Vaporization of silicon and germanium as molecular species in electrothermal atomizers

Atomic Absorption, Atomic Emission, and Flame Emission Spectrometry

“…Arruda et al (378) reviewed the direct analysis of foods as slurries by atomic spectrometric techniques, and particularly ETAAS. Tittarelli and co-workers studied the formation of gas-phase molecular species when slurries of pure compounds of Si and Ge (379) and Pb and Sn (380) were vaporized. All the elements formed the monoxides, and in the presence of sulfur-containing compounds the monosulfides, in competition with free atoms.…”

Identification of molecules in graphite furnace by laser ionization time-of-flight mass spectrometry: sulfur and chlorine containing compounds

“…ETV with a continuous source of radiation and an ultraviolet (UV) multichannel detector spectrometer was employed recently for the systematic study of UV absorption spectra of inorganic compounds. [1][2][3][4][5][6][7][8][9][10][11][12][13] The setup was initially developed by Tittarelli et al, [1][2][3][4] and later improved by Daminelli et al [5][6][7] Investigations of alkaline earth fluorides and chlorides, [8][9][10] indium nitrate and Group 3 halides, 11 sulfides, sulfates and sulfur 12,13 were also carried out with this technique. The main objective of these studies was to identify species responsible for the absorption of the UV radiation.…”

“…Choi et al 17 studied the multiphoton ionization and dissociation dynamics of methyl iodide clusters when 266 and 355 nm ionization and a reflectron TOF-MS were used. They detected CH 3 1 , I 1 and I 2 1 fragments at 266 nm, and considerable amounts of parent ion (CH 3 I 1 ) and methyl rich fragments ((CH 3 I) n CH 3…”