Journal
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
Volume 23, Issue 2, Pages 181-192Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b706837a
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Several readily measured parameters were evaluated for their ability to flag the presence of plasma-related matrix e. ects in inductively coupled plasma-atomic emission spectrometry. Of six plasma-species or analyte-emission-based candidates, two showed positive responses to plasma-related matrix effects. These two, the emission intensity from argon neutral-atomic lines and the spatially resolved vertical pattern of analyte emission, change considerably when matrix effects are present. In addition, the coupling of radiofrequency energy to a probe coil placed inside the ICP torch box correlated strongly with matrix e. ects. All three parameters show promise as alternatives to commonly used ion/atom emission intensity ratios for indicating the presence of plasma-related matrix effects.
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