What is peak intensity in FTIR?

In FTIR, an increase in the peak intensity usually means an increase in the amount (per unit volume) of the functional group associated with the molecular bond, whereas a shift in peak position usually means the hybridization state or electron distribution in the molecular bond has changed.

What is the difference between FTIR and ATR?

FTIR is any Fourier Transform Infrared spectroscopy method in any measuring geometry, may it be transmission, reflection or whatever. ATR stands for attenuated total reflection and is developed in order to enhance the surface sensitivity since IR spectroscopy is a bulk method.

What is ATR mode in FTIR?

Attenuated total reflection (ATR) is a sampling technique used alongside traditional infrared spectroscopy, which ultimately qualifies samples to be observed directly in either solid or liquid state, without additional preparation.

What can be measured with an ATR-FTIR spectrometer?

system of ethanol (EtOH) in water. The use of attenuated total reflection (ATR) accessories in conjunction with Fourier transform infrared (FTIR) spectrometers is now commonplace. This accessory provides for the non-destructive measurement of samples with little or no preparation.

What are the advantages and disadvantages of ATR-FTIR?

A key advantage to ATR-FTIR relative to other FTIR collection methods, and analytic techniques in general, is the ability to collect accurate spectra of samples in the presence of water.

How is cured epoxy measured by ATR and FTIR?

ATR sampling with an FTIR is widely used for this analysis because a sample is readily measured within a minute or less by placing a small chip of the cured epoxy onto the ATR crystal and then applying pressure to achieve full contact with the ATR crystal. Instrumentation

What is the ATR protocol in JASCO FTIR-4100?

ATR protocol (JASCO FTIR-4100) 1. Introduction to ATR technique (Attenuated Total Reflectance) While traditional IR spectrometers have been used to analyze solids, liquids and gases by means of transmitting the infrared beam directly through the sample, ATR uses the reflectance of the sample instead.