Trying to obtain absorption coefficient from absorbance data. (HP 8453 Spectrometer). When a UV-VIS spectrometer measures absorbance as
A = log10(I0/I)
how does it determine that the loss in the intensity of light is only because of absorption?
Is absorbance a true measure of absorption?
What happens to the absorbance when a sample is mostly reflecting so most of the light is reflected back to the source rather than to go towards the sensor?
Do UV-VIS spectrometers have this reflectance correction?