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Table B.1

Peak positions and FWHM of the acetaldehyde CH3 rocking + CC stretching + CCO bending mode at 8.909 μm.

Mixture Temperature λpeak,−baseline λpeak,−matrix FWHM



(K) (cm−1) (μm) (cm−1) (μm) (cm−1) (μm)
Pure 15 1122.4 8.9097 13.0 0.1032
CH3CHO:H2O 1116.1 8.9598 1116.1 8.9598
1127.7 8.8678 1127.7 8.8678 14.3 0.1121
CH3CHO:CO 1121.9 8.9136 5.0 0.0394
CH3CHO:CH3OH
CH3CHO:CO:CH3OH
CH3CHO 30 1122.4 8.9097 13.0 0.1031
CH3CHO:H2O 1117.5 8.9482 1117.5 8.9482
1126.7 8.8754 1126.7 8.8754 14.3 0.1124
CH3CHO:CO 1121.9 8.9136 5.5 0.0439
CH3CHO:CH3OH
CH3CHO:CO:CH3OH
CH3CHO 70 1122.4 8.9097 12.5 0.0993
CH3CHO:H2O 1118.0 8.9443 1118.0 8.9443
1124.8 8.8906 1124.8 8.8906 16.3 0.1290
CH3CHO:CO
CH3CHO:CH3OH
CH3CHO:CO:CH3OH
CH3CHO 90 1119.0 8.9366 6.4 0.0513*
1120.9 8.9212
CH3CHO:H2O 1118.0 8.9443 1118.0 8.9443
1124.3 8.8945 1124.3 8.8945 16.0 0.1268*
CH3CHO:CO
CH3CHO:CH3OH
CH3CHO:CO:CH3OH
CH3CHO 110 1118.5 8.9405 6.1 0.0485*
1120.9 8.9212
CH3CHO:H2O 1118.0 8.9443 1118.0 8.9443
1124.3 8.8945 1124.3 8.8945 16.0 0.1274*
CH3CHO:CO
CH3CHO:CH3OH
CH3CHO:CO:CH3OH
CH3CHO 120 1118.5 8.9405 5.9 0.0473
1120.9 8.9212
CH3CHO:H2O 1117.5 8.9482 1117.5 8.9482 16.2 0.1291
1122.4 8.9097 1122.4 8.9097
CH3 CHO:CO
CH3 CHO:CH3OH
CH3 CHO:CO:CH3OH
CH3 CHO 140
CH3 CHO:H2O 1116.1 8.9598 1116.1 8.9598 10.0 0.0804
CH3 CHO:CO
CH3 CHO:CH3OH
CH3 CHO:CO:CH3OH
CH3 CHO 160
CH3 CHO:H2O 1116.6 8.9559 1116.6 8.9559 10.1 0.0813
CH3 CHO:CO
CH3 CHO:CH3OH
CH3 CHO:CO:CH3OH

Notes. (*) FWHM result of two or more blended peaks.

(**)

FWHM uncertain/not determined owing to uncertain matrix subtraction.

(***)

Transition likely saturated.

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