Residual pattern of fenhexamid on pepper fruits grown under greenhouse conditions using HPLC and confirmation via tandem mass spectrometry

Hem, Lina; Choi, Jeong‐Heui; Park, Jong-Hyouk; Mamun, M. I. R.; Cho, Soon‐Kil; El‐Aty, A. M. Abd

doi:10.1016/j.foodchem.2010.11.147

Cited by 18 publications

(10 citation statements)

References 17 publications

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“…At the end of the experimental period (21 days), the grape fruits contained a residue amount of 0.1 mg/kg. A similar trend of results was obtained for fenhexamid on strawberry and pepper (Angioni et al 2004;Hem et al 2011). Usually, pesticides degradation in plant in addition to effects of some physical and chemical factors like light, heat, pH, and moisture, growth dilution factor might have played a significant role (Malhat et al 2014).…”

Section: Dissipation and Residue Analysis Of Fenhexamidsupporting

confidence: 76%

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Field dissipation and health hazard assessment of Fenhexamid on Egyptian grapes

Malhat¹,

Sharkawi

Loutfy

et al. 2014

Toxicological & Environmental Chemistry

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Dissipation behavior and hazard assessment of the fungicide fenhexamid applied to grapes were investigated under climatic conditions in Egypt. Fenhexamid residues were extracted from grape samples with ethyl acetate. The extract was cleaned up by QuEChERS (quick, easy, cheap, effective, rugged, and safe) method, and determined by gas chromatographic method (GC-mECD). The average recoveries ranged between 94.2% and 99.4% with associated relative standard deviation not exceeding 12%. The estimated limit of quantification for fenhexamid was 0.1 mg/kg. The field results showed that fenhexamid dissipated rapidly from grapes and had a half-life of approximately 4.21 days. Hazard assessment was evaluated by using the hazard quotient (HQ). Data showed that the HQ value was significantly less than HQ D 1. Results indicate that hazard of fenhexamid use in grape even at 1.5-fold higher than recommended dosage was negligible to humans. This study could provide guidance for safe and reasonable use of fenhexamid in grapes and prevent health problems to consumers. However, further hazard assessment studies are needed to ascertain the hazard of fenhexamid residues on grape to vulnerable groups, including children, pregnant women, and elderly consumers.

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Section: Dissipation and Residue Analysis Of Fenhexamidsupporting

confidence: 76%

“…The calculated half-life was 4.2 days. The results reported by Hem et al (2011) and Angioni et al (2004) noted half-lives of 4.7 and 5 days, respectively, for fenhexamid in pepper and strawberry.…”

Section: Dissipation and Residue Analysis Of Fenhexamidmentioning

confidence: 87%

Field dissipation and health hazard assessment of Fenhexamid on Egyptian grapes

Malhat¹,

Sharkawi

Loutfy

et al. 2014

Toxicological & Environmental Chemistry

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“…The equation of calibration curve was obtained by plotting peak areas in 'y' axis against concentrations of ECZA in 'x' axis (Hem et al, 2011) (CAC/GL 40, 1993).…”

Section: Methods Validationmentioning

confidence: 99%

Establishment of Analytical Method for Residues of Ethychlozate, a Plant Growth Regulator, in Brown Rice, Mandarin, Pepper, Potato, and Soybean Using HPLC/FLD

Lee¹,

Lee²,

Chae³

et al. 2015

Korean Journal of Environmental Agriculture

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BACKGROUND: Ethychlozate (ECZ) is a plant growth regulator of synthetic auxin for agricultural commodities (ACs). Accurate and sensitive method to determine ECZ in diverse ACs on global official purpose is required to legal residue regulation. As the current official method is confined to the limited type of crops with poor validation, this study was conducted to improve and extend the ECZ method using high-performance liquid chromatography (HPLC) in all the registered crops with method verification. METHODS AND RESULTS: ECZ and its acidic metabolite (ECZA) were both extracted from acidified samples with acetone and briefly purified by dichloromethane partition. ECZ was hydrolyzed to form ECZA and the combined ECZA was finally purified by ion-associated partition including hexane-washing. The instrumental quantitation was performed using HPLC/ FLD under ion-suppression of ECZA with no interference by sample co-extractives. The average recoveries of intra-and inter-day experiment

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“…The decline pattern of pesticides depends on many factors, including chemical and photo‐chemical degradation, cultivated species, pesticide formulation class, climatic conditions, volatilization and application mode (Kabir et al, ; Papadopoulos, Kotopoulon, Papadopoulos, & Hatziphanis, ; Sur, Pal, Banerjee, Dityachaudhury, & Bhattacharyya, ). The decline pattern of a specific pesticide is valid only under specific conditions for reported crops (Hem et al, ). Therefore, a pesticide decline pattern may vary for different crops and conditions.…”

Section: Introductionmentioning

confidence: 99%

Chromatographic determination, decline dynamic and risk assessment of sulfoxaflor in Asian pear and oriental melon

Kabir

El‐Aty

Rahman

et al. 2017

Biomedical Chromatography

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The dissipation pattern of sulfoxaflor in Asian pear cultivated in an open field conditions and in oriental melon grown under plastic house conditions was each studied in two different locations. Residues in field-treated samples were determined using liquid chromatography coupled with an ultraviolet detector and confirmed by liquid chromatography-tandem mass spectrometry. A calibration curve for sulfoxaflor was linear over the concentration range 0.1-5.0 mg/L, with a coefficient of determination of 0.9999. The limits of detection and quantification (LOQ) were 0.007 and 0.02 mg/kg, respectively. Recoveries at three fortification levels (LOQ, 10 × LOQ and maximum residue limit) ranged from 70.5 to 86.2%, with a relative standard deviation ≤5.8%. The dissipation half-lives were 10.8 and 7.9 days in pear and 5.4 and 5.9 days in oriental melon, at sites 1 and 2, respectively. Based on a pre-harvest residue limit curve, it was predicted that, if the residues at 10 days before harvest in Asian pear are <0.54/0.61 mg/kg and those in oriental melon are <1.43/1.26 mg/kg, then the residue level will be below the maximum residue limit at harvest. Risk assessment at zero days showed a percentage acceptable daily intake of 10.80% in Asian pear and 1.77 and 1.55% in oriental melon, for sites 1 and 2, respectively. These values indicate that the fruits are safe for consumption.

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Residual pattern of fenhexamid on pepper fruits grown under greenhouse conditions using HPLC and confirmation via tandem mass spectrometry

Cited by 18 publications

References 17 publications

Field dissipation and health hazard assessment of Fenhexamid on Egyptian grapes

Field dissipation and health hazard assessment of Fenhexamid on Egyptian grapes

Establishment of Analytical Method for Residues of Ethychlozate, a Plant Growth Regulator, in Brown Rice, Mandarin, Pepper, Potato, and Soybean Using HPLC/FLD

Chromatographic determination, decline dynamic and risk assessment of sulfoxaflor in Asian pear and oriental melon

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