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1.) Explain the advantages of a FT instrument over a constant wavelength diffuse instrument. 2.) Explain why...

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Chemistry

1.) Explain the advantages of a FT instrument over a constantwavelength diffuse instrument.

2.) Explain why Infrared spectroscopy uses interferometersrather than constant wavelength spectrometers.

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3.6 Ratings (300 Votes)
FTIR Advantages There are three major advantages in the performance of an FTIR spectrometer over a dispersive infrared spectrometer These advantages have been the reason for the switch to the more modern FTIR technique in the last decade by infrared spectroscopists Multiplex Advantage An interferometer in an FTIR instrument does not separate energy into individual frequencies for measurement of the infrared spectrum Each point in the interferogram contains information from each wavelength of light being measured Every stroke of the moving mirror in the interferometer equals one scan of the entire infrared spectrum and individual scans can be combined to give better representation of the actual absorbance of the sample In contrast every wavelength    See Answer
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