Condensation of analyte vapor species in graphite furnace atomic absorption spectrometry |
| |
| Institution: | 1. Department of Chemistry, St. Petersburg State University, St. Petersburg 198904, Russia;2. Ottawa-Carleton Chemistry Institute, Department of Chemistry, Carleton University, Ottawa, Ontario K1S 5B6, Canada;3. Institute for National Measurement Standards, National Research Council of Canada, Ottawa, Ontario K1A OR6, Canada;4. Department of Chemistry, Iowa State University, Ames, IA, USA;1. Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, China;2. School of Chemistry and Chemical Engineering, Anhui University, Hefei 230039, China;1. Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China;2. University of Science and Technology of China, Hefei 230026, PR China;1. DEP, FMPI, Comenius University, Mlynská dolina F2, 842 48 Bratislava, Slovakia;2. Aalto University, Dept. of Applied Physics, P.O. Box 11100, 00076 Aalto, Finland;3. Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411 Tartu, Estonia;4. INFLPR 409, Magurele, Jud Ilfov 077125, Bucharest, Romania;5. DIFFER, De Zaale 20, NL-5612 AJ Eindhoven, Netherlands;6. VTT, P.O. Box 1000, 02044 VTT, Finland |
| |
| Abstract: | A shadow spectral digital imaging technique (SSDI) with charge coupled device (CCD) camera detection was used to investigate the spatial and temporal distribution of condensation clouds of analyte species generated in a graphite furnace during the atomization of 5–40-μg masses of metals. Complex, non-uniform structures of aerosol species located away from both the graphite tube axis and walls are prevalent. Species giving rise to observed signals are likely clusters of metals in the case of Ag, Au and Pd, and oxide aerosols for elements such as Al, Ca and Mg. Source scatter often arises during the atomization of relatively large masses of analytes (or during the atomization of real samples containing high concentrations of concomitant matrix species) in the graphite furnace due to such aerosol formation. The SSDI technique is an extremely useful aid to the elucidation of this phenomenon and imaging at several wavelengths using both line and continuum sources in combination with (thermal, incandescent) emission from these structures permits a more complete picture to be developed. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
