Field dissipation and health hazard assessment of Fenhexamid on Egyptian grapes

Malhat, Farag; Sharkawi, Haytham M. El; Loutfy, Naglaa; Ahmed, Mohamed Tawfic

doi:10.1080/02772248.2014.980130

Cited by 23 publications

(4 citation statements)

References 17 publications

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“…A similar t 1/2 to that found in our results was observed in a study of the dissipation rate of methomyl in cabbage and tomato (Othman et al, 1987), although studies made in grape showed a higher t 1/2 than ours (Kaushik et al, 2006). Diff erent species, weather conditions, the physical and chemical properties of pesticides, method and rate of application may be responsible for the diff erent dissipation rates of this compound (Romeh and Mekky, 2009;Malhat et al, 2012bMalhat et al, , 2014c. In the fi eld, besides the eff ect of some physical and chemical factors such as light, heat, pH and moisture (Agnihothrudu and Muraleedharan, 1990;Chen et al, 1987;Cosby et al, 1972;Miller and Donaldson, 1994;Malhat, 2012) on the degradation of pesticides, growth dilution factor might play a signifi cant role in the degradation of methomyl residues (Agnihothrudu and Muraleedharan, 1990; Bisen and Ghosh Hajara, 2000;Chen and Wan, 1988;Khay et al, 2008;Cabras et al, 1990, Malhat, 2013.…”

Section: Dissipation Behaviour In Tomatomentioning

confidence: 99%

Degradation profile and safety evaluation of methomyl residues in tomato and soil

Malhat

Watanabe

Youssef

2015

Hellenic Plant Protection Journal

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Summary A high performance liquid chromatography with the photodiode array detector (HPLCDAD) analytical method was developed to determine the residue levels and investigate the dissipation pattern and safety use of methomyl in tomato and soil. Methomyl residues were extracted from tomato and soil samples with ethyl acetate. The extract was cleaned up with the QuEChERS method. The results showed that the average recoveries were in the range of 87.1-94.5%, with RSD of 6.9-11.2%. Limits of detection (LOD) and quantification (LOQ) were 0.005 and 0.007 mg/kg, respectively. The residue levels of methomyl were best described to first order rate kinetics and half-lives ranged from 1.34 to 1.8 days in tomato and soil, respectively. The theoretical maximum residue contributions for methomyl on tomato were found to be less than the maximum permissible intake values even on zero days, therefore consumer health risks are minimal at the recommended dose on tomato.

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Section: Dissipation Behaviour In Tomatomentioning

confidence: 99%

Degradation profile and safety evaluation of methomyl residues in tomato and soil

Malhat

Watanabe

Youssef

2015

Hellenic Plant Protection Journal

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“…The dietary risk is considered within the acceptable risk for human health if HQ < 1 and TMDI < MPI. However, HQ > 1 represents a higher risk to consumers (Ludwicki et al, 2015; Malhat et al, 2014).

HQ (() %) goodbreak= \frac{EDI}{ADI} goodbreak\times 100

…”

Section: Methodsmentioning

confidence: 99%

Dissipation pattern and dietary risk assessment of some commonly used insecticides on tomato (Solanum lycopersicum L.)

Singh

Dubey

Katna

et al. 2022

Biomedical Chromatography

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Pesticide residue in food commodities is a serious concern in relation to consumer safety and also the most significant barrier in the trade of food commodities. The dissipation pattern of four insecticides, namely novaluron, λ‐cyhalothrin, imidacloprid, and fenazaquin, was evaluated on tomato fruits and cropped soil. The residues were extracted using the QuEChERS analytical method and quantized using a gas chromatograph with electron capture detector, gas chromatograph mass spectrometer, and high‐performance liquid chromatography with photo diode array detector. The analytical method was validated using parameters like recovery, linearity, accuracy, matrix effect, and specificity, with limit of detection and limit of quantitation established to be 0.01 and 0.05 mg/kg, respectively, for all the pesticides. The average initial deposits (samples collected after 2 h of application) at the recommended dose of novaluron, λ‐cyhalothrin, imidacloprid, and fenazaquin were 0.593, 0.293, 0.227, and 0.431 mg/kg on tomato fruits, respectively, and were below the limit of quantification in soil. The pre‐harvest interval of 17, 8, 1, and 13 days was suggested for novaluron, λ‐cyhalothrin, imidacloprid, and fenazaquin on tomato, respectively. Risk assessment studies revealed that all pesticides under study are safe and do not pose any threat to humans as theoretical maximum dietary intake is less than the maximum permissible intake and acceptable daily intake.

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“…ADI was considered 0.02 mg/ kg bw (body weight) for cypermethrin and 0.03 mg/kg bw for Profenofos (CODEX alimentarius, 2020). Health risk index more than 1 is considered as unsafe for human health (Darko and Akoto, 2008;Malhat et al, 2014) and Health Index (HI) <100% represents an acceptable risk to human health (Malhat et al, 2017;Qin et al, 2020).…”

Section: Health Risk Index (Hri)mentioning

confidence: 99%

Persistence, dissipation and health risk assessment of combi-product profenofos and cypermethrin in/on sapota under sub-tropical agro-climatic conditions in India

Solanki¹,

Singh²,

Kansara

et al. 2021

Not Sci Biol

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Sapota, a prominent and economically important fruit crop of India is susceptible to several species of insect and mite pests. Several pesticides formulations are used to control the pest damage in sapota. The present investigation was aimed to study the dissipation and persistence behaviour of combi-product profenofos 40% + cypermethrin 4% (44EC) at the standard dose (SD) (1162 g a.i. ha-1+106 g a.i. ha-1) and double to standard dose (2×SD) (2324 g a.i. ha-1+212 g a.i. ha-1) in/on sapota under tropical agro-climatic conditions of South Gujarat in India. Prior to quantitative analysis of pesticide residue on Gas chromatography with electron captured detector (GC-ECD), the modified Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) based method was validated on its accuracy, precision, linearity and sensitivity. Profenofos persisted in sapota up to 30 days with the half-lives of 5.65 and 7.34 days at SD and 2×SD, respectively. Cypermethrin dissipated at a rapid pace and was below quantitation limit (BQL) on 7 days at either dose of application; the half-life values recorded were 3.27 and 4.43 days at SD and 2×SD, respectively. This is the first case study that reflects 14 days as a waiting period after the last spray of combi-product (44EC) at standard dose facilitates the residue-free sapota fruits. Further, the health risk index (HRI<1) and Health Index (HI %< 100%) indicates that the application of combi-product profenofos 40% + cypermethrin 4% (44EC) at standard dose could not pose any health risk to Indian consumers.

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Field dissipation and health hazard assessment of Fenhexamid on Egyptian grapes

Cited by 23 publications

References 17 publications

Degradation profile and safety evaluation of methomyl residues in tomato and soil

Degradation profile and safety evaluation of methomyl residues in tomato and soil

Dissipation pattern and dietary risk assessment of some commonly used insecticides on tomato (Solanum lycopersicum L.)

Persistence, dissipation and health risk assessment of combi-product profenofos and cypermethrin in/on sapota under sub-tropical agro-climatic conditions in India

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