Sensitivity improvement in ICP MS analysis of fuels and light petroleum matrices using a microflow nebulizer and heated spray chamber sample introduction

G. Caumette , C.-P. Lienemann , Isabelle Merdrignac (1) , H. Paucot , Brice Bouyssière (2) , Ryszard Lobinski (2)

1 IFPEN - IFP Energies nouvelles
2 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

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. © 2009 Elsevier B.V. All rights reserved.

Mots clés: Direct injection; Fuel analysis; Heated spray chamber; ICP-MS

Domaines: Chimie analytique

G. Caumette, C.-P. Lienemann, Isabelle Merdrignac, H. Paucot, Brice Bouyssière, et al.. Sensitivity improvement in ICP MS analysis of fuels and light petroleum matrices using a microflow nebulizer and heated spray chamber sample introduction. Talanta, 2009, 80 (2), pp.1039--1043. ⟨10.1016/j.talanta.2009.08.017⟩. ⟨hal-01560746⟩