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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: astrid94 on May 26, 2015, 01:38:15 AM

Title: FTIR imaging question
Post by: astrid94 on May 26, 2015, 01:38:15 AM

Hi guys,

Just a quick question. If IR light is unable to travel through an object, such as glass, if I were to image this object in  transmission or reflectance, will I just get noise??

Thanks heaps,

Astrid

Title: Re: FTIR imaging question
Post by: Arkcon on May 26, 2015, 08:56:17 AM

It depends on your sample holder.  But in transmittance, yes, you will only see noise.  In reflectance or on an ATR instead of a cell, you may get a spectrum.  Unless something absorbs perfectly at all wavelengths, which doesn't seem likely to me. Cf. http://pubs.acs.org/doi/abs/10.1021/ac403412n

Title: Re: FTIR imaging question
Post by: astrid94 on May 26, 2015, 09:11:58 PM

Thank you  :)