2025 : 9 : 29

Reza Tabaraki

Academic rank: Professor
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Education: PhD.
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Faculty: Basic Science
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Research

Title
Spectrophotometric determination of phenol and chlorophenols by salting out assisted liquid-liquid extraction combined with dispersive liquid-liquid microextraction
Type
JournalPaper
Keywords
Phenols Salting out liquid-liquid extraction Dispersive liquid-liquid microextraction Spectrophotometry Water samples
Year
2019
Journal Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
DOI
Researchers Reza Tabaraki ، Elham Heidarizadi

Abstract

In this work, salting out liquid-liquid extraction (SALLE) combined with dispersive liquid-liquid microextraction (DLLME) was developed as a novel extraction method for extraction and preconcentration of phenol and chlorophenols (CPs) in environmental water samples. The analytes were derivatized with 4-aminoantipyrineand determined by spectrophotometry. Experimental parameters such as type and volume of the organic solvent, type and amount of salt, pH and vortex time were optimized. Under the optimum conditions, calibration curves were linear in the range of 1–300 μg L−1 and limit of detections (LODs) were in the range of 0.15–0.22 μg L−1. The extraction recoveries and enrichment factors ranged from 94.80% to 106.1% and 78.12 to 82.53, respectively. Repeatability ofmethod based on five replicatemeasurements of phenols was in the range of 4.8–7.2%. The results obtained in this study showed that the proposed method is simple, rapid and environmentally friendly with high extraction efficiency for preconcentration and determination of phenol and CPs in real samples. The proposed method was also compared with the reference method.