Dissipation of Cypermethrin in Bean and Cauliflower

Nahar, Nilufar; Hossain, Mohammad Motaher; Mahmud, Nashir Uddin Al; Shoeb, Mohammad; Latifa, Gulshan Ara; Kabir, Kamal Humayun

doi:10.3329/dujs.v64i1.28530

Cited by 2 publications

(3 citation statements)

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“…Chlorpyrifos (O,O-diethyl O-3,5,6-trichloropyridin-2-yl phosphorothioate) is an organophosphate insecticide and acts on the nervous system of insects by inhibiting acetylcholinesterase. Cypermethrin The vegetables are low in fat, high in dietary bers; contain minerals and vitamins, possessing a very high nutritional density [Nahar et al 2016]. However, vegetables are usually susceptible to pest attack and different kinds of pesticides are being used in cultivation around the world including Bangladesh.…”

Section: Introductionmentioning

confidence: 99%

“…However, indiscriminate use of insecticides and without maintaining the proper pre-harvest interval can make the food unsafe, especially when tamotoes are used as salad [Nahar et al 2012]. Pesticide residues in the agricultural products depend on the dose of application, climatic condition of each country and also on seasons like winter and summer [Nahar et al 2014]. We earlier reported dissipation pattern of fenvalerate in tea, and cypermethrin and quinalphos in tomato, bean, cauli ower in experimental elds [Nahar et al 2012, 2014, 2016, Munia 2018].…”

Section: Introductionmentioning

confidence: 99%

“…Pesticide residues in the agricultural products depend on the dose of application, climatic condition of each country and also on seasons like winter and summer [Nahar et al 2014]. We earlier reported dissipation pattern of fenvalerate in tea, and cypermethrin and quinalphos in tomato, bean, cauli ower in experimental elds [Nahar et al 2012, 2014, 2016, Munia 2018]. Now we are reporting dissipation of ve locally used pesticides namely Vitaban 48 EC, Double 50 EC, Nitro 505 EC, Asataf 75 SP (acephate) and Reeva 2.5 EC in eight commonly consumed vegetable samples i.e., tomato, cabbage, cauli ower, bottle gourd, sweet gourd, sponge gourd, green chili and cucumber at ambient temperature for environment and consumer safety.…”

Section: Introductionmentioning

confidence: 99%

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Dissipation Pattern of Five Pesticides in Vegetable Samples

Shoeb

Munia

Nahar

2021

Preprint

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Pesticides are frequently used in agricultural fields in Bangladesh. Residual pesticides in vegetable samples above maximum residue limits (MRL) are illegal use of pesticides and absence of Good Agricultural Practice (GAP). The Government made Safe Food Law to ensure safe food for all citizens of the country. To assess the dissipation of pesticides in vegetable samples for consumer safety, five locally banded pesticides i.e., Vitaban (chlorpyrifos), Double (mixture of imidacloprid and cypermethrin), Nitro (mixture of chlorpyrifos and cypermethrin), Acephate and Reeva (lambda cyhalothrin) were applied to eight different vegetables at the dose which farmers apply in their field in a large vegetable cultivation area. Samples were harvested from the farmer’s fields at 2h (0 day) after application of pesticides and analyzed at 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12 days keeping them at ambient temperature. Samples were extracted following Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method and cleaned up using primary secondary amine (PSA), and finally analysed by Gas Chromatograph Electron Captured Detector (GC-ECD. Limit of detection (LOD) and limit of quantification (LOQ) of chlorpyrifos, cypermethrin, imidacloprid, acephate and lambda cyhalothrin were 0.019 and 0.057, 0.019 and 0.057, 0.009 and 0.027, 0.019 and 0.057, and 0.009 and 0.057 µg/mL, respectively. Recoveries of these pesticides in these vegetables samples were within acceptable range of 74–110%. Level below MRL value of cypermethrin was found to be 2–5 days while chlorpyrifos, imidacloprid, acephate and lambda cyhalothrin treated vegetables were varied 3–8 days and considered to consume after these days, respectively.

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Section: Introductionmentioning

confidence: 99%