Geoscience Reference
In-Depth Information
Table 16.7 Comparisons of alkylphenol concentrations (mg/L), determined by RP-HPLC-ED after isolation by SPE of Miller oil, equilibrated oils at 25 C
and 125 C, and corresponding water samples (Bennett and Larter
1997
)
Compounds
Original
Equilibrated
25 C equilibrated
Percentage
Equilibrated
125 C equilibrated
Percentage
Sum
1
Sum
1
Miller oil
Oil
Water
Recovery
Oil
Water
Recovery
1
Phenol
2.92
1.72
1.117
2.79
96
1.51
1.37
2.88
99
2
m-cresol
1.98
1.42
11.35
1.77
89
1.35
0.55
1.88
95
3
p-cresol
2.34
1.59
0.38
1.97
84
1.51
0.64
2.15
92
4
o-cresol
8.82
6.94
1.16
7.10
80
6.81
1.81
8.62
98
3,5-DMP
a
5
1.90
2.04
0.15
2.19
115
2.01
0.30
2.31
122
3,4-DMP
a
6
1.55
1.34
0.08
1.42
92
1.08
0.18
1.26
81
7
2,5-DMP
2.37
2.49
0.16
2.65
112
2.86
0.21
3.07
130
2,3-DMP
a
8
3.75
3.00
0.19
3.19
85
2.21
0.36
2.57
69
9
2,4-DMP
6.94
7.63
0.36
7.99
115
6.64
0.63
7.27
105
10
2,6-DMP
6.77
6.69
0.20
6.89
102
5.09
0.29
5.38
79
Ratios
P/(o- ? m- ? p-)
0.22
0.17
0.57
0.26
0.16
0.46
0.23
o-/(m- ? p-)
2.04
2.31
1.59
1.90
2.38
1.52
2.14
a
Coelution
of compounds
determined
by
cochromatography
with
authentic
standards:
3,5-DMP ? 4-ethylphenol;
3,4-DMP ? 3-ethylphenol;
2,3-
DMP ? 2-ethylphenol
1
Sum of concentrations in equilibrated oil and corresponding water. Reprinted from Bennett and Larter (
1997
). Copyright 1997 with permission of Elsevier
