Waters 2489, Overview And Maintenance Manual

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June 11, 2015, 715004752 Rev. A
Page 150
*Willard, H. H. and others. Instrumental Methods of Analysis , 6th ed. Litton Educational Publishing, Inc., 1981.
Reprinted by permission of Wadsworth Publishing Co., Belmont, California, 94002.
Allene —(C=C)2—
(acyclic) 210-230 21,000
Allene —(C=C)3— 260 35,000
Allene —(C=C)4— 300 52,000
Allene —(C=C)5— 330 118,000
Allene —(C=C)2—
(alicyclic) 230-260 3000-8000
Ethylenic/
Acetylenic
C=C—C
≡
C 219 6,500
Ethylenic/
Amido
C=C—C=N 220 23,000
Ethylenic/
Carbonyl
C=C—C=O 210-250 10,000-
20,000
Ethylenic/
Nitro
C=C—NO2 229 9,500
Table C–4: Electronic absorption bands of representative chromophores*:
Chromophore Chemical
configuration
λ
max
(nm)
∈
max
(L/m/cm
)
λ
max
(nm)
∈
max
(L/m/c
m)