0162227 - UIACH-O 200047 RIV NL eng J - Journal Article
Matoušek, Tomáš - Dědina, Jiří
Fate of free selenium atoms in externally heated quartz tube atomizers for hydride generation atomic absorption spectometry and their reatomization at tube ends studied by means of the determination of longitudinal free atom distribution.
Spectrochimica Acta Part B: Atomic Spectroscopy. Roč. 55, - (2000), s. 545-557. ISSN 0584-8547. E-ISSN 1873-3565
R&D Projects: GA ČR GA203/98/0754; GA AV ČR KSK2055603
Subject RIV: CB - Analytical Chemistry, Separation
Impact factor: 2.608, year: 2000

Longitudinal distribution of Se free atoms in heated quartz tube hydride atomizers was studied under analytical conditions. The free atom decay rate is greatly enhanced at higher analyte concentrations, which is a source of calibration curvature. The presence of zones where once reacted atoms are reatomized at the tube ends was directly proven: the sensitivity is improved and calibration bending is attenuated. Recommendations concerning the quartz tube design and dimensions are given.
Permanent Link: http://hdl.handle.net/11104/0059546