Determination of the residue behavior of isocycloseram in Brassica oleracea and soil using the QuEChERS method coupled with HPLC

Luo, Junhua; Bian, Chuanfei; Rao, Lei; Zhou, Wenwen; Li, Yuqi; Li, Baotong

doi:10.1016/j.foodchem.2021.130734

Cited by 28 publications

(14 citation statements)

References 25 publications

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“…In some cases, ultra-high-performance liquid chromatography (UHPLC) coupled with MS/MS was employed for high throughput, especially when hundreds of pesticides were analyzed simultaneously [49,50]. Less sensitive techniques for pesticide residue analysis in soil samples include HPLC with traditional detectors, such as diode array detectors (DADs) [17,35], fluorescence detectors (FLDs) [53], ultraviolet (UV) [52] and GC with electron-capture detectors (ECDs) [16,25,29,36], and nitrogen phosphorous detectors (NPDs) [36] or flame photometric detectors (FPDs) [25] for OCPs and OPPs, respectively. In this context, Łozowicka et al [36] studied the extent and variability of the matrix effects of pesticides using GC with different types of detectors (MS/MS and µECD/NPD).…”

Section: Quechers Applications To Pesticide-residue Analysis In Soilsmentioning

confidence: 99%

“…In this context, different sample amounts have been extracted after proper homogenization through mechanical processes, such as grinding and sieving. Methods involving 1 g [53], 2 g [20], 2.5 g [16], 5 g [52], 10 g [51], 15 g [17], and 20 g [33] of soil sample have been developed for pesticide-residue analysis, although most authors opted for 5 or 10 g. In all cases, the amount of sample used can be considered relatively low, which in turn is one of the great inherent benefits of the QuEChERS method. However, it must be considered that the extraction is normally carried out in 50-milliliter centrifuge tubes.…”

Section: Modifications Of the Sample Amountmentioning

confidence: 99%

“…As disadvantages, ACN has a large solvent-expansion volume for GC analysis, and it is expensive. However, ACN is still the most commonly employed extraction solvent in the QuEChERS method for pesticideresidue analysis in soils using relatively small volumes, usually between 5 and 15 mL, with a sample-to-solvent ratio of 1 g per mL [17,22,23,44] or 0.5 g per mL [24,27,38,43,52]. The optimization step has also included yield experiments with acidified ACN.…”

Section: Modifications Of the Extraction-solvent Typementioning

confidence: 99%

“…However, other combinations of the same salts, or even different salts, have been assayed to promote ACN/water-phase separation during extraction. In this sense, the combination of anhydrous MgSO 4 and NaCl in 1:1 [39] or 2:1 [32,34,52,53,57] ratios (w/w) have also been used as alternatives to the original ratio, and both salts have even been successfully used alone. As an example, García Pinto et al [16] performed a series of experiments with different combinations of anhydrous MgSO 4 with and without NaCl for the extraction of chloroform, 1,2-dichlorobenzene, and hexachlorobenzene (HCB).…”

Section: Modifications Of the Salting-out Effectmentioning

confidence: 99%

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Pesticide-Residue Analysis in Soils by the QuEChERS Method: A Review

2022

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Pesticides are among the most important contaminants worldwide due to their wide use, persistence, and toxicity. Their presence in soils is not only important from an environmental point of view, but also for food safety issues, since such residues can migrate from soils to food. However, soils are extremely complex matrices, which present a challenge to any analytical chemist, since the extraction of a wide range of compounds with diverse physicochemical properties, such as pesticides, at trace levels is not an easy task. In this context, the QuEChERS method (standing for quick, easy, cheap, effective, rugged, and safe) has become one of the most green and sustainable alternatives in this field due to its inherent advantages, such as fast sample preparation, the minimal use of hazardous reagents and solvents, simplicity, and low cost. This review is aimed at providing a critical revision of the most relevant modifications of the QuEChERS method (including the extraction and clean-up steps of the method) for pesticide-residue analysis in soils.

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Section: Quechers Applications To Pesticide-residue Analysis In Soilsmentioning

confidence: 99%

Section: Modifications Of the Sample Amountmentioning

confidence: 99%

Section: Modifications Of the Extraction-solvent Typementioning

confidence: 99%

Section: Modifications Of the Salting-out Effectmentioning

confidence: 99%

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Pesticide-Residue Analysis in Soils by the QuEChERS Method: A Review

2022

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“…QuEChERS can achieve better purification with the addition of a small amount of adsorbent to the extraction solution to adsorb impurities. The operation of QuEChERS, which is currently a common purification method for fruits and vegetables, is fast and simple [ 33 , 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Seven Pesticides and Metabolite Residues in Litchi and Longan through High-Performance Liquid Chromatography-Tandem Mass Spectrometry with Modified QuEChERS

Wang

He³

et al. 2022

Molecules

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This study established a QuEChERS high-performance liquid chromatography/tandem triple-quadrupole mass spectrometry method for determining azoxystrobin, pyraclostrobin, picoxystrobin, difenoconazole, chlorantraniliprole, imidacloprid, and cyantraniliprole and its metabolite (IN-J9Z38) in litchi and longan, and applied this method to the real samples. The residues in samples were extracted with acetonitrile and purified with nano-ZrO2, C18, and PSA. The samples were then detected with multireactive ion monitoring and electrospray ionization in the positive ion mode and quantified using the external matrix-matched standard method. The results showed good linearities for the eight analytes in the range of 1–100 μg/L, with correlation coefficients (r2) of >0.99. The limit of quantification was 1–10 μg/kg, and the limit of detection was 0.3–3 μg/kg. Average recovery from litchi and longan was 81–99%, with the relative standard deviation of 3.5–8.4% at fortified concentrations of 1, 10, and 100 μg/kg. The developed method is simple, rapid, efficient, and sensitive. It allowed the rapid screening, monitoring, and confirming of the aforementioned seven pesticides and a metabolite in litchi and longan.

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Dissipation, residue distribution, and risk assessment of ethiprole and its metabolites in rice under various open field conditions

Dong

2023

J Sci Food Agric

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BACKGROUNDEthiprole has been registered to control planthoppers in rice fields for many years in Asia. However, its dissipation and residues in rice under natural field conditions and health hazards are largely unclear. In the present study, a modified QuEChERS (i.e. Quick Easy Cheap Effective Rugged Safe) and high‐performance liquid chromatography‐tandem mass spectrometry method was established to detect ethiprole and its metabolites, ethiprole amide and ethiprole sulfone, in brown rice, rice husks, and rice straw. The field experiments were implemented in 12 representative provinces of China under Good Agricultural Practices aiming to investigate the fate and terminal residues of ethiprole and its metabolites in rice. Finally, the dietary risk of ethiprole was evaluated.RESULTSThe average recoveries of these analytes in all matrices were 86.4–99.0% with a repeatability of 0.575–9.38%. The limits of quantification for each compound were 0.01 mg kg−1. Dissipation of ethiprole followed the single first‐order, first + first‐order, and first‐order multi‐compartment kinetic models with a half‐life of 2.68–8.99 days in rice husks. The dissipation half‐life of ethiprole combining all metabolites was 5.20–16.2 days in rice husks. The terminal residues of ethiprole and its metabolites at preharvest intervals of 21 days were < 0.011, 0.25, and 0.20 mg kg−1 in brown rice, rice husks, and rice straw, respectively. Ethiprole amide was undetectable in all matrices, and the risk quotient of ethiprole was far less than 100%.CONCLUSIONEthiprole rapidly converted to ethiprole sulfone in rice, and ethiprole and ethiprole sulfone mainly remained in rice husks and straws. The dietary risk of ethiprole was acceptable for Chinese consumers. © 2023 Society of Chemical Industry.

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Determination of the residue behavior of isocycloseram in Brassica oleracea and soil using the QuEChERS method coupled with HPLC

Cited by 28 publications

References 25 publications

Pesticide-Residue Analysis in Soils by the QuEChERS Method: A Review

Pesticide-Residue Analysis in Soils by the QuEChERS Method: A Review

Simultaneous Determination of Seven Pesticides and Metabolite Residues in Litchi and Longan through High-Performance Liquid Chromatography-Tandem Mass Spectrometry with Modified QuEChERS

Dissipation, residue distribution, and risk assessment of ethiprole and its metabolites in rice under various open field conditions

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