Chemistry Reference
In-Depth Information
TABLE 7.1
Measured absorbances of the highest peaks of C
2n
H
2
in laser ablation
of graphite, suspended in solutions. The relative abundance of C
2n
H
2
obtained from known absolute absorption coefficients (log
e
) of the highest
peaks in hexane and methanol [5] are also given
Laser
Wavelength
(nm)
Target
Solvent
C
8
H
2
C
10
H
2
C
12
H
2
C
14
H
2
C
16
H
2
Graphite
Benzene
355
Absorbance 0.19
0.084
0.027
0.012
0.0019
532
0.13
0.048
0.021
0.0050
0.00094
1064
0.0025 0.0014 0.0015
0.00014 0
Toluene
355
0.15
0.079
0.04
0.014
0.003
532
0.069
0.035
0.02
0.007
0.002
1064
0.0042 0.0013 0.0017
0.0005
0
Hexane
266
Absorbance 0.23
0.011
0.0050
0.0019
0.00035
355
0.15
0.070
0.014
0.0017
0
532
0.14
0.056
0.010
0.00061 0
1064
0.031
0.0053 0
0
0
log
in
hexane
"
5.28
5.51
5.54
266
Relative
abundance
0.81
0.029
0.010
0.0040
0.00068
355
0.55
0.19
0.030
0.0035
0
532
0.50
0.15
0.021
0.0012
0
1064
0.11
0.014
0
0
0
Cyclohexane
266
Absorbance 0.17
0.013
0.0091
0.0034
0.00052
355
0.10
0.049
0.011
0.00064 0
532
0.078
0.026
0.0052
0.00037 0
1064
0.0091 0.0012 0
0
0
Methanol
266
Absorbance 0.25
0.0023 0.0013
0
0
355
0.22
0.066
0.011
0
0
532
0.15
0.067
0.0081
0
0
1064
0.059
0.020
0.00089 0
0
log
"
in
methanol
5.25
5.47
5.48
266
Relative
abundance
0.96
0.0069 0.0031
0
0
355
0.86
0.20
0.025
0
0
532
0.56
0.20
0.019
0
0
1064
0.23
0.061
0.0021
0
0
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