Ultrasound-assisted dispersive liquid-liquid microextraction (DLLME) based on solidification of floating organic drop using a deep eutectic solvent for simultaneous preconcentration and determination of nickel and cobalt in food and water samples

Tavakoli, Maedeh; Jamali, Mohammad Reza; Nezhadali, Azizollah

doi:10.1080/00032719.2021.1897990

Cited by 32Analytical chemistry methods developmentElectrochemical Analysis and ApplicationsAnalytical Chemistry and Chromatography

Ultrasound-assisted dispersive liquid-liquid microextraction (DLLME) based on solidification of floating organic drop using a deep eutectic solvent for simultaneous preconcentration and determination of nickel and cobalt in food and water samples

Tavakoli, Maedeh, Jamali, Mohammad Reza, Nezhadali, Azizollah·2021·Analytical Letters

DOI 10.1080/00032719.2021.1897990

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Abstract

Ultrasound-assisted deep eutectic solvent-based dispersive liquid-liquid microextraction (UA-DES-DLLME-SFO) was employed with the solidification of floating organic drop to simultaneously preconcentrate and determine nickel and cobalt in food and water by flame atomic absorption spectrometry (FAAS). 2-(5-Bromo-2-pyridylazo)-5-(diethylamino) phenol (5-Br-PADAP) was employed as the chelating agent, while decanoic acid and dl-menthol were employed as deep eutectic solvents. The influence of extraction solvent type and volume, chelating agent content, pH, ionic strength, and ultrasonication duration was assessed on the microextraction efficiency. Moreover, analytical figures of merit of the approach were determined. The optimal condition resulted in detection limits of 0.3 µg/L and 0.4 µg/L, quantification limits of 1.1 µg/L and 1.3 µg/L, and preconcentration factors of 50 for Ni and Co, respectively. Relative standard deviations (n = 10) for 50.0 µg/L nickel and cobalt were 2.3% and 2.5%, respectively. The developed technique was employed to simultaneously extract and determine nickel and cobalt contents of food and water samples.

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In regard to the transition metals, zinc [80], cobalt [55], copper [17,74], mercury [74,75,77], nickel [55], cadmium [17,74,75,80], and chromium [81] have all been quantified using DES in DLLME-SFOD.
“In regard to the transition metals, zinc [80], cobalt [55], copper [17,74], mercury [74,75,77], nickel [55], cadmium [17,74,75,80], and chromium [81] have all been quantified using DES in DLLME-SFOD.”
From Deep Eutectic Solvents as Promising Green Solvents in Dispersive Liquid–Liquid Microextraction Based on Solidification of Floating Organic Droplet: Recent Applications, Challenges and Future Perspectives (2021) · cites this paper as [55]
DES-DLLME-SFOD was also applied for the extraction of Pb, Cd, Cu, As, and Hg from tea [76], Cr (VI) from urine samples [81], and nickel and cobalt from food and water [55].
“DES-DLLME-SFOD was also applied for the extraction of Pb, Cd, Cu, As, and Hg from tea [76], Cr (VI) from urine samples [81], and nickel and cobalt from food and water [55].”
From Deep Eutectic Solvents as Promising Green Solvents in Dispersive Liquid–Liquid Microextraction Based on Solidification of Floating Organic Droplet: Recent Applications, Challenges and Future Perspectives (2021) · cites this paper as [55]

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Authors: Tavakoli, M., Jamali, M. R., & Nezhadali, A.
Affiliations: Payame Noor University (IR)
Corresponding author: Jamali, Mohammad Reza
ORCID: Jamali, Mohammad Reza
Nezhadali, Azizollah
Venue: Analytical Letters
Publisher: Informa UK Limited
Published: 2021-03-11
Volume: 54
Issue: 18
Pages: 2863-2873
ISSN: 0003-2719 (ISSN-L)
1532-236X
DOI: 10.1080/00032719.2021.1897990
OpenAlex: W3138463797
Cited by: 32
References: 42
Citations by year: 2026: 5 · 2025: 7 · 2024: 5 · 2023: 6 · 2022: 7 · 2021: 2
FWCI: 2.51
Type: journal article
Language: en
Open access: closed
Locations: Analytical Letters (publishedVersion)
Funders: Payame Noor University
Topics: Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
Physical Sciences › Chemistry › Electrochemistry › Electrochemical Analysis and Applications
Physical Sciences › Chemistry › Spectroscopy › Analytical Chemistry and Chromatography
Keywords: dispersive liquid-liquid microextraction, solidification of floating organic drop, deep eutectic solvents, ultrasound-assisted extraction, nickel determination, cobalt determination, food samples, water samples, 5-Br-PADAP, capric acid, DL-menthol, preconcentration, simultaneous determination

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Ultrasound-assisted dispersive liquid-liquid microextraction (DLLME) based on solidification of floating organic drop using a deep eutectic solvent for simultaneous preconcentration and determination of nickel and cobalt in food and water samples

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