OSA's Digital Library

Applied Spectroscopy

Applied Spectroscopy


  • Vol. 52, Iss. 7 — Jul. 1, 1998
  • pp: 963–969

Subtraction of the Water Spectra from Infrared Spectra of Acidic and Alkaline Solutions

Jean-Joseph Max and Camille Chapados

Applied Spectroscopy, Vol. 52, Issue 7, pp. 963-969 (1998)

View Full Text Article

Acrobat PDF (277 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

  • Export Citation/Save Click for help


The IR spectrum of a sample in acidic and alkaline solutions cannot be retrieved adequately when only the spectrum of pure water is subtracted. After such an operation, some water bands remain in the spectrum, which also has a distorted baseline. An analysis of a series of IR spectra of HCl and NaOH solutions showed that they could be represented by two pairs of eigenspectra, one pair for the acidic solutions and the other for the basic solutions. The fraction of each eigenspectrum of a sample in an acidic or alkaline solution is determined with the 2100 and 3300 cm-1 water bands. After subtraction, no baseline adjustment is necessary. The effectiveness of the method used to subtract the water bands is illustrated with solutions of malic acid at low and high pH.

Jean-Joseph Max and Camille Chapados, "Subtraction of the Water Spectra from Infrared Spectra of Acidic and Alkaline Solutions," Appl. Spectrosc. 52, 963-969 (1998)

Sort:  Journal  |  Reset


References are not available for this paper.

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited