Geology Reference
In-Depth Information
a
Chitin
m/z
83+85
C
3
Py
C
3
P
C
3
Id
C
4
Id
C
2
Id
C
2
Py
C
4
P
C
1
P
C
1
Py
b
Cockroach cuticle
m/z
83+85
C
15
C
16
FA
X
X
X
C
9
X
X
X
X
X
X
X
X
A
C
18
FA
C
2
Py
A
C
3
Py
C
1
P
C
16
FA
C
2
P
C
3
P
C
1
Py
A
C
2
Id
C
3
Id
C
4
Id
C
2
Pyr
C
1
In
B
1
B
2
c
Shrimp cuticle
m/z
83+85
C
15
X
X
X
C
16
FA
X
X
X
C
9
X
X
X
X
X
A
C
2
Py
C
2
P
C
3
Py
A
C
1
In
C
2
Id
C
3
Id
C
1
P
C
3
P
C
16
FA
C
2
Pyr
B
1
A
B
2
Retention time
Fig. 8.2
Partial pyrolysis-GC/MS chromatograms of (
a
) matured chitin, (
b
) matured cockroach
cuticle and (
c
) matured shrimp cuticle.
Bn
: benzene derivatives (n refers to the number of carbon
atoms in the alkyl component),
C
1
In
: methyl indole;
A
: amide derivative (primarily C
16
and C
18
derivatives;
C
n
Py
: pyridine pyrolysis products, where n is the number of carbon atoms in the alkyl
substituent;
P
: phenol derivative;
Id
: alkyl indenes. (Inset mass chromatograms
m/z
83 + 85 reveal
the presence of
n
-alkane/alkenes.) The analysis time was 55 min
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