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Pulp and Paper

Phenols originate in a variety of chemical, petrochemical, and pulp and paper processes. Many are highly toxic and 11 common phenols appear on the U.S. EPA priority pollutants list. Phenols have commonly been determined by gas chromatography, but liquid/ion chromatographic methods are finding increased application, particularly when a large amount of nonvolatile compounds are present in the sample matrix and can poison the GC column.

A wide variety of phenolic compounds can be determined using reversed-phase separations and either UV or amperometric detection. Amperometric methods are generally more sensitive while UV detection is commonly employed as the workhorse detector of HPLC and is generally preferable to amperometry when phenol concentrations are above 1 mg/L.