Geology Reference
In-Depth Information
Table 11.3.3
Geochemical biomarker analytes, abbreviations, and general classifications.
Analytes
Abbreviation
Saturated rings
Total hopanes
Total steranes
C23 tricyclic terpane
t23
3
X
C24 tricyclic terpane
t24
3
X
C25 tricyclic terpane
t25
3
X
C24 tetracyclic terpane
te24
4
X
C26 tricyclic terpane-22
S
t26S
3
X
C26 tricyclic terpane-22
R
t26R
3
X
C28 tricyclic terpane-22
S
t28S
3
X
C28 tricyclic terpane-22
R
t28R
3
X
S
C29 tricyclic terpane-22
t29S
3
X
R
C29 tricyclic terpane-22
t29R
3
X
18a-22,29,30-Trisnorneohopane
Ts
5
X
C30 tricyclic terpane-22
S
t30S
5
X
C30 tricyclic terpane-22
R
t30R
5
X
17a(
H
)-22,29,30-Trisnorhopane
Tm
5
X
17a/b,21b/a 28,30-Bisnorhopane
BNH
5
X
17a(
H
),21b(
H
)-25-Norhopane
25N
5
X
30-Norhopane
NH
5
X
18a(
H
)-30-Norneohopane-C29Ts
C29Ts
5
X
17a(
H
)-Diahopane
X
5
X
30-Normoretane
M29
5
X
18a(
H
) and 18b(
H
)-Oleananes
OL
5
X
Hopane
HOP
5
X
Moretane
M
5
X
30-Homohopane-22
S
H31S
5
X
30-Homohopane-22
R
H31R
5
X
30,31-Bishomohopane-22
S
H32S
5
X
30,31-Bishomohopane-22
R
H32R
5
X
30,31-Trishomohopane-22
S
H33R
5
X
30,31-Trishomohopane-22
R
H33S
5
X
Tetrakishomohopane-22
S
H34R
5
X
Tetrakishomohopane-22
R
H34S
5
X
Pentakishomohopane-22
S
H35S
5
X
R
Pentakishomohopane-22
H35R
5
X
H
H
S
13b(
),17a(
)-20
-Diacholestane
d27S
4
X
H
H
R
13b(
),17a(
)-20
-Diacholestane
d27R
4
X
13b,17a-20
S
-Methyldiacholestane
d28S
4
X
14a(
H
),17a(
H
)-20
S
-Cholestane
aa27S
4
X
14a(
H
),17a(
H
)-20R-Cholestane
aa27R
4
X
13b,17a-20
R
-Ethyldiacholestane
d29R
4
X
13a,17b-20
S
-Ethyldiacholestane
d29S
4
X
14a,17a-20
S
-Methylcholestane
aa28S
4
X
14a,17a-20
R
-Methylcholestane
aa28R
4
X
14a(
H
),17a(
H
)-20
S
-Ethylcholestane
aa29S
4
X
14a(H),17a(H)-20R-Ethylcholestane
aa29R
4
X
14b(
H
),17b(
H
)-20
R
-Cholestane
bb27R
4
X
14b(
H
),17b(
H
)-20
S
-Cholestane
bb27S
4
X
14b,17b-20
R
-Methylcholestane
bb28R
4
X
14b,17b-20
S
-Methylcholestane
bb28S
4
X
14b(
H
),17b(
H
)-20
R
-Ethylcholestane
bb29R
4
X
14b(
H
),17b(
H
)-20
S
-Ethylcholestane
bb29S
4
X
Count
50
33
17
Note: The geochemical biomarkers fall into many classes including the triterpanes and steranes. The nominal detection limits are 10 ng/L in
water and 2 µg/kg in solid samples using GC/MS instrumentation.
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