Advanced ATR Correction to Convert ATR Spectra to Transmission Spectra

Introduction

The ATR method is used not only for verification testing, it is a technique that is widely used for contaminant analysis. Comparing the spectrum acquired by the ATR technique with that obtained using transmission spectroscopy, the values indicated on the respective vertical and horizontal axes, in principle, are slightly different. Accordingly, an appropriate correction must be applied to the vertical and horizontal axes of the ATR spectrum when matching the ATR spectrum to a transmission spectrum or database to obtain more accurate results. Here, we introduce an advanced ATR correction processing feature which permits an ATR spectrum to approximate a transmission spectrum, along with an evaluation of the result.

February 3, 2014 GMT