedone, Jeffrey H, Gammon, Dennis J, Farnsworth, Paul B
Format: Article
Language:English
Subjects:
Efficiency
Inductively coupled plasma mass spectrometry
Laser-induced fluorescence
Matrix effects
Plasma potential
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Summary:Laser-excited ionic fluorescence has been used to study the effects of sample matrix, operating conditions, and load coil shielding on analyte ion transport efficiency through the sampling orifice of an inductively coupled plasma mass spectrometer. Significant changes in ion transport efficiency result from changes in sample composition, RF forward power, nebulizer flow and torch shield configuration. The changes in ion transport efficiency correlate well with changes in the potential recorded on a single floating probe placed 1 mm upstream from the sampling orifice.
ISSN:0584-8547
1873-3565
DOI:10.1016/S0584-8547(01)00262-2