title: Use of resonance ionization mass spectrometry for determination of Cs ratios in solid samples.
abstract: A method to quantitatively determine the radionuclidic content of complex samples with a minimum of chemical preparation has been under development at the National Institute of Standards and Technology (NIST). Based on earlier studies with resonance ionization mass spectrometry (RIMS), a graphite furnace was added to the RIMS system at NIST. Efficiency determinations for 133Cs in solution and isotopic ratio measurements of cesium (135Cs/137Cs) for an NIST nuclear burn-up sample using RIMS and for a sediment natural matrix standard using thermal ionization mass spectrometry are presented.
authors.affiliation: Physics Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899-8462, USA. lisa.karam@nist.gov
authors.forename: L R
authors.initials: LR
authors.lastname: Karam
authors.forename: L
authors.initials: L
authors.lastname: Pibida
authors.forename: C A
authors.initials: CA
authors.lastname: McMahon