Raseleka, RMHuman, HGC2007-03-272007-06-072007-03-272007-06-072004Raseleka, 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 899-9050267-9477http://hdl.handle.net/10204/2092http://hdl.handle.net/10204/2092An 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.334290 bytesapplication/pdfenCopyright: 2004 The Royal Society of ChemistryGraphite furnace vaporizerElectro thermal vaporizerETVTunable laserTime-of-flight mass spectrometerTOF-MSInorganic compoundsMolecules identificationAnalytical chemistrySpectroscopyArticleRaseleka, R., & Human, H. (2004). Identification of molecules in graphite furnace by laser ionization time-of-flight mass spectrometry: sulfur and chlorine containing compounds. http://hdl.handle.net/10204/2092Raseleka, RM, and HGC Human "Identification of molecules in graphite furnace by laser ionization time-of-flight mass spectrometry: sulfur and chlorine containing compounds." (2004) http://hdl.handle.net/10204/2092Raseleka R, Human H. Identification of molecules in graphite furnace by laser ionization time-of-flight mass spectrometry: sulfur and chlorine containing compounds. 2004; http://hdl.handle.net/10204/2092.TY - Article AU - Raseleka, RM AU - Human, HGC AB - 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. DA - 2004 DB - ResearchSpace DP - CSIR KW - Graphite furnace vaporizer KW - Electro thermal vaporizer KW - ETV KW - Tunable laser KW - Time-of-flight mass spectrometer KW - TOF-MS KW - Inorganic compounds KW - Molecules identification KW - Analytical chemistry KW - Spectroscopy LK - https://researchspace.csir.co.za PY - 2004 SM - 0267-9477 T1 - Identification of molecules in graphite furnace by laser ionization time-of-flight mass spectrometry: sulfur and chlorine containing compounds TI - Identification of molecules in graphite furnace by laser ionization time-of-flight mass spectrometry: sulfur and chlorine containing compounds UR - http://hdl.handle.net/10204/2092 ER -