Flame-in-gas-shield and miniature diffusion flame hydride atomizers for atomic fluorescence spectrometry: optimization and comparison

0444055 - ÚIACH 2016 RIV NL eng J - Journal Article
Marschner, Karel - Musil, Stanislav - Dědina, Jiří
Flame-in-gas-shield and miniature diffusion flame hydride atomizers for atomic fluorescence spectrometry: optimization and comparison.
Spectrochimica Acta Part B: Atomic Spectroscopy. Roč. 109, JUL (2015), s. 16-23. ISSN 0584-8547. E-ISSN 1873-3565
R&D Projects: GA ČR GA14-23532S
Grant - others:GA AV ČR(CZ) M200311202
Institutional support: RVO:68081715
Keywords : hydride generation * arsenic * atomic fluorescence spectrometry
Subject RIV: CB - Analytical Chemistry, Separation
Impact factor: 3.289, year: 2015

A detailed optimization of relevant experimental parameters of two hydride atomizers for atomic fluorescence spectrometry: flame-in-gas-shield atomizer with a two-channel shielding unit and a standard atomizer for atomic fluorescence spectrometry, miniature diffusion flame, was performed. Arsine, generated by the reaction with NaBH4 in a flow injection arrangement, was chosen as the model hydride. Analytical characteristics of both the atomizers (sensitivity, noise, limits of detection) were compared. Under optimum conditions sensitivity obtained with flame-in-gas-shield atomizer was approximately twice higher than with miniature diffusion flame.
Permanent Link: http://hdl.handle.net/11104/0246652