Seeming a "oil" has a lot of C-H alkyl bonds, the 3000 cm-1 waveband would probably be of interest to you.
3000cm-1 = ~ 3400nm
(10E6 / wavenumber in cm-1 = wavelength in nm).
There are mid-IR diodes available for this.
Seeming a "oil" has a lot of C-H alkyl bonds, the 3000 cm-1 waveband would probably be of interest to you.
3000cm-1 = ~ 3400nm
(10E6 / wavenumber in cm-1 = wavelength in nm).
There are mid-IR diodes available for this.