Temperature-controlled ionic liquid dispersive liquid phase micro-extraction
Abstract
The present study reports a novel, green and environmental benign sample enrichment method termed temperature-controlled ionic liquid dispersive liquid phase micro-extraction. An ionic liquid [C6MIM][PF6], was used as the extraction solvent and pyrethroid pesticides as the model compounds. The ionic liquid was dispersed completely into the aqueous solution under the drive of temperature, and the analytes will more easily migrate into the ionic liquid phase because of the much larger contact area than that of conventional single drop liquid micro-extraction. Results obtained indicated that this system could be tuned to a great extent because ionic liquids can be designable and the method does not suffer from the limitations of that in conventional solvent micro-extraction. Analytical parameters of the proposed method were investigated and good linear range (1.5-100 microg L(-1)), detection limits (0.28-0.6 microg L(-1)), and precision (RSD of 2.7-9.3%, n=6) was obtained. Good spiked recoveries from six real water samples proved that this method was competitive in practical applications. Considering the large variety of ionic liquids and the tunable amounts of used ionic liquids in different experiments, the proposed method earns many merits and will have a wide application perspective in the future.
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Zhou et al. [13] obtained spiking recoveries of 76.7-135.6% and LODs of 0.28-0.6 μg/L.
“This study obtained good spiking recoveries (76.7-135.6%) and LODs in the range 0.28-0.6 l g/L.”
From Dispersive liquid-liquid microextraction for determination of organic analytes (2010) · cites this paper as [13]
In four IL-DLLME pesticide works, no disperser solvent was used (only the IL [HMIm][PF6]), because dispersion is temperature-assisted.
“We should mention that, in four of these works [13-16], no disperser solvent was used (only the IL [HMIm][PF6]), since the dispersion is temperature-assisted.”
From Dispersive liquid-liquid microextraction for determination of organic analytes (2010) · cites this paper as [13]
In most IL-DLLME pesticide works, water samples were analyzed using HPLC as the separation technique.
“In most cases, water samples have also been analyzed using HPLC as the separation technique [13-16,32,47].”
From Dispersive liquid-liquid microextraction for determination of organic analytes (2010) · cites this paper as [13]
The temperature-controlled LPME variation has been applied using only ionic liquids as extractants.
“This variation of the technique has been applied using only ionic liquids (ILs) as extractants [13-16]”
From Dispersive liquid-liquid microextraction for determination of organic analytes (2010) · cites this paper as [13]
The first application of temperature-controlled IL-DLLME was by Zhou et al. [13], who extracted five pyrethroid pesticides from water samples.
“The first application of this variation of the IL-DLLME technique was the work of Zhou et al . [13], who used temperature-controlled IL-DLLME to extract five pyrethroid pesticides (cyhalothrin, deltamethrin, fenvalerate, taufluvalinate and biphenthrin) from different types of water samples (tap, river and reservoir water, and groundwater).”
From Dispersive liquid-liquid microextraction for determination of organic analytes (2010) · cites this paper as [13]
For IL-DLLME of pesticides, a relatively small number of works has been published, especially in recent years.
“Regarding IL-DLLME of pesticides, a relatively small number of works has come out, especially in recent years [13-16,32,38,47,50].”
From Dispersive liquid-liquid microextraction for determination of organic analytes (2010) · cites this paper as [13]
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- Authors
- Zhou, Q., Bai, H., Xie, G., & Xiao, J.
- Affiliations
- Henan Normal University (CN)
- Henan Institute of Science and Technology (CN)
- University of Science and Technology Beijing (CN)
- Corresponding author
- Zhou, Qingxiang
- Venue
- Journal of Chromatography A
- Publisher
- Elsevier BV
- Published
- 2008-01
- Volume
- 1177
- Issue
- 1
- Pages
- 43-49
- ISSN
- 0021-9673 (ISSN-L)
- OpenAlex
- W2002565992
- Cited by
- 303
- References
- 0
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 4 · 2023: 2 · 2022: 7 · 2021: 5 · 2020: 8 · 2019: 16 · 2018: 15 · 2017: 15 · 2016: 18 · 2015: 20 · 2014: 34 · 2013: 29 · 2012: 26
- FWCI
- 19.74
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Chromatography A (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
- Physical Sciences › Chemical Engineering › Catalysis › Ionic liquids properties and applications
- Life Sciences › Agricultural and Biological Sciences › Food Science › Pesticide Residue Analysis and Safety
- Keywords
- ionic liquids, pyrethroid insecticides, preconcentration, water analysis, green sample preparation
- MeSH terms
- Chromatography, Liquid, Pesticides, Pyrethrins, Sensitivity and Specificity, Temperature, Reproducibility of Results
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