The effect of easily ionized elements on analyte emission efficiency in inductively coupled plasma spectrometry

In a non-thermal source such as the inductively coupled plasma (ICP), non-radiative excited-state deactivation processes could conceivably reduce the efficiency of analyte emission just as they do fluorescence. A change in the corresponding collisional deactivation rates would therefore alter “emiss...

Full description

Saved in:
Bibliographic Details
Published in:Spectrochimica acta. Part B: Atomic spectroscopy 1994, Vol.49 (2), p.149-161
Main Authors: Wu, Min, Hieftje, G.M.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In a non-thermal source such as the inductively coupled plasma (ICP), non-radiative excited-state deactivation processes could conceivably reduce the efficiency of analyte emission just as they do fluorescence. A change in the corresponding collisional deactivation rates would therefore alter “emission efficiency” much as it would quantum efficiency. Indeed, such changes could explain otherwise confusing reports in the literature concerning the effects of easily ionized elements (EIEs) on analyte emission. In this study, the effect of several EIEs on the quantum efficiency of sodium fluorescence was studied experimentally and modeled theoretically. It is concluded that collisional quenching cannot be responsible for the EIE interferences that currently afflict ICP atomic emission spectrometry.
ISSN:0584-8547
1873-3565
DOI:10.1016/0584-8547(94)80014-6