TY - JOUR
T1 - Analysis of neutral nitrogen compounds in diesel oil by direct injection high-performance liquid chromatography-mass spectrometry-ultraviolet spectrometry methods
AU - Mao, John
AU - Pacheco, Carlos R.
AU - Traficante, Daniel D.
AU - Rosen, William
N1 - Funding Information:
The authorsw ould like to thank Petrobrasf or providing the oil samples. This project was funded by Petrobras, Springborn Laboratories, Inc. and NMR Concepts.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1994/10/28
Y1 - 1994/10/28
N2 - An analytical methodology has been developed for the direct analysis of neutral nitrogen compounds in diesel oil by HPLC with subsequent detection using MS and/or photodiode-array UV spectrometry. By diluting diesel oils with one volume of hexane, diesel samples could be injected directly onto an alumina analytical column and then eluted with a gradient mobile phase consisting of hexane and dioxane. Nitrogen compounds were selectively retained on the alumina column, eluted using LC, and then detected by particle beam LC-MS or UV at 254, 270 and 290 nm. Two Brazilian and one Arabian diesel distillates were investigated. Alkylcarbazoles and alkylindoles were identified as the major neutral nitrogen components. Structural identification was accomplished by combination of electron impact MS and UV analyses. The concentration of carbazoles and indoles was estimated using calibration standards of carbazole and indole, respectively.
AB - An analytical methodology has been developed for the direct analysis of neutral nitrogen compounds in diesel oil by HPLC with subsequent detection using MS and/or photodiode-array UV spectrometry. By diluting diesel oils with one volume of hexane, diesel samples could be injected directly onto an alumina analytical column and then eluted with a gradient mobile phase consisting of hexane and dioxane. Nitrogen compounds were selectively retained on the alumina column, eluted using LC, and then detected by particle beam LC-MS or UV at 254, 270 and 290 nm. Two Brazilian and one Arabian diesel distillates were investigated. Alkylcarbazoles and alkylindoles were identified as the major neutral nitrogen components. Structural identification was accomplished by combination of electron impact MS and UV analyses. The concentration of carbazoles and indoles was estimated using calibration standards of carbazole and indole, respectively.
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U2 - 10.1016/S0021-9673(94)89136-2
DO - 10.1016/S0021-9673(94)89136-2
M3 - Article
AN - SCOPUS:0028151289
SN - 0021-9673
VL - 684
SP - 103
EP - 111
JO - Journal of Chromatography A
JF - Journal of Chromatography A
IS - 1
ER -