A green alternative QuEChERS developed based on green deep eutectic solvents coupled with gas chromatography-mass spectrometry for the analysis of pesticides in tea samples

Soltani, Sara; Sereshti, Hassan

doi:10.1016/j.foodchem.2022.132181

Cited by 42 publications

(19 citation statements)

References 40 publications

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“…Various conventional approaches have been reported for detecting and identifying pesticides and their residues, including high-performance liquid chromatography combined with mass spectrometry, gas chromatography coupled with mass spectrometry, immunoassays, and molecularly imprinted polymer-based sensors [ 7 , 8 , 9 , 10 ]. Although these approaches exhibit high accuracy and sensitivity, most require time-consuming sample pretreatment procedures, expensive, bulky equipment, and experienced operators.…”

Section: Introductionmentioning

confidence: 99%

Sodium-Alginate-Functionalized Silver Nanoparticles for Colorimetric Detection of Dimethoate

Zhou

Chang

et al. 2022

Biosensors

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Sodium alginate (SA) was used to functionalize the surfaces of silver nanoparticles (AgNPs) to form SA-AgNPs for sensing dimethoate with a rapid and sensitive visual readout. UV–Vis spectrophotometry, Fourier transform infrared spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and zeta potential measurements were used to characterize SA-AgNPs that were synthesized under the ideal conditions. SA-AgNPs were spherical with an average size of 14.6 nm. The stability of SA-AgNPs was investigated with changes in pH, salinity, and storage time. This colorimetric assay of dimethoate relied on the change in the absorption ratio (A475/A400) of SA-AgNPs, resulting in their aggregation caused by dimethoate, leading to a visual change for SA-AgNPs from yellow to pale yellow. As a result, the absorption ratio (A475/A400) of SA-AgNPs showed good linearity in the range of 0.05 to 2.0 ppm (R2 = 0.9986) with a limit of detection (LOD) of 30 ppb. Adding other pesticides did not significantly change the absorption ratio of SA-AgNPs, indicating its high selectivity as a colorimetric assay. The sensor was successfully used to detect dimethoate in actual water samples.

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Section: Introductionmentioning

confidence: 99%

Sodium-Alginate-Functionalized Silver Nanoparticles for Colorimetric Detection of Dimethoate

Zhou

Chang

et al. 2022

Biosensors

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“…The desorption solvent is used to elute the adsorbed target analytes from the sorbent without damaging the sorbent. Besides, the eluent must be compatible with GC chromatography, and its peak should not interfere with the peaks of target analytes in the chromatograms . On the other hand, the desorption solvent should be sufficient to dissolve the analytes quantitatively.…”

Section: Resultsmentioning

confidence: 99%

“…Besides, the eluent must be compatible with GC chromatography, and its peak should not interfere with the peaks of target analytes in the chromatograms. 38 On the other hand, the desorption solvent should be sufficient to dissolve the analytes quantitatively. Hence, regarding the polarity and solubility of the pesticides, different solvents, including acetone, MeOH, EtOH, and ACN, were chosen for the test.…”

Section: Effect Of Desorption Conditions (Solvent Type Volume and Des...mentioning

confidence: 99%

Copolymerized Natural Deep Eutectic Solvent Encapsulated in Calcium Alginate Beads: Application as a Green Sorbent for Analysis of Multiclass Pesticides in Nonalcoholic Malt Beverages by GC–MS/SIM

Karami

Sereshti

2023

ACS Sustainable Chem. Eng.

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A novel sorbent material consisting of a copolymeric deep eutectic solvent (DES) gel doped in calcium alginate (CA) hydrogel beads was synthesized and used in a green micro-solid phase extraction of 24 pesticides in 8 nonalcoholic malt beverages. The analyses were performed by gas chromatography–mass spectrometry/selective-ion monitoring. The DES was prepared by combining thymol (Thy, thyme oil) and methacrylic acid (MAA, can be obtained from Roman chamomile oil) in a 1:1 molar ratio via the heating-stirring method. Then, it was copolymerized using ammonium persulfate as a polymerization initiator and ethylene glycol dimethacrylate (EGDMA) as a crosslinking monomer through thermally induced free-radical reaction and finally was encapsulated in CA beads. The DES was characterized by Fourier transform infrared, Fourier transform nuclear magnetic resonance, and scanning electron microscopy techniques. A comparison study indicated that t extractionhe efficiency of the modified CA with polymeric DES (CA/[poly(MAA-co-EGDMA)]:[Thy]) was 1.5–3.4-fold higher than unmodified CA hydrogel beads. The influence of significant parameters affecting extraction efficiency was optimized. The method was validated by the matrix effect, specificity, precision, limits of quantifications (0.010–0.230 μg L–1), matrix-matched calibration linearity (0.010–300 μg L–1), and determination coefficients (r 2 = 0.990–0.998). The method was successfully utilized for the detection of pesticide residues in nonalcoholic malt beverage samples, and the obtained relative recoveries were 68.2–115.6% (relative standard deviation < 10.2%). The procedure’s greenness was evaluated by the Complex Green Analytical Procedure Index and the Analytical Eco-Scale protocols. This paper is the first report on the preparation and utilization of this novel sorbent for the analysis of pesticides in nonalcoholic malt drinks.

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“…The resulting solvent system can be an excellent alternative solvent for green chemistry applications. 22 It is also because of the hydrogen bonding that DES have very low volatility compared to conventional solvents. DESs have a wide variety of structures, as the HBA and HBD for building the DES can be arbitrarily paired, and different pairings will also have different physical and chemical properties.…”

Section: Definition and Composition Of Desmentioning

confidence: 99%

DES: their effect on lignin and recycling performance

Zhang

et al. 2023

RSC Adv.

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A green alternative QuEChERS developed based on green deep eutectic solvents coupled with gas chromatography-mass spectrometry for the analysis of pesticides in tea samples

Cited by 42 publications

References 40 publications

Sodium-Alginate-Functionalized Silver Nanoparticles for Colorimetric Detection of Dimethoate

Sodium-Alginate-Functionalized Silver Nanoparticles for Colorimetric Detection of Dimethoate

Copolymerized Natural Deep Eutectic Solvent Encapsulated in Calcium Alginate Beads: Application as a Green Sorbent for Analysis of Multiclass Pesticides in Nonalcoholic Malt Beverages by GC–MS/SIM

DES: their effect on lignin and recycling performance

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