Analysis of Hydrogen Bond by Near Infrared Spectrometry

Introduction

By comparison with the mid-infrared spectrometry, the near infrared spectrometry has the following features ; the pretreatments such as dilutions are not necessary or the glass and other type cells can be used due to its small absorption coefficient, and making it easy to use for analysis of foods and biological samples because its water absorption is relatively weak. Furthermore, there is a benefit that the information regarding the hydrogen bond is easily obtained in the near infrared spectrum, since the peak position of non hydrogen-bonded OH group and that of hydrogen- bonded OH group differ greatly. Introduced here are applications using a heated transmission cell to analyze the hydrogen bonds in an alcohol and a fatty acid.

October 19, 2004 GMT