- A fast and simple method for sulfur quantification in crude oils was developed by using high-resolution continuum source graphite furnace molecular absorption spectrometry (HR-CS-GFMAS). For this, heavy crude oil samples were prepared as microemulsion (shake) and injected into a graphite furnace (shut). Finally, the concentration of sulfur was determined by monitoring in situ the transient molecular spectrum of GeS at wavelength 295.205nm after adding a germanium solution as molecular forming agent (and go). Zirconium dioxide in the form of nanoparticles (45–55nm) was employed as a permanent modifier of the graphite furnace. Calibration was done with an aqueous solution standard of ammonium sulfate, and a characteristic mass (m0) of 7.5ng was achieved. The effectiveness of the proposed method was evaluated analizing, ten heavy crude oil samples with Sulfur amounts ranging between 0.3 and 4.5% as well as two NIST standard reference materials, 1620c and 1622e. Results were compared withA fast and simple method for sulfur quantification in crude oils was developed by using high-resolution continuum source graphite furnace molecular absorption spectrometry (HR-CS-GFMAS). For this, heavy crude oil samples were prepared as microemulsion (shake) and injected into a graphite furnace (shut). Finally, the concentration of sulfur was determined by monitoring in situ the transient molecular spectrum of GeS at wavelength 295.205nm after adding a germanium solution as molecular forming agent (and go). Zirconium dioxide in the form of nanoparticles (45–55nm) was employed as a permanent modifier of the graphite furnace. Calibration was done with an aqueous solution standard of ammonium sulfate, and a characteristic mass (m0) of 7.5ng was achieved. The effectiveness of the proposed method was evaluated analizing, ten heavy crude oil samples with Sulfur amounts ranging between 0.3 and 4.5% as well as two NIST standard reference materials, 1620c and 1622e. Results were compared with those obtained by routine ICP-OES analysis, and no statistical relevant differences were found.…
MetadatenAutor*innen: | Carlos Enrique Abad AndradeORCiD, S. Florek, H. Becker-Ross, M.-D. Huang, F. Lopez-Linares, L. Poirier, Norbert JakubowskiORCiD, Sebastian RecknagelORCiD, Ulrich PanneORCiD |
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Dokumenttyp: | Zeitschriftenartikel |
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Veröffentlichungsform: | Verlagsliteratur |
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Sprache: | Englisch |
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Titel des übergeordneten Werkes (Englisch): | Spectrochimica Acta Part B |
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Jahr der Erstveröffentlichung: | 2019 |
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Organisationseinheit der BAM: | 1 Analytische Chemie; Referenzmaterialien |
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| 1 Analytische Chemie; Referenzmaterialien / 1.6 Anorganische Referenzmaterialien |
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| P Präsident |
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| P Präsident / P.0 Präsident und andere |
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Verlag: | Elsevier B.V. |
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Verlagsort: | Amsterdam, Netherlands |
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Jahrgang/Band: | 160 |
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Erste Seite: | 105671 |
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DDC-Klassifikation: | Naturwissenschaften und Mathematik / Chemie / Analytische Chemie |
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| Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik |
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| Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Sanitär- und Kommunaltechnik; Umwelttechnik |
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Freie Schlagwörter: | Germanium sulfide; HR-CS-MAS; Heavy crude oil; Microemulsion; Sulfur |
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Themenfelder/Aktivitätsfelder der BAM: | Chemie und Prozesstechnik |
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| Chemie und Prozesstechnik / Chemische Charakterisierung und Spurenanalytik |
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| Energie |
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| Umwelt |
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DOI: | 10.1016/j.sab.2019.105671 |
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ISSN: | 0584-8547 |
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Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
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Datum der Freischaltung: | 26.08.2019 |
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Referierte Publikation: | Ja |
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Datum der Eintragung als referierte Publikation: | 18.11.2019 |
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