Preparation of Magnetite Nanocomposites based on Azolla Filiculoides fern with Environmental Applications for Organic Pollutants

Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_BIOEM-1-2_002

تاریخ نمایه سازی: 26 مهر 1402

Abstract:

Azolla Filiculoides fern was utilized as a natural adsorbent to develop a magnetic solid phase extraction method for the preconcentration and determination of trace amounts of chlorpyrifos pesticide, which is a primary environmental concern. In this study, the magnetic solid phase extraction (MSPE) method using magnetite-modified azolla nanocomposites (azolla@Fe۳O۴ NCs) was developed to preconcentrate trace amounts of chlorpyrifos pesticide prior to UV-Vis spectroscopy. The structural characteristics of the synthesized nanocomposites (NCs) were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FT-IR), and vibrating sample magnetometry (VSM) methods. In the proposed MSPE method, after optimizing the adsorption/desorption variables in MSPE and obtaining the optimum level of each variable (adsorption step: Vsample = ۵۰ mL, contact time = ۱۵ min, solution pH = ۳, adsorbent mass = ۰.۰۵ g, ionic strength = ۰.۰۱ mol L-۱; desorption step: eluent type and volume = ethanol (۲ mL) for ۱۰ min), the desorbed ethanolic solution was spectrophotometrically investigated in the UV-Vis region. The results confirm the developed MSPE method can be used for the preconcentration and determination of trace amounts of chlorpyrifos in the aqueous samples.

Keywords:

Azolla filiculoides , Magnetic Solid phase Extraction , nanocomposite , Pesticide , Chlorpyrifos

Authors

Reyhaneh Kouchakinejad

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

Shahab Shariati

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

Jafar Abolhasani

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

Ebrahim Ghorbani-Kalhor

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

Mohammad Taghi Vardini

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