title: Relative sensitivity of rare earth elements in spark-source mass spectrometry.
abstract: A method for calculating the relative sensitivity factors for the rare earth elements in geological material is outlined. A close correlation is found between the relative sensitivity factors calculated and isotopic mass and the first ionization potential for the elements. The points are grouped in the vicinity of a regression line, which may be used to determine the relative sensitivity factors for all the rare earth elements.
authors.affiliation: Institutt for Geologi, University of Oslo, Oslo, Norway.
authors.forename: E
authors.initials: E
authors.lastname: Roaldset