Different techniques for determination of imidacloprid insecticide residues

Farouk, Maha; Hussein, Lobna A.; Azab, Noha F. El

doi:10.1080/03067319.2013.782489

Cited by 9 publications

(5 citation statements)

References 22 publications

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“…The LC-MS/MS results revealed that imidacloprid was transformed to 6−CNA via guanidine and 5−hydroxy imidacloprid intermediates ( Figure 8 ). These findings are in agreement with previous studies, which proposed possible microbial metabolites, including imidacloprid−guanidine, imidacloprid−guanidine olefin and imidacloprid−urea [ 54 ]. The biodegradation of imidacloprid by a consortium of two Bacillus species was followed by the formation of 6−CNA and imidacloprid-nitrosoguanidine metabolites [ 40 ], while the formation of olefin and 5-hydroxy imidacloprid was also detected during the course of biodegradation [ 55 , 56 ].…”

Section: Resultssupporting

confidence: 93%

Bioremediation of Neonicotinoid Pesticide, Imidacloprid, Mediated by Bacillus cereus

et al. 2023

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Imidacloprid, a toxic pesticide of the chloronicotinyl category, is employed extensively in agricultural fields, and its exposure causes serious health issues. Biodegradation is considered to be a green and economical approach to remediate pesticides. Herein, imidacloprid degradation efficiency of Bacillus sp. is highlighted, among which Bacillus cereus exhibited the greatest degradation; optimization of experimental variables (pH, imidacloprid and agitation time) via Box–Behnken factorial design and analysis of variance (ANOVA) revealed 92% biodegradation at the initial substrate concentration of 0.03 mM, aerobically in 11 days under favorable pH 7. The subsequent metabolites, identified through liquid chromatography–mass spectrometry, were 5-hydroxy imidacloprid, imidacloprid-guanidine and 6-chloronicotinic acid.

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Section: Resultssupporting

confidence: 93%

Bioremediation of Neonicotinoid Pesticide, Imidacloprid, Mediated by Bacillus cereus

et al. 2023

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“…A green analysis is considered excellent if eco-scale score more than 75, acceptable if more than 50, and if less than 50 supposed inadequate [ 35 ]. Eco-Scale score was computed for the suggested methods and the reported methods, and the results proved that the proposed TLC method for IMD exceled over the reported TLC method [ 36 ] as a greener alternative for determination of IMD, as in the reported TLC-densitometric method mobile phase used was consisting of toluene: acetonitrile (7:3 v/v) and detection at 270.0 nm. For DLM, although the eco-scale score of the proposed method was less than eco- scale score of the reported method [ 37 ], the proposed method is still considered ecofriendly as the green analysis is considered excellent if eco-scale score more than 75.…”

Section: Resultsmentioning

confidence: 78%

Chitosan nanoparticles modified TLC-densitometry for determination of imidacloprid and deltamethrin residues in plants: greenness assessment

et al. 2023

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Two thin layer chromatography (TLC) methods have been developed for the determination of pesticides residues of imidacloprid (IMD) and deltamethrin (DLM) in thyme and guava leaves. In the two methods, the used stationary phase was silica gel 60 F254 plates impregnated in chitosan nanoparticles (ChTNPs) 0.5% to improve separation using a green developing system consists of isopropyl alcohol for IMD and n-hexane-toluene-ethylacetate for DLM. The two pesticides were determined quantitatively, after TLC separation, at wavelengths 270.0 nm for IMD and 230.0 nm for DLM. Validation of both approaches was carried out in agreement with the guidelines of International Conference on Harmonization (ICH) and found to be selective, reliable and reproducible. Limits of detection of IMD and DLM were 0.002 and 0.00116 μg/spot, respectively. The newly developed TLC methods were used to monitor the pre-harvest interval estimation. Analytical eco-scaling depending on penalty points for IMD was calculated and showed that this method was eco-friendlier than the reported one. Graphical Abstract

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“…As Figure 1 shows, the highest absorbance peak of imidacloprid was detected in spectra; which is 270 nm (Fig. 1, left) and consisted with the identifying wavelength reported previously [27][28]. Due to that the highest peak presents the highest absorbance; thus, the 270nm was applied for detecting the imidacloprid in water samples.…”

Section: Scanning Spectra and Calibration Curve Of Bs And Impmentioning

confidence: 67%

Detection of imidacloprid and Bisphenol-S by Solid Phase Extraction (SPE) coupled with UV-VIS spectrometer and LC-MS

Zhang

Jiang

2019

Biointerface Res Appl Chem

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Solid-phase extraction (SPE) and UV/Vis-spectrometer are acknowledged as economical and efficient technique analytical techniques and applied in analyzing target organic compounds in water and other aqueous samples. The present study suggested imidacloprid (at 270nm) and bisphenol-S (at 259nm) can be detected and quantitatively measured via UV-vis spectrometer. The assay was linear with a good coefficient of correlation for both imidacloprid (R2= 0.9992) and bisphenol-S (R2 = 0.9996). Based on SPE coupled with UV-spectrometer, the recovery of IMP and BS were achieved at 93-97% and 86-116% respectively, which are close to that achieved by SPE coupled with liquid chromatography-mass spectrometer (LC-MS) analysis; 84-102% for imidacloprid and 83-92% for bisphenol-S.

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Different techniques for determination of imidacloprid insecticide residues

Cited by 9 publications

References 22 publications

Bioremediation of Neonicotinoid Pesticide, Imidacloprid, Mediated by Bacillus cereus

Bioremediation of Neonicotinoid Pesticide, Imidacloprid, Mediated by Bacillus cereus

Chitosan nanoparticles modified TLC-densitometry for determination of imidacloprid and deltamethrin residues in plants: greenness assessment

Detection of imidacloprid and Bisphenol-S by Solid Phase Extraction (SPE) coupled with UV-VIS spectrometer and LC-MS

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