Direct multi-element analysis of crude oils and gas condensates by double-focusing sector field inductively coupled plasma mass spectrometry (ICP MS)

Pawel Pohl (1, 2) , Nopparat Vorapalawut (3, 2) , Brice Bouyssière (4) , Hervé Carrier (5) , Ryszard Lobinski (4, 6)

1 Faculty of Chemistry
2 LCABIE - Laboratoire de Chimie Analytique Bio-Inorganique et Environnement
3 Faculty of Science
4 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux
5 TEFC - Thermodynamique et Energétique des fluides complexes
6 Faculty of Chemistry

A double-focusing sector field ICP MS was optimized for the direct simultaneous determination of Ag, Al, Ba, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Pb, Sn, Ti, V in organic solutions. Polyatomic interferences originating from the carbon-rich matrix were completely eliminated at a resolution of 4000 allowing the detection limits at the low pg g-1 level to be obtained (typically one order of magnitude lower than using a quadrupole ICP MS). A method for the routine comprehensive trace element analysis of xylene solutions of oil samples using external calibration was developed. It was validated by the analysis of three certified reference materials and applied to the analysis of 2 gas condensate samples and 4 oil samples of different origins.

Mots clés: Oil samples; Polyatomic interferences; Simultaneous determinations; Gas oils; Inductively coupled plasma mass spectrometry; Metal analysis; Trace analysis; Detection limits; Multielement analysis

Domaines: Chimie-Physique [physics.chem-ph]

Pawel Pohl, Nopparat Vorapalawut, Brice Bouyssière, Hervé Carrier, Ryszard Lobinski. Direct multi-element analysis of crude oils and gas condensates by double-focusing sector field inductively coupled plasma mass spectrometry (ICP MS). Journal of Analytical Atomic Spectrometry, 2010, 25 (5), pp.704-709. ⟨10.1039/c000658k⟩. ⟨hal-00686603⟩