Geology Reference
In-Depth Information
a
Analytical pyrolysis of
Rhabdopleura
5
1
4
8
2
9
6
3
11
7
10
*
-
-
+
m/z
85 + 83
-
+
+
-
+
-
+
+
-
+
-
Retention time
b
C
16
FA
Thermochemolysis of
Rhabdopleura
o
C
18:1
FA
o
Methylated short chain acids and
collagen derived products
C
16:1
FA
C
18
FA
C
14
FA
o
o
o
o
C
12
FA
C
16
FA
m/z
74+87
o
o
o
o
C
7
FA
o
o
o
o
C
18
FA
C
14
FA
o
C
15
FA
C
17
FA
o
C
12
FA
C
7
FA
o
o
o
o
o
o
o
o
o
Retention time
Fig. 9.1
Partial ion chromatogram showing (
a
) the pyrolysis-GC/MS analysis and (
b
) TMAH
pyrolysis/thermochemolysis of
Rhabdopleura
. The mass chromatogram
m/z
85 +83 reveals the
distribution of
n
-alkanes (+) and
n
- alkenes (−), and
m/z
74 + 87 that of fatty acyl moieties (CnFA/o).
Cn where n indicates the carbon chain length.
1
: phenol;
2
: methylphenol;
3
: ethylcyanobenzene;
4
: 2,5-diketopiperazine;
5
: indole;
6
: methylindole;
7
: trimethylpyrimidine;
8
: diketodipyrrole;
9
:
2,5-diketopiperazine;
10
: pyrrolidinopiperazine derivative;
11
: propylcyanobenzene; * contaminant
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