Dispersive liquid–liquid microextraction based on the solidification of floating organic droplets for HPLC determination of three strobilurin fungicides in cereals

Huang, Xin; Du, Zhiyi; Wu, Beiqi; Jia, Liyan; Wang, Xiaowen; Jing, Xu

doi:10.1080/19440049.2020.1758349

Cited by 7 publications

(4 citation statements)

References 37 publications

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“…As shown in the data acquired from these experiments in Figure S2 (given in supplementary material), the peak area increases with the volume of ACN up to 1000 μl and then remained almost constant for 1000 and 1200 μl; which was gradually lowered with a further increase in volume. The most probable reason could be associated with the solvent volume, that is, at lower volumes the cloudy solution is not well‐formed whereas, at significantly high dispersive solvent, the increased solvent volumes made the extraction solvent partly dissolved (even completely dissolved) in water, resulting in lowering the partitioning of the analytes providing low peak area [22]. Based on the experimental results, 1000 μl ACN was chosen as the optimum dispersive solvent volume.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, HPLC coupled with a diode array detector (DAD) is also frequently used to determine polar and thermally unstable pesticide compounds [7,[14][15][16][17][18][19][20][21]. Both LC−MS and LC−MS/MS procedures, providing high sensitivity and better levels of selectivity, have increased the interest of researchers these days [4,22]. Most common laboratories lack expensive analytical instruments and have difficulties accessing modern equipment such as LC−MS and LC−MS/MS.…”

Section: Introductionmentioning

confidence: 99%

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Fast surface floating organic droplets based dispersive liquid‐liquid microextraction for trace enrichment of multiclass pesticide residues from different fruit juice samples followed by high performance liquid chromatography–diode array detection analysis

Bekele

Megersa

2023

Separation Science Plus

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This study was designed to enable the development of a simple, fast, and environmentally friendly analytical technique utilizing dispersive liquid‐liquid microextraction based on surface floating organic droplets for selective and quantitative enrichment of trace level pesticide contaminants from different fruit juice samples for subsequent detection by high performance liquid chromatography, combined with a diode array detector. The selective extraction was necessitated in order to isolate the seven multiclass pesticide residues frequently occurring in fruit juice samples. The effects of experimental parameters such as pH of sample solution, type and volume of extraction and dispersive solvents, ionic strength and extraction time were optimized. The optimized method was validated using spiked blank sample and satisfactory results for accuracy, with recoveries ranging from 87.23% to 99.45%, with %relative standard deviation between 1.37 and 8.39, precision in terms of %relative standard deviation ≤ 10.78 and linearity at concentration levels from 3 to 1500 ng/ml, which corresponded with correlation coefficients ≥ 0.998. The limits of detection and the limits of quantification were ranged from 1.3×10−2 to 5.3×10−2 and 4.2×10−2 to 1.8×10−1 μg/L, respectively. At the end, the method was successfully applied to analyze real fruit juice samples and target analytes were not detected in real samples.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fast surface floating organic droplets based dispersive liquid‐liquid microextraction for trace enrichment of multiclass pesticide residues from different fruit juice samples followed by high performance liquid chromatography–diode array detection analysis

Bekele

Megersa

2023

Separation Science Plus

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“…This method was compared with reported DLLME studies ( Ahmadi-Jouibari et al, 2022 , Huang et al, 2020 , Jia et al, 2020 , Toloza et al, 2020 ) by comparing the extraction methods, extractant solvents, dispersant solvents, centrifugation, ice baths, dryness, dissolution, detection methods, LODs, and ER values ( Table 3 ). Compared with other studies, this method used green MDES as an extractant solvent to replace toxic extractants (such as carbon tetrachloride).…”

Section: Resultsmentioning

confidence: 99%

Magnetic deep eutectic solvent-based dispersive liquid–liquid microextraction for determination of strobilurin fungicides in water, juice, and vinegar by high-performance liquid chromatography

et al. 2023

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“…[3,21,24,[27][28][29] Recently, this technique can be coupled to the solidified floating organic droplet (SFOD) extraction combining the advantages of both techniques. [30,31] The resulting DLLME-SFOD technique has been widely used in the rapid analysis of hydrophobic analytes including pesticides, [32][33][34][35][36][37] chlorophenol, [30] steroids, [38] polychloro biphenyls (PCBs), [39] and endocrine-disrupting compounds (EDCs) [40] in foodstuff and environmental water and soil samples. Very sensitive and reproducible results can be obtained by this means, but the conformity of this technique for determining UV filters has not yet been investigated.…”

Section: Introductionmentioning

confidence: 99%

Determination of UV Filters in Surface Water by VA‐DLLME‐SFOD Technique Coupled with GC‐MS/MS

Yücel

Ertaş

et al. 2022

CLEAN Soil Air Water

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A simple, rapid, and sensitive method is developed for the determination of UV filters in river waters by applying the vortex-assisted dispersive liquid-liquid microextraction based on solidified floating organic droplet technique followed by the injector port silylation (IPS) in a gas chromatography-tandem mass spectrometry system. Statistical experimental design methods including general factorial design, one factor at a time, and central composite face-centered design are used for optimization purposes. Under optimized conditions, 460 µL of acetone and 30 µL of 2-dodecanone are rapidly injected into a 10 mL water sample with 10% (w/v) NaCl at pH 2.5 and vortexed for 3 min. After centrifugation, 2 µL of the separated organic solvent is subjected to auto-IPS with 1 µL of bis (trimethylsilyl) trifluoroacetamide containing 1% trimethylchlorosilane, at 260 °C for 4.5 min in programmable temperature vaporization mode. As a result of the validation studies, the intra-day and inter-day precision indicated as relative standard deviation are less than 12.4% and 18.8%, respectively. For all UV filters, detection limits are between 1.1 and 5.5 ng L −1 and limit of quantitation values are between 3.1 and 16.6 ng L −1 . Successful recovery of extraction values (77.1%-107.4%) and good enrichment factors (231-350) are obtained.

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Dispersive liquid–liquid microextraction based on the solidification of floating organic droplets for HPLC determination of three strobilurin fungicides in cereals

Cited by 7 publications

References 37 publications

Fast surface floating organic droplets based dispersive liquid‐liquid microextraction for trace enrichment of multiclass pesticide residues from different fruit juice samples followed by high performance liquid chromatography–diode array detection analysis

Fast surface floating organic droplets based dispersive liquid‐liquid microextraction for trace enrichment of multiclass pesticide residues from different fruit juice samples followed by high performance liquid chromatography–diode array detection analysis

Magnetic deep eutectic solvent-based dispersive liquid–liquid microextraction for determination of strobilurin fungicides in water, juice, and vinegar by high-performance liquid chromatography

Determination of UV Filters in Surface Water by VA‐DLLME‐SFOD Technique Coupled with GC‐MS/MS

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