title: Optimisation of ICPMS collision/reaction cell conditions for the simultaneous removal of argon based interferences of arsenic and selenium in water samples.
abstract: The optimisation of ICPMS collision/reaction cell conditions for the simultaneous analysis of arsenic and selenium is described. A mixture of 3.8mL min(-1) of H(2) and 0.5mL min(-1) of He was found to be suitable for the removal of both ArAr(+) and ArCl(+) interferences. Detection limits down to 30ng (element) L(-1) in total analysis, and between 81 and 230ng (element) L(-1) in speciation analysis were achieved in chloride matrix (1gL(-1) NaCl). After validation, the method was applied to commercially available mineral waters.
authors.affiliation: Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Université de Pau et des Pays de l'Adour, UMR 5034, Helioparc Pau Pyrénées, 2 avenue du Président Angot, 64000 Pau, France.
authors.forename: Jérôme
authors.initials: J
authors.lastname: Darrouzès
authors.forename: Maïté
authors.initials: M
authors.lastname: Bueno
authors.forename: Gaëtane
authors.initials: G
authors.lastname: Lespès
authors.forename: Michel
authors.initials: M
authors.lastname: Holeman
authors.forename: Martine
authors.initials: M
authors.lastname: Potin-Gautier