Residues, dissipation and safety evaluation of chromafenozide in strawberry under open field conditions

Malhat, Farag; Badawy, H. M. A.; Barakat, Dalia A.; Saber, Ayman N.

doi:10.1016/j.foodchem.2013.11.110

Cited by 72 publications

(31 citation statements)

References 15 publications

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“…Therefore, to ensure food safety and environmental protection, investigations need to focus on proper use of pesticides in terms of authorization, registration, and compliance with maximum residue limits (MRL). Toward this end, field dissipation studies on pesticide persistence in foodstuffs and studies of pesticide residue behavior in agricultural fields are needed (Malhat et al 2014).…”

Section: Residues Half-life Times Dissipation and Safety Evaluatiomentioning

confidence: 99%

“…Further, a number of environmental factors, particularly temperature, precipitation (and humidity), and air movement (Gennari et al 1985), affect pesticide persistence. Other factors depend on the properties of the plant and plant species, the nature of the harvested crop, structure of cuticle, stage and rate of growth, and the general condition of the plant, in addition to the relationship between treated surface and its weight and living state of the plant surface (Khay, Choi, and Abd El-Aty 2008;Tewary et al 2005;Cabras et al 1990;Malhat 2012;Malhat et al 2014).…”

Section: Residue Analysismentioning

confidence: 99%

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Residues, half-life times, dissipation, and safety evaluation of the acaricide fenpyroximate applied on grapes

Malhat¹,

El-Mesallamy

Assy

et al. 2013

Toxicological & Environmental Chemistry

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A validated high-performance liquid chromatography-diode array detector method for simultaneous determination of the acaricide fenpyroximate on grape was developed. Estimated limit of detection and limit of quantification for fenpyroximate were 0.01 and 0.05 mg kg À1 , respectively. The intra-and inter-day precisions performed with relative standard deviation were better than 9.3% and 8%, respectively, while recoveries were in the range of 88.5%-100.4%. Residue levels of fenpyroximate in grape samples collected 10 days after field application were below the established maximum residue level values. The dissipation rates of fenpyroximate were described using first-order kinetics and its half-life, were approximately 3.5 days in grape. This study provides basic information for developing regulations to safeguard the use of fenpyroximate in grapes and prevent any potential health concerns for consumers.

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Section: Residues Half-life Times Dissipation and Safety Evaluatiomentioning

confidence: 99%

Section: Residue Analysismentioning

confidence: 99%

Residues, half-life times, dissipation, and safety evaluation of the acaricide fenpyroximate applied on grapes

Malhat¹,

El-Mesallamy

Assy

et al. 2013

Toxicological & Environmental Chemistry

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“…It is cultivated on commodity plantations both for the purposes of industrial processing and for direct consumption. Egypt has been among the top five strawberries producing countries since the year 2000 (Malhat et al, 2014). Also, apple orchard has been planted in the large area in Egypt.…”

Section: Introductionmentioning

confidence: 99%

Dissipation Behavior of Thiophanate-Methyl in Apple and Strawberry Fruits under Open Field Conditions

2017

Alexandria Science Exchange Journal: An International Quarterly

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Thiophanate-methyl is an effective fungicide on several food crops. In the present study, dissipation of residue levels of thiophanate-methyl in apple and strawberry fruits under open field conditions were studied using high performance liquid chromatography with diode array detection (HPLC-DAD).The extraction and clean-up were conducted by QuEChERS method. The limit of quantitation and detection were 0.01 and 0.003 mg/kg, respectively. The results suggest that the thiophanatemethyl dissipation curves followed the first order kinetics and its half-life values were (1.01) and (1.26) days for apple and strawberry, respectively. The residues in apple and strawberry were below the codex maximum residue limit (MRL) (0.5 and 0.1 mg/kg) after 8 and 4 days of the application, respectively.

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“…Only fomesafen, CSO and CSO 2 have been successfully recovered in the range of 70-120%, while the recoveries of clomazone and clethodim were lower than 70%. To our knowledge, clomazone and clethodim, with stronger polarity and water solubility (1100 and 5450 mg/L for clomazone and clethodim), were usually extracted with polar organic solvents such as acetonitrile [34,35]. Therefore, acetonitrile was selected to simultaneously extract for the five analytes in soybean, green soybean and soybean straw matrices.…”

Section: Optimization Of Sample Preparationmentioning

confidence: 99%

Simultaneous Analysis and Dietary Exposure Risk Assessment of Fomesafen, Clomazone, Clethodim and Its Two Metabolites in Soybean Ecosystem

Pang

2020

IJERPH

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A commercial formulation, 37% dispersible oil suspension (DOS) (fomesafen, clomazone, and clethodim), is being registered in China to control annual or perennial weeds in soybean fields. In this paper, a liquid chromatography tandem mass spectrometry method with QuEChERS (quick, easy, cheap, effective, rugged, and safe) sample preparation was developed for the simultaneous determination of fomesafen, clomazone, clethodim, and its two metabolites (CSO and CSO2) in soybean, green soybean, and soybean straw samples. The mean recoveries of our developed method for the five analytes in three matrices were ranged from 71% to 116% with relative standard deviations (RSDs) less than 12.6%. The limits of quantification (LOQs) were 0.01 mg/kg in soybean, 0.01 mg/kg in green soybean, and 0.02 mg/kg in soybean straw while the limits of detection (LODs) ranged from 0.018 to 0.125 μg/kg for these five analytes. The highest final residual amount of CSO2 in green soybean samples (0.015 mg/kg) appeared in Anhui, and the highest in soybean straw samples was 0.029 mg/kg in Guangxi, whilst the terminal residues of fomesafen, clomazone, clethodim and CSO were lower than LOQs (0.01 mg/kg) in all samples. Furthermore, these terminal residues were all lower than the maximum residue limits (MRLs) set by China (0.1 mg/kg for fomesafen and clethodim, 0.05 mg/kg for clomazone) at harvest. Additional chronic dietary risk was evaluated using a risk quotients (RQs) method based on Chinese dietary habits. The chronic dietary exposure risk quotients were 4.3 for fomesafen, 0.12 for clomazone, and 19.3 for clethodim, respectively, which were significantly lower than 100. These results demonstrated that the dietary exposure risk of fomesafen, clomazone, and clethodim used in soybean according to good agricultural practices (GAP) was acceptable and would not pose an unacceptable health risk to Chinese consumers. These results not only offer insight with respect to the analytes, but also contribute to environmental protection and food safety.

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Residues, dissipation and safety evaluation of chromafenozide in strawberry under open field conditions

Cited by 72 publications

References 15 publications

Residues, half-life times, dissipation, and safety evaluation of the acaricide fenpyroximate applied on grapes

Residues, half-life times, dissipation, and safety evaluation of the acaricide fenpyroximate applied on grapes

Dissipation Behavior of Thiophanate-Methyl in Apple and Strawberry Fruits under Open Field Conditions

Simultaneous Analysis and Dietary Exposure Risk Assessment of Fomesafen, Clomazone, Clethodim and Its Two Metabolites in Soybean Ecosystem

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