Spectrum of a toluene sample is obtained with the ATR-FTIR measurement on a ZnSe crystal slide. A peak at 3030 cm-1 from ph-H stretching and a peak at 700 cm-1 from ph-H out-of-plane bending were recorded. You need to compare the peak intensity ratio of these two peaks with the peak intensity ratio of the same two peaks of toluene spectrum obtained with a transmission liquid cells. How do you need to “correct” the ATR-FTIR spectrum of toluene before you can compare them? Show calculations please.