ABSTRACT
Polystyrene (Solid Film)<xref ref-type="fn" rid="tab33_1fn1"> <sup>a</sup> </xref>: 3300–600 cm<sup>−1</sup>
Band No.
Wavenumber (Vac.)cm −1
1
3027.1 ± 0.3
2
2924 ± 2
3
2850.7 ± 0.3
4
1944.0 ± 1
5
1871.0 ± 0.3
6
1801.6 ± 0.3
7
1601.4 ± 0.3
8
1583.1 ± 0.3
9
1181.4 ± 0.3
10
1154.3 ± 0.3
11
1069. 1 ± 0.3
12
1028.0 ± 0.3
13
906.7 ± 0.3
14
698.9 ± 0.5
Films from commercial sources of polystyrene frequently exhibit strong interference patterns; such films should be slightly bent or otherwise deformed before using for calibration purposes.
REFERENCE: IUPAC tables for the calibration of infra-red spectrometers, Butterworths, Washington, D.C., 1961. With permission. Calibration Lines, Hg LampGreen Hg line @ 18,312.6
ν = 1 8 , 3 1 2 . 6 N − B https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203742433/53e9912e-dfc3-42b1-91b1-4eaf447a0f76/content/eq127.tif"/>
N = grating order
B = air-to-vacuum correction
N = 5
3661.5 cm−1
6
3051.3
7
2615.4
8
2288.5
9
2034.1
30
6 10.2
40
457.6
50
366.1
60
305.1
70
261.5
Spectrum of polystyrene film for calibration. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203742433/53e9912e-dfc3-42b1-91b1-4eaf447a0f76/content/fig33_1.tif"/> <target id="page_510" target-type="page">510</target>Spectrum of indene-camphor-cyclohexanone mixture for calibration. Segment A (4000 to 1500 cm<sup>−1</sup>) run on Solution I, 0.2-mm cell; Segment B (1800 to 600 cm<sup>−1</sup>) run on Solution I, 0.025-mm cell; Segment C (600 to 200 cm<sup>−1</sup>) run on Solution II, 0.1-mm cell. Solution I: indene, 98.4%; camphor, 0.8%; cyclohexanone, 0.8%, by weight. Solution II: indene, 33.3%; camphor, 33.3%; cyc!ohexanone, 33.3%, by weight. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203742433/53e9912e-dfc3-42b1-91b1-4eaf447a0f76/content/fig33_2.tif"/> (Courtesy of Perkin-Elmer Corporation, Norwalk, CT). <target id="page_511" target-type="page">511</target>Absorption Maxima Recommended for Calibration PurposesBand
v(Vac)·cm −1
Cell(mm)
1
3927.2 ± 0.56
0.2
2†
3901.6 ± 0.64
0.2
3‡
3798.9 ± 0.86
0.2
4‡
3745.2 ± 0.72
0.2
5‡
3660.6 ± 0.98
0.2
6
0.2
7
0.2
8‡
3297.8 ± 1.06
0.2
9†
3139.5 ± 0.44
0.2
10†
3110.2 ± 0.44
0.2
11‡
3068.9 ± 0.66
0.025
12†
3025.4 ± 0.26
0.025
13†
3015.3 ± 0.52
0.025
14†
0.025/0.2
15‡
2887.6 ± 0.82
0.025
16†
0.2
17
2770.9 ± 0.44
0.2
18†
0.2
19
2673.3 ± 0.56
0.2
20†
2622.3 ± 0.24
0.2
21
2598.4 ± 0.16
0.2
22
0.2
23
2525.5 ±0.32
0.2
24†
0.2
25†
0.2
26‡
2439.1 ± 0.24
0.2
27†
0.2
28
2305.1 ± 0.42
0.2
29†
2271.4 ± 0.08
0.2
30†
2258.7 ± 0.36
0.2
31
0.2
32
0.2
33
2172.8 ± 0.30
0.2
34
2135.8 ± 0.68
0.2
35
2113.2 ± 0.28
0.2
36
2090.2 ± 0.40
0.2
37‡
2049.1 ± 0.82
0.2
38† ‡
2027.0 ± 0.42
0.2
39
1943.1 ± 0.52
0.2
40
1915.3 ± 0.30
0.2
41
1885.1 ± 0.42
0.2
42
1856.9 ± 0.52
0.2
43‡
1826.8 ± 0.56
0.2
44
1797.7 ± 0.50
0.2
45
1741.9 ± 0.50
0.2
46‡
1739.2 ± 0.78
0.2
47
1713.4 ± 0.66
0.2
48‡
1684.9 ± 1.14
0.2
49‡
1661.8 ± 0.64
0.2
50
1609.8 ± 0.42
0.025
51
1587.5 ± 0.26
0.2
52‡
1574.5 ± 0.62
0.2
53
1553.2 ± 0.20
0.2
54†
0.2
55‡
1457.3 ± 0.38
0.025
56‡
1393.5 ± 0.76
0.025
57
1361.1 ± 0.16
0.025
58‡
1332.8 ± 0.42
0.025
59
1312.4 ± 0.18
0.025
60
1288.0 ± 0.08
0.025
61† ‡
1264.0 ± 0.12
0.025
63
1205.1 ± 0.20
0.025
64
1166.1 ± 0.08
0.025
65†
0.025
66
1122.4 ± 0.32
0.025
67†
0.025
68
1067.7 ± 0.30
0.025
69
1018.5 ± 0.32
0.025
70†
0.025
71
947.2 ± 0.36
0.025
72
942.4 ± 0.38
0.025
73
914.7 ± 0.16
0.025
73
914.7 ± 0.16
0.025
74
861.3 ± 0.14
0.025
75
830.5 ± 0.32
0.025
76
765.3 ± 0.22
0.012
77
730.3 ± 0.22
0.012
78
718.1 ± 0.24
0.012
79†
692.6 ± 0.56
0.012
80‡
592.1 ± 0.5
0.025
81
551.3 ± 1.0
0.025
82
419.9 ± 1.0
0.025
83
393.4 ± 1.0
0.025
84
381.4 ± 1.0
0.025
NOTES: (1) Variation given represents twice standard deviation. (2) Omitted band positions have been found unreliable for calibration.This band may not be resolved by the smaller types of prism spectrometers.
Because of asymmetry, superposition on atmospheric water vapor or carbon dioxide bands, or for other reasons, these bands are less suited for accurate calibration.
