Determination of Sulfur in Petroleum Coke Combining Closed Vessel Microwave-Induced Combustion and Inductively Coupled Plasma-Optical Emission Spectrometry

Autor:	Elizabeth Marques Moreira, Cristiano K. Giesbrecht, Mauricio S. Alencar, José N. G. Paniz, Paola A. Mello, Erico M.M. Flores, Valderi L. Dressler
Rok vydání:	2008
Předmět:	Chemistry Biochemistry (medical) Clinical Biochemistry Ion chromatography Analytical chemistry Petroleum coke chemistry.chemical_element Combustion Biochemistry Sulfur Analytical Chemistry law.invention Ignition system Certified reference materials Physics::Plasma Physics law Electrochemistry Physics::Chemical Physics Inductively coupled plasma Spectroscopy Microwave
Zdroj:	Analytical Letters. 41:1623-1632
ISSN:	1532-236X 0003-2719
DOI:	10.1080/00032710802122289
Popis:	A new procedure based on closed vessel Microwave-Induced Combustion (MIC) technique is proposed for the decomposition of petroleum coke and further determination of sulfur by Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES). The procedure is based on sample ignition by microwave radiation using closed quartz vessels pressurized with oxygen and use of NH4NO3 as an ignition aid. The nature and concentration of absorbing/refluxing solution were studied, as well as the operational parameters related to MIC technique. Results were compared with those obtained by conventional wet digestion in closed vessels, certified reference materials (agreement was better than 98%), and also using ion chromatography for S determination.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4e8144a06ab5f38d4e7776719aa2a9cc https://doi.org/10.1080/00032710802122289 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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