Serviços Personalizados
Journal
Artigo
Indicadores
- Citado por SciELO
- Acessos
Links relacionados
- Citado por Google
- Similares em SciELO
- Similares em Google
Compartilhar
CT&F - Ciencia, Tecnología y Futuro
versão impressa ISSN 0122-5383versão On-line ISSN 2382-4581
Resumo
CARBOGNANI, Lante; DIAZ-GOMEZ, Lina; OLDENBURG, Thomas B. P e PEREIRA-ALMAO, Pedro. DETERMINATION OF MOLECULAR MASSES FOR PETROLEUM DISTILLATES BY SIMULATED DISTILLATION. C.T.F Cienc. Tecnol. Futuro [online]. 2012, vol.4, n.5, pp.43-55. ISSN 0122-5383.
Determination of Molecular Mass (MM) for petroleum distillates is explored for selected samples via High Temperature Simulated Distillation (HTSD). MM is determined as a by-product from routine HTSD carried out using open wall capillary columns coated with apolar stationary phases. No sample pre-separation into hydrocarbon group-types is required. Determined MM values were validated with results achieved via correlations based on specific gravity and refractive index. Furthermore, determined MM with the former methodologies were found to match mass spectrometric determinations carried out for the basic polar components present within the studied samples. Moreover, HTSD analyzed petroleum distillates are proposed as more representative calibration standards for size exclusion chromatographic separations, thus opening the feasibility of extrapolating MM determination for non volatile petroleum residua.
Palavras-chave : Molecular mass determination; Simulated distillation; Petroleum distillates; ndM; Mass spectrometry.