Introducing a new pH assisted homogeneous liquid-liquid microextraction method based on switchable-hydrophilicity solvents followed by GC-MS for the determination of PAHs in water samples

Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

IRANCC20_087

تاریخ نمایه سازی: 28 اردیبهشت 1398

Abstract:

Recently, a new group of compounds, namely switchable hydrophilicity solvents (SHSs), has been introduced into the extraction field [1]. In this study, a new pH assisted homogeneous liquid-liquid microextraction method based on SHSs followed by GC-MS detection has been developed for preconcentration and determination of polycyclic aromatic hydrocarbons (PAHs) in water samples. PAHs are important compounds because of their prevalence in the environment [2]. The extraction technique makes use of 150 μL of a water-immiscible solvent (Dipropylamine) that can be solubilized in the aqueous phase (6 mL) using HCl as a reagent. Afterwards, phases separation is induced by the addition of sodium hydroxide. The effects of operational parameters of the extraction were investigated and optimized. Under the optimum conditions, proposed method provided good linearity (1–1000 μg L−1), low limits of detection (0.3 μg L−1) and acceptable extraction repeatabilities (RSD% = 4.3-6.8). Finally, the proposed method allows the determination of the target analytes in different types of natural water samples and acceptable recoveries were obtained

Authors

Mozhgan Salehi

Department of Chemistry, Faculty of Science, University of Zabol, Zabol, Iran

Hamid Ahmar

Department of Chemistry, Faculty of Science, University of Zabol, Zabol, Iran

Kobra Sadat Hasheminasab

Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran