Application of choline chloride:4-boromo phenol deep eutectic solvent-based dispersive liquid–liquid microxtraction for cobalt sensitive determination and preconcentration in water

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 390

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شناسه ملی سند علمی:

ICCNRT01_219

تاریخ نمایه سازی: 30 دی 1397

چکیده مقاله:

This work presents a fast, feasible and sensitive method forpeconcentration and separation of cobalt in various real samples through use of deep eutectic solvent-based dispersive liquid-liquid microextraction (DES-DLLME); in which deep eutectic solvent, methanol and 1-(2-pyridylazo)-2-naphthole (PAN) were employed as extraction solvent, dispersive solvent and complexing agent, respectively. Co concentration was measured by flame atomic absorption spectrometer. Effective parameters which may influence the extraction efficiencies (like type and volume of dispersive and extraction solvent, pH, PAN concentration, and salt concentration) were examined and optimal values were determined. Use of optimal conditions resulted in the limit of detection equal to 1.5 μg L-1 with a preconcentration factor of 40. RSD value after measuring 20.0 μg L-1 of cobalt for 10 times, resulted in value of 3.0 %. The method accuracy and applicability were assessed through evaluation of Co content in water certified reference materials and different water specimen.

کلیدواژه ها:

Deep eutectic solvent based dispersive liquid-liquid microextraction ، 1-(2-pyridylazo)-2-naphthole ، cobalt ، water samples

نویسندگان

Reyhaneh Rahnama

Department of Chemistry, Payame Noor University, Tehran, IRAN

Saideh Fatemeh Shafeii Darabi

رDepartment of Chemistry, Payame Noor University, Tehran, IRAN

Mohammad Reza Jamali

Department of Chemistry, Payame Noor University, Tehran, IRAN