Biphenyl and 2-phenylphenol are steam distilled from a citrus fruit homogenate into two portions of cyclohexane. An aliquot of the first extract is analysed for biphenyl by gas-liquid chromatography. Aliquots of the first and second extracts are combined and then cleaned up and concentrated by means of further extractions prior to the gas-liquid chromatographic determination of 2-phenylphenol.
G. Westöö and A. Andersson, Analyst, 1975, 100, 173 DOI: 10.1039/AN9750000173
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