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Chapter 13 Alcohols and Phenols, Ethers

Identifiers
DOI: 10.1016/s0301-4770(08)60251-1
Disciplines
  • Chemistry

Abstract

Publisher Summary Lower monohydric alcohols are best analyzed by gas chromatography, while liquid column chromatography is suitable for the separation of higher free alcohols, their derivatives, and phenols. The application of gradient elution to the separation of aliphatic alcohols is subject to detection problems, because these compounds are neither UV-absorbing nor fluorescent. Therefore, it is necessary to prepare suitable derivatives that would increase the UV absorptivity. Aromatic alcohols and phenols can be easily detected by UV absorption. Much more frequent and important are the applications of gradient elution liquid chromatography to the analysis of phenolic compounds. Some phenolics, in particular halogenated phenols and nitrophenols, are toxic pollutants in industrial wastewaters. UV absorption at a wavelength in the range 210–280 nm has been used in the gradient elution chromatography of phenols. An electrochemical detector using a tubular graphite anode made of carbon black/polyethylene has also proved to be very sensitive for the detection of mono- to pentachlorophenols. The detection has been superior to UV detection at 210 nm and has been applied to the trace determination of phenolic compounds in water.

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