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dc.contributor.author Raseleka, RM en_US
dc.contributor.author Human, HGC en_US
dc.date.accessioned 2007-03-27T09:14:38Z en_US
dc.date.accessioned 2007-06-07T10:06:16Z
dc.date.available 2007-03-27T09:14:38Z en_US
dc.date.available 2007-06-07T10:06:16Z
dc.date.copyright en_US
dc.date.issued 2004 en_US
dc.identifier.citation Raseleka, RM and Human, HGC. 2004. Identification of molecules in graphite furnace by laser ionization time-of-flight mass spectrometry: sulfur and chlorine containing compounds. Journal of Analytical Atomic Spectrometry, vol. 19(7), pp 899-905 en_US
dc.identifier.issn 0267-9477 en_US
dc.identifier.uri http://hdl.handle.net/10204/2092 en_US
dc.identifier.uri http://hdl.handle.net/10204/2092
dc.description.abstract An electro thermal vaporizer (ETV) coupled to a time-of-flight mass spectrometer (TOF-MS) with laser ionization (LI) was applied to the identification of molecules from sulphur and chlorine matrices in the furnace. An interface was developed to entrain furnace vapours from the matrices under study, i.e., sulphur, sulphuric acid, magnesium sulphate, chlorides of sodium, potassium, caesium, magnesium, calcium and strontium, into the TOF-MS. These were then ionized on the TOF axis with 219, 240 and 266 nm laser radiations. The S+ and SO+ ions were mainly detected from sulphuric acid and magnesium sulphate in the furnace when ionized with a 219 nm beam. SO2+ was observed with 266 nm. Mainly S+ and S-2(+) were detected when sulphur was ionized with 219 and 266 nm. The spectra obtained at 219 nm were identical to those attained at 240 nm for the chloride matrices. The MCl+, M2Cl+, M+, and M-2(+) (where M is the metal) were observed for Na, K and Cs. Various compositions of oxides (MxOy)(+), M2OCl+ and chlorides MCl+ and MCl2+ were identified for Ca and Sr. Mg only produced the Mg+ isotopes. en_US
dc.format.extent 334290 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en en_US
dc.publisher The Royal Society of Chemistry en_US
dc.rights Copyright: 2004 The Royal Society of Chemistry en_US
dc.source en_US
dc.subject Graphite furnace vaporizer en_US
dc.subject Electro thermal vaporizer en_US
dc.subject ETV en_US
dc.subject Tunable laser en_US
dc.subject Time-of-flight mass spectrometer en_US
dc.subject TOF-MS en_US
dc.subject Inorganic compounds en_US
dc.subject Molecules identification en_US
dc.subject Analytical chemistry en_US
dc.subject Spectroscopy en_US
dc.title Identification of molecules in graphite furnace by laser ionization time-of-flight mass spectrometry: sulfur and chlorine containing compounds en_US
dc.type Article en_US


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