Opto-acoustic spectroscopy of products of continuous photolysis of nitromethane

Abstract

THE photolysis of nitromethane has been carried out with both continuous (see ref. 1) and flash sources (see ref. 2), but for continuous photolysis no concurrent spectroscopy has been reported. This is in general true of most photolysis experiments, since the steady-state concentration of intermediates produced by continuous sources is usually insufficient to record spectra without depending on some matrix isolation procedure. We report here on gas phase continuous wave photolysis experiments using opto-acoustic detection of the energy absorbed by intermediates from a continuous wave (CW) tunable dye laser3. This allowed the detection of intermediate concentrations of 1013 mol cm−3. Opto-acoustic detection was discovered by Bell4 nearly a century ago, but was recently revived as a means of monitoring low concentrations of pollutant molecules5,6. In our experiments the intermediates act as the ‘pollutant’ molecules to be detected.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Honda, K., et al., Bull. chem. Soc. Japan, 45, 3534 (1972).

  2. 2

    Napier, I. M., and Norrish, R. G. W., Proc. R. Soc., 299, 317 (1967).

  3. 3

    Marinero, E. E., Angus, A. M., and Colles, M. J., Opt. Commun., 14, 223 (1975).

  4. 4

    Bell, A. G., Phil. Mag., 11, 510 (1881).

  5. 5

    Angus, A. M., Marinero, E. E., and Colles, M. J., Opt. Commun., 14, 226 (1975).

  6. 6

    Kreuzer, L. B., J. appl. Phys., 42, 2934 (1971).

  7. 7

    Bielski, B. H., and Timmons, R. B., J. phys. chem., 68, 342 (1964).

  8. 8

    Dixon, R. N., and Kroto, H. W., Proc. R. Soc., 283, 423 (1965).

  9. 9

    Dalby, F. W., Can. J. Phys., 36, 1336 (1958).

  10. 10

    Phillips, L., and Shaw, R., 10th Symp. Combustion, Connbridge, 453 (1964).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.