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Ultrasound-Assisted Dispersive Liquid-Liquid Microextraction Using Deep Eutectic Solvents (DESs) for Neutral Red Dye Spectrophotometric Determination
Abstract
Deep eutectic solvents (DES), which have low toxicity and are low cost, biodegradable, and easily synthesized, were used for the extraction of neutral red (NR) dye before its spectrophotometric analysis. DES, containing choline chloride as a hydrogen bond acceptor and phenol as a hydrogen bond donor with a molar ratio of 1:2, was used for the extraction of NR dye from aqueous media. The possible interaction of different DESs with NR was studied using density functional theory (DFT) calculations. Experimentally, a UV-visible spectrophotometer was used for the quantitative analysis. The most important parameters affecting method performance, such as pH, extraction temperature, DES type, its volume, THF volume, sonication time, and centrifugation time, were optimized. The developed method provides exceptional sensitivity in terms of LOD and LOQ, which were 2.2 and 7.3 µg/L respectively. The relative standard deviation was 1.35–1.5% (n = 10), and the pre-concentration factor was 40. The method was found to be linear in the range of 2–300 µg/L (R2 = 0.9967). The method was successfully used for the determination of NR in wastewater samples. Finally, the DES-based method presents operational simplicity, high sensitivity, and rapid determination (<5 min) compared with other analytical procedures.
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Authors (9)
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Sana Ullah
- Department of Chemistry, University of Malakand, Chakdara 18800, Pakistan
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Muhammad Salman
- Department of Chemistry, University of Malakand, Chakdara 18800, Pakistan
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Faheem Jan
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China
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Muhammad Balal Arain
- Department of Chemistry, University of Karachi, Karachi 75270, Pakistan
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Roberto Castro-Muñoz
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/molecules27186112
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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MOLECULES
no. 27,
ISSN: 1420-3049 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Ullah S., Haq H., Salman M., Jan F., Safi F., Arain M. B., Khan M., Castro-Muñoz R., Boczkaj G.: Ultrasound-Assisted Dispersive Liquid-Liquid Microextraction Using Deep Eutectic Solvents (DESs) for Neutral Red Dye Spectrophotometric Determination// MOLECULES -Vol. 27,iss. 18 (2022), s.6112-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/molecules27186112
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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