Determination of dimethoate, lambda-cyhalothrin and malathion residues in guava fruits using GCMS-tandem mass spectrometry

Devi, Meenakshi; Duhan, Anil; Kumari, Beena; Yadav, G. S.

doi:10.5958/0974-0112.2016.00047.5

Cited by 4 publications

(7 citation statements)

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“…Reports on the dissipation of dimethoate in fruit crops like mango, guava, citrus, pomegranate are documented and available but could not get for grapes. Pappas et (Khan et al, 2009;Devi et al, 2016). The variation in the degradation pattern of dimethoate in different crops is due to the association of pesticide chemistry, plant architecture and environmental conditions in that particular crop ecosystem.…”

Section: Resultsmentioning

confidence: 99%

“…However, a survey conducted in major grape growing districts of Tamil Nadu revealed that 93.33% of farmers are using dimethoate as a plant protection input to mitigate the pest problem in grapes (Jayabal et al, 2020). Dimethoate dissipation has been widely investigated in various fruit crops viz., mango (Bhattacherjee and Dikshit, 2016), pomegranate (Utture et al, 2012) and guava (Khan et al, 2009;Devi et al, 2016). It is one of the most widely used insecticides in Indian viticulture and globally for pest management (Moyer and Neal, 2014;Patil et al, 2017;Preetha and Stanley, 2020).…”

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confidence: 99%

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Persistence and Degradation Behaviour of Dimethoate in Grapes

Reddy

Krishnan

Paramasivam

et al. 2022

ije

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Through a field experiment, the dissipation pattern of dimethoate in grapes was evaluated during December 2020 - February 2021. Dimethoate 30%EC was sprayed twice at ten-days interval at recommended (X) dose (445 g a.i ha-1) and double the recommended (2x) dose (890 g a.i ha-1). The samples were collected from 0 (2hr), 1, 3, 5, 7, 10, 15 and 20 days or till degradation to below detectable level (BDL) and at harvest time. The residues were extracted by the modified QuEChERS method and analyzed by LCMS. The method performance was satisfactory in terms of SANTE guidelines and with good linearity (r2>0.99). The mean total dimethoate residue including omethoate was 1.047 and 2.168 mg kg-1 at x and 2x doses, respectively with half-lives of 5.47 and 5.59 days. The calculated Risk Quotient (RQ) at both x and 2x dose with Good Agricultural Practices (GAP) indicated that for dimethoate these are not safe for human health due to the intake of residue.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Persistence and Degradation Behaviour of Dimethoate in Grapes

Reddy

Krishnan

Paramasivam

et al. 2022

ije

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“…The dimethoate residues and its metabolite omethoate were dissipated to a half (t1/2) of its concentration at 3.07 and 3.34 days at the recommended and double the recommended dose from curry leaf, respectively. The half‐life of dimethoate was two days in mango fruits at the recommended dose [28]; for tomato, 6.72 and 8.15 days at recommended and double the recommended amount, respectively [29], for chilli 4.70 and okra 5.21 days evident from a previous study [23]. The more extended variation in half‐life could be due to the difference in the rate of insecticide penetration into the surface (smooth or rough) of fruits and vegetables.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous determination of dimethoate and its metabolite omethoate in curry leaf using LC‐MS/MS and risk assessment

Pasar

et al. 2022

J of Separation Science

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This study presents the method development, validation, and simultaneous determination of dimethoate and its metabolite omethoate in curry leaf. Samples were extracted following modified quick, easy, cheap, effective, rugged, and safe extraction protocol and analyzed using liquid chromatography‐tandem mass spectrometry. The limit of quantification in the matrix was 0.005 μg g−1 for dimethoate and omethoate. Extraction using acetonitrile recorded the average recoveries in the range of 82.25 to 112.97% for dimethoate and 85.57 to 107.22% for omethoate at 0.005, 0.025 and 0.050 μg g−1 fortification levels and relative standard deviation less than 5%. Similarly, the relative standard deviation values for intraday (Repeatability) and interday (Reproducibility) tests were less than 15%. Dissipation kinetics of dimethoate 30% emulsifiable concentrate at 200 and 400 g a.i h−1 recorded initial deposits of 5.20 and 10.05 μg g−1 and 0.33 and 0.48 μg g−1 for dimethoate and omethoate, respectively, and half‐life of 3.07 and 3.34 days. The estimated hazard index value found more than one at a day after dimethoate application. It is not safe for consumer health to use curry leaves in the initial days after application.

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“…Awasthi [15] found that washing mangoes with tap water removed 66-68% of the dimethoate and fenitrothion. Washing guava with tap water reduced dimethoate residues by 42.5-45.9% [16].…”

Section: Effect Of Processing On the Level Of Pesticide Residues In V...mentioning

confidence: 99%

“…Other fruit crops viz., mangoes where 66% dimethoate residues were removed by tap water washing [15], 45.9% in guava [16]. Washing with salt water (2%) solution for 10 min was recorded as an effective decontaminant in removal of acephate, chlorpyrifos, quinalphos, bifenthrin residues (51.80-72.80%), acephate (72.74%), chlorpyrifos (67.52%) and quinalphos (65.0%), respectively in grapes [17][18][19][20], imidacloprid (61.89%) in field bean [21,22], tetraniliprole (61.49%) in tomato [23] and NaCl (5%) removed 90% of quinalphos and profenofos in chili [24].…”

Section: Effect Of Processing On the Level Of Pesticide Residues In V...mentioning

confidence: 99%

Perspective Chapter: Current Situation of Insecticide Residues in Food Commodities and Possible Strategies for Management of Residues

Kanda Kishore Reddy,

Maneesha,

Babu Naik

et al. 2023

Insecticides - Advances in Insect Control and Sustainable Pest Management

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Pesticides have evolved into a crucial instrument in agriculture’s evolution as a plant protection agent for increasing food output. Moreover, pesticides contribute significantly by preventing a number of terrible diseases. However, both occupational and environmental pesticide exposure can lead to a number of health issues in people. It has been noted that pesticide exposures are becoming more and more associated with immune system suppression, hormone disruption, lowered intellect, abnormalities in reproduction, and cancer. Because of the great demand for farm produce and their lack of awareness of the hazardous consequences of pesticide residues in food, some farmers do not wait long enough for the residues to wash off after spraying before harvesting. As a result, residues in food products have appeared as a result of increased pesticide use in agriculture. Some of the primary tactics for reducing human exposure to pesticides are pesticide safety, regulation of pesticide usage, appropriate application technology, and integrated pest management.

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Determination of dimethoate, lambda-cyhalothrin and malathion residues in guava fruits using GCMS-tandem mass spectrometry

Cited by 4 publications

References 0 publications

Persistence and Degradation Behaviour of Dimethoate in Grapes

Persistence and Degradation Behaviour of Dimethoate in Grapes

Simultaneous determination of dimethoate and its metabolite omethoate in curry leaf using LC‐MS/MS and risk assessment

Perspective Chapter: Current Situation of Insecticide Residues in Food Commodities and Possible Strategies for Management of Residues

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