Can you get a fingerprint off money?
Yes, there are several chemicals that can be used to develop latent fingerprints on currency.
Will rain remove fingerprint on a csi? ummm okay that'll be a hard one to answer, because first off why is the fingerprint on the CSI and why doesn't the CSI hurry in out of the rain to preserve it? All joking aside, yes it will. Rain can be a CSI's worst enemy when it comes to outside things. Fingerprints do not last forever, and water can was them away.
The fingerprint region in infrared spectrscopy is used for identifying compounds by matching the sample spectrum to the standard. The fingerprint region is specific to each compound. Very similar compounds will have small differences in the fingerprint region so the fingerprint region can be used to differentiate them.