Sensitivity improvement in ICP MS analysis of fuels and light petroleum matrices using a microflow nebulizer and heated spray chamber sample introduction.
Reasons for signal suppression during the analysis of light petroleum matrices by inductively coupled plasma mass spectrometry (ICP MS) were examined. A decrease of the ionization efficiency of the plasma was found to be the principal factor responsible for this loss of sensitivity. Consequently, an interface based on a total consumption micronebulizer and a heated spray chamber was constructed to alleviate this problem. A method based on flow-injection ICP MS using this interface was developed for the direct multielement analysis of undiluted fuels (gasoline, kerosene) and gas condensates offering an increase in sensitivity by at least a factor of 3-4 in comparison with the existing setups.
Caumette
Guilhem
G
CNRS-UPPA, UMR 5254, LCABIE, Hélioparc, Pau, France.
Lienemann
Charles-Philippe
CP
Merdrignac
Isabelle
I
Paucot
Hugues
H
Bouyssiere
Brice
B
Lobinski
Ryszard
R
D005742:Gasoline / Q000032:analysis*; D007648:Kerosene / Q000032:analysis*; D013058:Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D008670:Metals / Q000032:analysis; D008982:Molybdenum / Q000737:chemistry; D009330:Nebulizers and Vaporizers; D010578:Petroleum / Q000032:analysis*; D015203:Reproducibility of Results; D013696:Temperature
D005742:Gasoline; D007648:Kerosene; D008670:Metals; D010578:Petroleum; D008982:Molybdenum