Analysis of pyrethroids in cereals by HPLC with a deep eutectic solvent-based dispersive liquid–liquid microextraction with solidification of floating organic droplets

Wu, Beiqi; Guo, Zhongling; Li, Xiuting; Huang, Xin; Chen, Teng; Chen, Zhenjia; Jing, Xu; Zhao, Wenting

doi:10.1039/d0ay02121k

Cited by 19 publications

(6 citation statements)

References 33 publications

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“…It is highlighted that the lower validation performance for the pyrethroids is attributed to their chemical structure and physicochemical properties that make them more prone to gas chromatography in comparison to liquid chromatography. Pyrethroids are typically determined by gas chromatography is soil and sludge [3,14,16,23,24] although HPLC analysis was recently reported for the determination of pyrethroids in cereals [25].…”

Section: Methods Performancementioning

confidence: 99%

Targeted Multiresidue Method for the Analysis of Different Classes of Pesticides in Agro-Food Industrial Sludge by Liquid Chromatography Tandem Mass Spectrometry

et al. 2021

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Sludge generated after washing of fruits and vegetables during agro-food processes is a complex matrix and selective methods for the identification and quantification of pesticides’ residues are necessary in order to achieve a sustainable and effective management of the total sewage. The present work describes the development and validation of a reliable, simple and fast analytical method based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) for the determination of 47 pesticides of different chemical classes, including organosphosphates, pyrethroids, neonicotinoids, triazoles and others, in sludge samples after QuEChERS sample preparation. The necessity of the individual steps of QuEChERS was investigated and the LC-ESI-MS/MS conditions were optimized to achieve maximum sensitivity of the target analytes. The method limits of detection (LODs) ranged between 0.0005 mg/kg (imidacloprid) and 0.05 mg/kg (beta cyfluthrin). The recoveries ranged between 71–120% and the repeatability of the method was ≤25% expressed as relative standard deviation. The method was applied to sludge samples generated after washing of fruits in an agro-fruit-packaging unit in Greece. The results showed the presence of 37 pesticides’ active substances with concentrations ranging from low ppbs, such as fludioxinil (5 μg/kg) up to low ppms such as beta cyfluthrin (3.5 mg/kg) and with their sum concentration reaching up to 19 mg/kg.

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Section: Methods Performancementioning

confidence: 99%

Targeted Multiresidue Method for the Analysis of Different Classes of Pesticides in Agro-Food Industrial Sludge by Liquid Chromatography Tandem Mass Spectrometry

et al. 2021

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“…An adequate recovery range of 80.93 and 109.88% was observed, with good repeatability (RSD less than 6%). The analysis of pyrethroid was further investigated with a different type of HDES, precisely pairing thymol and octanoic acid to extract the insecticide from cereals . The dispersive liquid–liquid microextraction technique can be coupled with a step called solidification of a floating organic drop (SFOD) to ease the collection of the analyte, where the extraction solvent is at a solid phase at a low temperature.…”

Section: Extraction Techniquesmentioning

confidence: 99%

Hydrophobic Deep Eutectic Solvents as Greener Substitutes for Conventional Extraction Media: Examples and Techniques

et al. 2023

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Deep eutectic solvents (DESs) are multicomponent designer solvents that exist as stable liquids over a wide range of temperatures. Over the last two decades, research has been dedicated to developing noncytotoxic, biodegradable, and biocompatible DESs to replace commercially available toxic organic solvents. However, most of the DESs formulated until now are hydrophilic and disintegrate via dissolution on coming in contact with the aqueous phase. To expand the repertoire of DESs as green solvents, hydrophobic DESs (HDESs) were prepared as an alternative. The hydrophobicity is a consequence of the constituents and can be modified according to the nature of the application. Due to their immiscibility, HDESs induce phase segregation in an aqueous solution and thus can be utilized as an extracting medium for a multitude of compounds. Here, we review literature reporting the usage of HDESs for the extraction of various organic compounds and metal ions from aqueous solutions and absorption of gases like CO 2 . We also discuss the techniques currently employed in the extraction processes. We have delineated the limitations that might reduce the applicability of these solvents and also discussed examples of how DESs behave as reaction media. Our review presents the possibility of HDESs being used as substitutes for conventional organic solvents.

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“…A DES consisting of thymol and octanoic acid was used for the preconcentration of strobilurin fungicides in water, juice, wine, and vinegar samples by HPLC [ 59 ], and high extraction recovery was observed (77–107%). Other NADESs were applied for the extraction of different analytes, including patulin in fruit juice and dried fruit samples using the spectrophotometric method [ 60 ]; phthalic acid esters from common infusions and soft drinks [ 61 ]; endocrine-disrupting compounds (EDCs) in injection solutions and sewage [ 62 ]; pyrethroids in cereal samples [ 63 ]; bisphenols and PAHs from tea infusions [ 64 ]; and benzophenone-UV filters (BP-UV filters) from water samples [ 65 ].…”

Section: Dess In Dllme-sfodmentioning

confidence: 99%

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

El-Deen

Shimizu

2021

Molecules

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Deep eutectic solvents (DESs) have recently attracted attention as a promising green alternative to conventional hazardous solvents by virtue of their simple preparation, low cost, and biodegradability. Even though the application of DESs in analytical chemistry is still in its early stages, the number of publications on this topic is growing. Analytical procedures applying dispersive liquid–liquid microextraction based on the solidification of floating organic droplets (DLLME-SFOD) are among the more appealing approaches where DESs have been found to be applicable. Herein, we provide a summary of the articles that are concerned with the application of DESs in the DLLME-SFOD of target analytes from diverse samples to provide up-to-date knowledge in this area. In addition, the major variables influencing enrichment efficiency and the microextraction mechanism are fully investigated and explained. Finally, the challenges and future perspectives of applying DESs in DLLME-SFOD are thoroughly discussed and are critically analyzed.

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Analysis of pyrethroids in cereals by HPLC with a deep eutectic solvent-based dispersive liquid–liquid microextraction with solidification of floating organic droplets

Abstract: A hydrophobic deep eutectic solvent is used as a green extractant.

Cited by 19 publications

References 33 publications

Targeted Multiresidue Method for the Analysis of Different Classes of Pesticides in Agro-Food Industrial Sludge by Liquid Chromatography Tandem Mass Spectrometry

Targeted Multiresidue Method for the Analysis of Different Classes of Pesticides in Agro-Food Industrial Sludge by Liquid Chromatography Tandem Mass Spectrometry

Hydrophobic Deep Eutectic Solvents as Greener Substitutes for Conventional Extraction Media: Examples and Techniques

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

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