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The determination of trace elements in oils

Bestimmung der Spurenelemente in Ölen

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Summary

A heavy oil distillate from an oil containing high sulphur (2.58% w/w) and nitrogen (0.36% w/w) and a high amount of vanadium, nickel, and iron (125.6 ppm) was examined. It had a relatively high content of the asphaltenes (5% w/w) and resins (28% w/w). Trace metals were determined by AAS. The oil was divided into three fractions and a residue by vacuum distillation. The relationship between the N, S, V, Ni and Fe content of the fractions and the boiling-temperature range of the fractions was investigated. The heavy oil distillate was demetallized, and oils before and after the demetallization process were compared in terms of V, Ni, Fe, asphaltenes and resins content.

Zusammenfassung

Das zur Untersuchung herangezogene Schweröl war durch einen hohen Gehalt an Schwefel (2,58 Gew.-%) und Stickstoff (0,36 Gew.-%) sowie an metallischen Elementen (V, Ni und Fe; insgesamt 125,6 Gew.-%) gekennzeichnet. Ein so hoher Gehalt an den genannten Elementen ist mit einem hohen Gehalt an Asphaltbestandteilen (5 Gew.-%) und Harz (28 Gew.-%) verbunden. Die Spurenelemente wurden mit AAS bestimmt. Das Öl wurde durch Vakuumdestillation in drei Fraktionen und den Rückstand geteilt. Die Abhängigkeit des Siedepunktes der Fraktionen von dem Gehalt an N, S, V, Ni und Fe wurde untersucht. Der Gehalt an V, Ni, Fe, Asphaltbestandteilen und Harz wurde dem Schweröl entzogen.

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Authors and Affiliations

  1. The Institute of Chemistry and Technology of Petroleum and Coal, Wrocław Technical University, Wrocław, Poland

    Jadwiga Więckowska

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  1. Jadwiga Więckowska
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Więckowska, J. The determination of trace elements in oils. Mikrochim Acta 77, 195–201 (1982). https://doi.org/10.1007/BF01237807

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  • DOI: https://doi.org/10.1007/BF01237807

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