Spectrophotometric Determination of Trace Phenol in Industrial Wastewater and Extracts of Mint and Green Tea after Hollow Fiber Liquid Phase Microextraction with Central Composite Design Optimization

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نوع سند: مقاله ژورنالی
زبان: English
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JR_ANALCH-7-3_006

تاریخ نمایه سازی: 16 بهمن 1401

Abstract:

In the present study, hollow fiber liquid-phase microextraction (HF-LPME) method was used to preconcentrate trace amount of phenol prior to its spectrophotometric determination. Phenol reacted with ۴-aminoantipyrine (۴-AAP) reagent in presence of potassium hexacyanoferrate (III) and then was extracted into the octanol extractant inserted into the lumen and pores of hollow fibers. Some factors such as concentrations of ۴-aminoantipyrine, potassium hexacyanoferrate (III) and ammonium chloride, the rate of stirring, and extraction time were optimized using response surface method based on the central composite design (CCD). Under the optimum conditions, the limit of detection (LOD) and limit of quantification (LOQ) were obtained as ۱.۵ and ۵ μg L-۱, respectively. Also, the relative standard deviation (RSD %) and enrichment factor (EF) were obtained as ۴.۹ % and ۱۷۴, respectively. In addition, the suggested method was implemented to measure of phenol concentration in some real samples, including wastewater of wood and textile factories, as well as the extracts of mint, and green tea. The accuracy was investigated by the recovery of phenol from real samples in the range of ۸۲.۳ – ۱۱۲%. The results showed that the proposed method is simple, rapid, eco-friendly, and accurate for preconcentration and analysis of phenol.

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Authors

Seyedeh Mahsa Seyed Danesh

Department of Chemistry, Payame Noor University, P. O. Box: ۱۹۳۹۵-۳۶۹۷, Tehran, Iran

Shahab Shariati

Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran

Elahe Bozorgzadeh

Department of Medical Biotechnology, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran. Medical Biotechnology Research Center, Guilan University of Medical Sciences, Rasht, Iran

Farhang Mizani

Department of Chemistry, Payame Noor University, P. O. Box: ۱۹۳۹۵-۳۶۹۷, Tehran, Iran

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