Near-absolute gas (isotope) mass spectrometry : Isotope abundance (and atomic weight) determinations of sulphur
Based on ultra-high precision measurements of gaseous fluorides (UF(6), SiF(4)) by mass spectrometry, the existing measurement know-how, including fluoridation chemistry, has been extended to ultra-high precision measurements on another gaseous fluoride (SF(6)). Fluoride gases have the advantage that the mononuclidic fluorine does not cause any isotopic interferences in the mass spectrum, which makes them useful for isotope abundance ratio measurements. A technique is described in which bromine pentafluoride is used as a fluoridation agent to convert silver sulphide to sulphur hexafluoride. A Finnigan MAT 271 gas mass spectrometer was used for the measurements. Isotope abundances of sulphur were measured on three commercial S samples. The results compared favourably to the IUPAC recommended value and were within the range of values given for normal terrestrial sulphur compounds.
Bibliographic Reference: Paper presented: Third International Symposium on Separation Technology, Antwerpen (BE), August 22-27, 1993
Availability: Available from (1) as Paper EN 37512 ORA
Record Number: 199311306 / Last updated on: 1994-11-28
Original language: en
Available languages: en