Methodology multiplecomponent analysis

1
Methodology multiple-component analysis
We have developed a fully integrated program of
rapid and inexpensive methods for hydrocarbon and
non-hydrocarbon analysis of crude oils and rock
extracts.
100 mgs Crude oil
C18 non end - capped SPE
e.g. Benzocarbazoles a, b and c in Miller
oil (N. Sea)
Aliphatic and Aromatic HCs
Polar Non-hydrocarbons
a

m/z 217
100

N
H


Agsilica SPE
c
GC-MS-SIM
b
N
H
Aliphatic Hydrocarbons
S Aromatic Hydrocarbons
N
H
0




Retention time
Bennett, B., et al., (2002) Org. Geochem. 33,
545-559.
Bennett, B. and Larter S.R. (2000) Anal. Chem.
72, 1039-1044.
2
Polar non-hydrocarbons identified in SPE isolates
(Magic fraction!)
Aromatic nitrogen and aromatic oxygen compounds
o-Cresol
m-Cresol
Phenol
Carbazole
Benzoccarbazole
Bennett B. et al., 1996 Anal. Chem. 68, 3697-3702.
Benzo(h) quinoline
Indole
Xanthone
Fluoren-9-one
Interfacially active Hydrogen bonding, carbonyl
groups, basic nitrogens Wide range of properties
etc. investigate crude oil / brine / rock
interactions (COBR)