Geoscience Reference
In-Depth Information
Table 8.1 Component groups for gasoline based on C—number and main chemical composition
Structural class
Number of carbon atoms (C)
3
4
5
6
7
8
9
10
11
12
n-alkanes
1
2
3
4
7
Isoalkanes
5
6
n-alkenes
8
9
20
Isoalkenes
10
Cyclic alkanes
11
13
14
Cyclic alkenes
15
Monoaromatics
16
17
19
21
22
Diaromatics
23
24
Cyclohexane 12
Ethylbenzene 18
Reprinted with permission from Foster et al. (
2005
). Copyright 2005 American Chemical Society
40
35
30
25
20
15
10
Liquid
Vapor
5
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 17
18
19
20
21
22
23
24
Group #
Fig. 8.1 Liquid and vapor gasoline compositions. Reprinted with permission from Foster et al.
(
2005
). Copyright 2005 American Chemical Society
compounds, ranging from 3 to 12. The physicochemical properties are summarized
in Table
8.1
, and the compositional differences between each compartment and
those of the original gasoline mixture are given in Fig.
8.1
. These data provide an
overview of the multiple properties of a contaminant mixture; these properties
control its partitioning among the subsurface phases.
