Investigation of Levels and Fate of Pyridalyl in Fruit and Vegetable Samples by Fast Gas Chromatography–Mass Spectrometry

Hrouzková, Svetlana; Andraščíková, Mária; Ghani, Sherif B. Abdel; Purdešová, Andrea

doi:10.1007/s12161-012-9508-1

Cited by 20 publications

(13 citation statements)

References 15 publications

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“…6) Pesticide residues in food are controlled and regulated by maximum residue limit (MRL) values that depend on the country or the regulating authority. 8) according to European Food Safety Authority, 8.6% of peas pods samples violated the MRL value in 2015. 9) In this study, the authors investigated the effect of using different application techniques on the characteristics of bifenthrin deposition on pea pods and leaves, e.g., droplet size and volume, homogeneity factor, vertical distribution of the droplets on the plant leaves, and the expected loss of spray solution.…”

Section: )mentioning

confidence: 99%

Effect of spray application techniques on spray deposits and residues of bifenthrin in peas under field conditions

Hanafi

Hindy

Ghani

2016

Journal of Pesticide Science

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Five spraying techniques were evaluated for the coverage of bifenthrin on peas under open field conditions. Ultra-low volume sprayer (ULVA) and Ground hydraulic motor with conventional spray gun (GMG) gave number mean diameters (NMDs) from 27 to 68 and from 33 to 73 N/cm 2 with volume mean diameter (VMD) from 50 to 120 and from 320 to 508, respectively. Homogeneity factor values were 2, 2, 2.5, 2.8, and 13.5 in ULVA, Domestic modification of the ground hydraulic motor sprayer with one nozzle (GMO), Ground hydraulic motor sprayer with vertical boom (GMV), Motorized knapsack mist blower sprayer (MKM) and GMG. The percentages of the lost spray in the ground were 23, 39, 21, 24, and 36% for ULVA, MKM, GMG, GMO and GMV, respectively. An analytical method was developed using QuEChERS and GC-ECD to determine the initial deposit of bifenthrin in pods and leaves. Initial deposits were from 0.006 to 0.05 mg/kg in pods and from 0.03 to 0.66 mg/kg in leaves. The most efficient technique was single nozzle Twinjet, followed by the motorized knapsack sprayer.

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Section: )mentioning

confidence: 99%

Effect of spray application techniques on spray deposits and residues of bifenthrin in peas under field conditions

Hanafi

Hindy

Ghani

2016

Journal of Pesticide Science

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“…To the best of our knowledge, no other information regarding pyridalyl residues on okra has been published. However, Hrouskova et al 2013, who studied the dissipation of pyridalyl on spring onions and strawberries following an application of 238 mL a.i./ha, reported half-lives of 0.27 and 5.99 days, respectively. The higher residues of pyridalyl on strawberries were probably due to the difference in surface area.…”

Section: Dissipation Of Pyridalyl (Nano and Commercial) In Okramentioning

confidence: 99%

Residue, dissipation, and safety evaluation of pyridalyl nanoformulation in Okra (Abelmoschus esculentus [L] Moench)

Saini

Gopal

Kumar

et al. 2015

Environ Monit Assess

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A comparative study on residues and rate of dissipation of a new nanoformulation of pyridalyl and commercial pyridalyl was carried out on okra under net house and field conditions. Okra crop was sprayed with commercial and nanoformulation of pyridalyl at recommended (75 g a. i./ha) and double the recommended dose (150 g a. i./ha) at the time of fruiting. Quantitation of residues of pyridalyl in okra was done by ultra high performance liquid chromatography over a period of 15 days, and recovery of the method ranged from 79 to 87 %. The half life calculated from the dissipation pattern of pyridalyl on okra for commercial and developed nanoformulation proved that residues of nanopyridalyl did not persist much longer than that of conventional formulation in net house as well as in field trials. The risk quotient value of pyridalyl in okra was significantly lower than 1, implying its negligible risk to the humans.

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“…To the best of our knowledge, no other information regarding pyridalyl residues on cauliflower has been published. However, Svetlana et al [10], who studied the dissipation of pyridalyl on spring onions and strawberries following an application of 238 mL a.i.·ha -1 , reported initial deposits of less than 3 mg·kg -1 , which declined to 1 mg·kg -1 in 7 days, with half-lives of 0.27 and 5.99 days, respectively. The higher residues on strawberries were probably due to the difference in surface area.…”

Section: Pyridalylmentioning

confidence: 99%

“…The higher residues on strawberries were probably due to the difference in surface area. Spray retention on onion leaves can also be difficult because of the vertical nature of the plant [10].…”

Section: Pyridalylmentioning

confidence: 99%

Residue patterns of indoxacarb and pyridalyl in treated cauliflower

Yoon¹,

Park²,

Moon³

et al. 2013

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Investigation of Levels and Fate of Pyridalyl in Fruit and Vegetable Samples by Fast Gas Chromatography–Mass Spectrometry

Cited by 20 publications

References 15 publications

Effect of spray application techniques on spray deposits and residues of bifenthrin in peas under field conditions

Effect of spray application techniques on spray deposits and residues of bifenthrin in peas under field conditions

Residue, dissipation, and safety evaluation of pyridalyl nanoformulation in Okra (Abelmoschus esculentus [L] Moench)

Residue patterns of indoxacarb and pyridalyl in treated cauliflower

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