Microwave-assisted solid sampling system for Hg determination in polymeric samples using FF-AAS
| Autor: | Matheus F. Pedrotti, Alessandra S. Henn, Fabio A. Duarte, José N. G. Paniz, Erico M.M. Flores, Angelica C. Frohlich, Cezar A. Bizzi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science 010401 analytical chemistry Analytical chemistry 02 engineering and technology Polymer 021001 nanoscience & nanotechnology Combustion 01 natural sciences 0104 chemical sciences Analytical Chemistry law.invention Microcrystalline cellulose Ignition system chemistry.chemical_compound chemistry law Pellet 0210 nano-technology Atomic absorption spectroscopy Quartz Spectroscopy Microwave |
| Zdroj: | Microchemical Journal. 147:463-468 |
| ISSN: | 0026-265X |
| DOI: | 10.1016/j.microc.2019.03.051 |
| Popis: | In this work, a new portable device based on a monomode microwave applicator was developed and applied for microwave-assisted solid sampling analysis coupled to flame furnace atomic absorption spectrometry (MW-SS-FF-AAS). As an example of application, Hg was determined in polymer samples in order to demonstrate the feasibility of the proposed system. Polymeric samples were weighed directly on a quartz boat, containing a microcrystalline cellulose pellet wetted with 6 mol L−1 NH4NO3 solution, which was introduced into the microwave system for the combustion step. Oxygen flowed continuously through the quartz tube for sample combustion, as well as to carry the combustion products to the flame furnace (FF) atomizer. Microwave irradiation was kept on up to sample ignition (generally |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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