Please let me know the procedure of taking FTIR of a liquid sample using KBr pellet. You are welcome if you know the way by using different type of pellet (like NaCl) as well.
Don't you have liquid cell? want to take such a solid sample? In my experience we were not employ this technique; either we used KBr/NaCl window or liquid cell. If you don't have the above said, try to make two clear pellets of KBr and place the sample in between pellets. Hope it may be 10% chance to get clear spectrum and it depends on concentration & viscosity of the sample. Good Luck.
Do you really need to perform measurements in transmittance mode? If not it is easier to use ATR equipment.
Hi, I think you need liquid cell to measure FTIR of liquid samples as described by Sultan above. I agree with Karol, it is easier to use ATR FT IR, you can pour the liquid on ATR cell directly. Best regards
Hello, were you succeeded in getting spectra of liquid sample? I am looking for the same, please suggest me the technique/references that were helped in your case. My samples have volatile solvents, so I can no use ATR technique.
Thanks
Purnachandrarao,
Each FTIR instrument should have a liquid cell (you can also purchase on an online catalog) that have salt windows which transmit/absorb the liquid spectrum of the sample.
Firstly, you should be prepare Kbr pellet and then place one drop of your liquid sample on that pellet. Now, you can carryout Ftir spectra.
I hope this would be helpful
There are liquid sample holders for FTIR that you can buy. One of those is found here:https://www.piketech.com/TR-Demountable-Liquid-Cell.html
Due to the limitation of your sample (volatile solvent), you can use Freeze drying. It results in a high quality product because of the low temperature used in processing and then use the lyophilized powder for running FTIR analysis.
Those interested at this discussion may want to check also this related RG query: https://www.researchgate.net/post/Can_we_take_FTIR_Fourier_Transform_Infrared_Spectroscopy_spectrum_of_wintergreen_oil_methyl_salicylate_a_liquid_using_KBr_disk_method
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