An investigation of atom collection phenomena in the atomic absorption spectrometry of copper
| Autor: | A.M. Ure, T.S. West, J. Khalighie |
|---|---|
| Rok vydání: | 1979 |
| Předmět: |
Aqueous solution
Flame test Analytical chemistry chemistry.chemical_element Hydrochloric acid Biochemistry Copper Analytical Chemistry law.invention Coolant chemistry.chemical_compound fluids and secretions chemistry law Atom Environmental Chemistry Tube (fluid conveyance) Atomic absorption spectroscopy Spectroscopy |
| Zdroj: | Analytica Chimica Acta. 107:191-200 |
| ISSN: | 0003-2670 |
| DOI: | 10.1016/s0003-2670(01)93209-x |
| Popis: | Analyte collection within a premixed air—acetylene flame for atomic absorption spectometric measurements is described. Copper species of the aspirated solution are collected for fixed periods of time on a water-cooled silica tube positioned within the flame, with the flame burning normally. At the end of a specified time, collection is stopped, the coolant water is quickly flushed out of the silica tube, and the copper species that evaporate into the analyzing radiation beam in the flame, and are atomized, are measured by atomic absorption at 324.8 nm. Aqueous and hydrochloric acid solutions were examined, and the effects of varying flame conditions, positions of the collector and signal measurement, etc., are discussed. A characteristic concentration of 0.0008 ppm was obtained for 0.01 ppm Cu 2+ solution. With the same equipment in the absence of a collector tube, the value was 0.04 ppm. The presence of a 10,000-fold amount of Al 3+ enhanced the sensitivity of the collection technique slightly. |
| Databáze: | OpenAIRE |
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