Determination of pentachlorophenol by flow-injection analysis with spectrophotometric detection

Two FIA methods for the determination of pentachlorophenol, based on its oxidizing—condensation reaction with 4-aminoantipyrine in aqueous medium and spectrophotometric detection in the conventional and stopped-flow modes, are described. In both cases the calibration graphs are linear in the range f...

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Bibliographic Details
Published in:Talanta (Oxford) 1988-08, Vol.35 (8), p.601-604
Main Authors: Rodriguez-Alcala, M., Yañez-Sedeño, P., Diez, L.Ma.Polo
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
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Summary:Two FIA methods for the determination of pentachlorophenol, based on its oxidizing—condensation reaction with 4-aminoantipyrine in aqueous medium and spectrophotometric detection in the conventional and stopped-flow modes, are described. In both cases the calibration graphs are linear in the range from 1.0 to 60.0 μg/ml pentachlorophenol, with sampling rates of 48 and 28 samples/hr for triplicate analysis, respectively. Interferences from phenol and other chlorophenols have been evaluated. The stopped-flow method is particularly useful for determining pentachlorophenol in commercial formulations containing no more than 15% of other chlorophenols.
ISSN:0039-9140
1873-3573
DOI:10.1016/0039-9140(88)80140-1