Sequential extraction and enrichment of pesticide residues in Longan fruit by ultrasonic-assisted aqueous two-phase extraction linked to vortex-assisted dispersive liquid-liquid microextraction prior to high performance liquid chromatography analysis

Chen, Zhixu; Li, Qi; Yang, Taicheng; Yao-feng, Zhang; He, Minghong; Zeng, Huiyun; Mai, Xiaoman; Liu, Yingtao; Fan, Huajun

doi:10.1016/j.chroma.2020.460929

Cited by 28 publications

(5 citation statements)

References 43 publications

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“…However, the results obtained for this study revealed fairly better peak areas in most cases for ACN, Figure 3, and thus ACN was chosen as a preferred dispersive solvent. In other earlier studies in the fruit juice samples, for other trace pesticide residues, comparable results were also obtained and reported in the literature [16,41].…”

Section: Effect Of the Dispersive Solventssupporting

confidence: 89%

“…Most pesticides are volatile and thermally stable, making them suitable for GC [8][9][10][11][12][13]. 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].…”

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: Effect Of the Dispersive Solventssupporting

confidence: 89%

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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“…Food sample, extractant type and volume, microextraction equipment and time, recovery, RSD and LOD of the proposed CD-assisted DLLME-SFOD method, and those of the other methods for HPLC determination of pyrethroids [25][26][27] are show in Table 3. Menthol used in the proposed method is more eco-friendly than the extractant used in the previously reported extraction methods for the pyrethroids determination.…”

Section: Comparison With Other Methodsmentioning

confidence: 99%

Cyclodextrin-assisted dispersive liquid-liquid microextraction based on solidification of floating organic droplets coupled with HPLC for the determination of pyrethroid residues in cereals

Jiang

Huang

et al. 2023

AChrom

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A simple, rapid, and environmentally friendly sample preparation method for pyrethroids determination in cereals using cyclodextrin-assisted dispersive liquid-liquid microextraction based on solidification of floating organic droplets coupled with high-performance liquid chromatography was established. The cereal samples were extracted with acetonitrile, cleaned up, and concentrated by green extractant menthol via γ-cyclodextrin assisted extraction process. The extractant menthol dispersed as fine droplets in the cyclodextrin solution and then solidified at room temperature for efficient extraction and convenient collection. The optimized method provided good linearity in the range of 0.01–10 mg kg−1 with limits of detection of 3.5–9.5 μg kg−1. The fortified recoveries of three pyrethroids (i.e., lambda-cyhalothrin, deltamethrin, and bifenthrin) in four cereals (i.e., rice, wheat, maize, and millet) at three levels were in the range of 77.6–101.6% with relative standard deviations of 0.6–6.6%. Overall, the proposed method can be successfully applied for the determination of pyrethroids in cereals.

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“…Many analytical techniques such as HPLC [6,7], GC [8], HPLC-MS [9], and GC-MS [10][11][12] have been applied for the measurement of pesticides. Due to complexity of real samples as well as the trace amount of analytes, analysis of real samples is always difficult, tedious, and laborious.…”

Section: Introductionmentioning

confidence: 99%

Riboflavin as a green sorbent in dispersive micro‐solid‐phase extraction of several pesticides from fruit juices combined with dispersive liquid–liquid microextraction

Abasalizadeh

Sorouraddin

Farajzadeh

et al. 2022

J of Separation Science

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A vortex‐assisted dispersive micro‐solid‐phase extraction procedure using a new and green sorbent was developed as a simple, fast, and efficient sample preparation method for the extracting five pesticides in several fruit juice samples. In this study, for the first time, riboflavin was used as an efficient sorbent. A few milligrams of riboflavin was directly added into the aqueous solution containing the analytes to adsorb them. After adsorption the analytes, they were desorbed and more concentrated by a dispersive liquid–liquid microextraction procedure. The influence of several effective parameters such as amount of riboflavin, pH, vortex time, eluent nature and volume, and extraction solvent type and volume on the extraction efficiency was investigated. In optimal conditions, linear ranges of the calibration curves were broad. The limits of detection and quantification were attained in the ranges of 0.56–1.5 and 1.9–0.52 ng mL−1, respectively. The proposed method demonstrated to be suitable for concurrent extraction of the studied pesticides in various fruit juice samples with high enrichment factors (320–360) and precision (relative standard deviation ≤7.8% for intra‐ [n = 6] and interday [n = 4] precisions at a concentration of 25 ng mL−1 of each pesticide).

show abstract

Sequential extraction and enrichment of pesticide residues in Longan fruit by ultrasonic-assisted aqueous two-phase extraction linked to vortex-assisted dispersive liquid-liquid microextraction prior to high performance liquid chromatography analysis

Cited by 28 publications

References 43 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

Cyclodextrin-assisted dispersive liquid-liquid microextraction based on solidification of floating organic droplets coupled with HPLC for the determination of pyrethroid residues in cereals

Riboflavin as a green sorbent in dispersive micro‐solid‐phase extraction of several pesticides from fruit juices combined with dispersive liquid–liquid microextraction

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