Spectrophotometric Determination of 2,4-Dichlorophenoxyacetic Acid Using Extraction with Astrafloxin
Жолт Кормош, E. S. Zhurba, Iryna Antal, A. Zh. Kormosh, Yaroslav Bazeľ
Abstract
Abstract We show a possibility of the spectrophotometric determination of 2,4-dichlorophenoxyacetic acid based on the extraction of its ion pair (IP) with polymethine dye Astrafloxin FF with toluene. The maximum recovery of the ion pair from the aqueous phase is achieved at pH 6–11 and a dye concentration of (1.6–2.8) × 10–4 M. The conditional molar absorption coefficient of the ion pair is 4.0 × 104, and the limit of detection for 2,4-dichlorophenoxyacetic acid is 0.9 µg/mL. The developed method of the extraction–spectrophotometric determination of 2,4-dichlorophenoxyacetic acid was used to analyze water and herbicides.
Topics & Concepts
Chemistry2,4-Dichlorophenoxyacetic acidExtraction (chemistry)ChromatographyDetection limitTolueneAqueous solutionIonAqueous two-phase systemAnalytical Chemistry (journal)Organic chemistryBotanyBiologyAnalytical Chemistry and ChromatographyAnalytical chemistry methods developmentAnalytical Methods in Pharmaceuticals