Attenuated total reflection (ATR) is a sampling technique used in conjunction with infrared spectroscopy which enables samples to be examined directly in the solid or liquid state without further preparation.

Attenuated Total Reflection (ATR) is a measurement technique used in IR spectroscopy, the most common measurement technique used in fact. This is thanks to how easy ATR is to use and the broad range of samples that are possible to analyze with this technique.

Attenuated total reflection (ATR) is a method that allows the direct measurement of samples for FTIR. ATR method involves pressing the sample against a high-refractive-index prism and measuring the infrared spectrum using infrared light that is totally internally reflected in the prism.

Jul 26, 2023 · Attenuated Total Reflectance (ATR) is an optical spectroscopy technique that involves directing light through a high refractive index material at an angle greater than the critical angle, leading to total internal reflection, and enabling analysis of a wide range of samples in direct contact with the ATR crystal.

ATR-measurement is straightforward, the steps are listed below: Cleaning the crystal (e.g. with a cellulose tissue and isopropanol). Measuring the background with the ATR unit.

Attenuated total reflectance or ATR is, along with transmission, one of the most common sampling techniques in Fourier transform infrared (FTIR) spectroscopy. ATR is based on total internal reflection where infrared (IR) light and sample interact only at the point where IR light is reflected.

Aug 4, 2022 · The high index of refraction material used to create internal reflection is called an internal reflection element (IRE) or an ATR crystal. Both terms are common. Figure 1 illustrates the general features of an internal reflection configuration and labeling of various components.

Feb 13, 2012 · ATR has advanced to become the standard FT-IR sampling technique, providing excellent data quality combined with high reproducibility. Most samples can be analysed with a diamond ATR-crystal which possesses extreme chemical and mechanical robustness, while Germanium can be used for special purposes, e.g. for measuring highly absorbing samples ...

ATR-FTIR (which stands for ‘Attenuated Total Reflectance Fourier-Transform Infrared’) spectroscopy is a powerful analytical technique, used to investigate the molecular composition of materials.

In this first part, we’ll learn the basics of ATR spectroscopy. In the second, we’ll learn how to calculate the effective depth of penetration for ATR, and in the third, we’ll discuss some of the practical implications of different ATR puck choices for the Quest ATR accessory.