Mechanisms of graphite furnace atomization of aluminum by molecular beam sampling mass spectrometry

Journal Article · Tue Dec 15 04:00:00 EST 1987 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00151a012· OSTI ID:5616489

Styris, D L; Redfield, D A

Mechanisms that control atomization of aluminum and its modification by magnesium in the graphite furnace are investigated by the molecular beam sampling technique. Oxides and numerous carbides of aluminum are observed to appear with the free aluminum. These molecular species are precursors to free aluminum only when magnesium is present. It appears that release of adsorbed aluminum is dependent on depletion of the gas-phase magnesium oxide. Magnesium also inhibits loss of aluminum as the dihydroxide during the thermal pretreatment steps. Reactions contributing to these observations are presented and the influence of the surface is discussed.

• Research Organization: Pacific Northwest Lab., Richland, WA
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5616489
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 59:24; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM
ATOMIZATION
BEAMS
CHALCOGENIDES
CHEMICAL ANALYSIS
DATA
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MASS SPECTROSCOPY
METALS
MOLECULAR BEAMS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SAMPLING
SPECTROSCOPY