Dissipation and Residue of Bifenthrin in Wheat under Field Conditions

You, Xiao‐Zeng; Jiang, Naiwen; Liu, Fengmao; Liu, Congyun; Wang, Suli

doi:10.1007/s00128-012-0903-5

Cited by 12 publications

(7 citation statements)

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“…Hence, photo-degradation of bifenthrin was prevented, which could have played a key role in faster dissipation of the residues in other crops. Furthermore, it has earlier been reported that the rainfall and wet weather favor faster dissipation of bifenthrin (Tewary et al 2005;You et al 2013). The mean of maximum temperature, minimum temperature, forenoon relative humidity, afternoon relative humidity, and open pan evaporation for 90 days from the date of imposing the treatments was 36.7°C, 24.3°C, 85.6%, 57.8%, and 5.1 mm/day, respectively.…”

Section: Dissipation Kinetics Of Bifenthrin In Sugarcane Setts Under a Tropical Field Conditionmentioning

confidence: 97%

“…The half-lives of bifenthrin in eggplant were worked out to be 3.3 and 4.1 days at two different locations in China, when the insecticide was applied at the rate of 480 g a.i./ha (Shi et al 2016). In wheat seedlings, the half-lives of bifenthrin were reported to vary between 2.4 and 10.5 days across three different locations in China (You et al 2013). Faster dissipation of bifenthrin in one of the three locations involved in the study was attributed to moderate rainfall within a day after spraying and more precipitation during the experimental period.…”

Section: Dissipation Kinetics Of Bifenthrin In Sugarcane Setts Under a Tropical Field Conditionmentioning

confidence: 99%

“…Therefore, a thorough knowledge on the dissipation kinetics of bifenthrin in the soil and cane setts provides an insight into its dynamic behavior in the soil-plant-environment continuum. Though the dissipation kinetics of bifenthrin has been studied in the soil of several crop ecosystems including cereals (You et al 2013), pulses (Mukherjee et al 2010), and vegetables (Chauhan et al 2012;Shi et al 2016) by the researchers worldwide, reports are lacking in the sugarcane ecosystem. Since no such report on this aspect in sugarcane is available in the public domain, this work was initiated with the prime objective of studying the dissipation kinetics of bifenthrin in the soil and the plant under the tropical field condition.…”

Section: Introductionmentioning

confidence: 99%

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Bifenthrin in the tropical sugarcane ecosystem: persistence and environmental risk assessment

Ramasubramanian

Paramasivam

2020

Environ Sci Pollut Res

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Termites are one of the major pests of sugarcane. Bifenthrin has label claim for use against sugarcane termites and is applied at the time of planting over the cane setts in the furrows. A thorough knowledge on the dissipation kinetics of bifenthrin in the soil and cane setts provides an insight into its dynamic behavior in the soil-plant-environment continuum, and hence, was studied in detail. The recoveries of the method adopted to determine the residues of bifenthrin in the soil, sugarcane setts, stem, and leaf were in the range of 92.78-98.19% at three levels of fortification ranged between 0.01 and 0.1 μg/g of matrix. At the recommended dose (100 g a.i./ha), bifenthrin was found to persist in the soil and cane setts up to 60 and 75 days after treatment (DAT) with the half-lives of 16.4 and 25.0 days, respectively. The dissipation kinetics of bifenthrin followed the biphasic model. At double the recommended dose, the residues persisted up to 75 DAT and reached below the detectable limit (< 0.01 μg/g) on 90 DAT both in the soil and setts. The half-life of bifenthrin was 22.0 days in the sandy clay loam soil and 17.6 days in/on the sugarcane setts. In the present study, dissipation by photolysis has been ruled out, as the treated setts were not exposed to sunlight. This could be one of the reasons for longer persistence of bifenthrin in the sugarcane setts up to 75 DAT with the half-life of more than 2 weeks. The bifenthrin residues were not detected in the leaf and stem of sugarcane plant throughout the experimental period. There could be harmful effects to earthworms (risk quotient > 1.0) due to the presence of bifenthrin residues in the soil of tropical sugarcane ecosystem.

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Section: Dissipation Kinetics Of Bifenthrin In Sugarcane Setts Under a Tropical Field Conditionmentioning

confidence: 97%

Section: Dissipation Kinetics Of Bifenthrin In Sugarcane Setts Under a Tropical Field Conditionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bifenthrin in the tropical sugarcane ecosystem: persistence and environmental risk assessment

Ramasubramanian

Paramasivam

2020

Environ Sci Pollut Res

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“…[15][16][17][18][19][20] A ESL/PBT foi aplicada para avaliar a dissipação do fungicida sistêmico difenoconazol em morangos durante seis aplicações sucessivas do produto comercial. As concentrações residuais de difenoconazol determinadas, em triplicata, durante os seis tratamentos nos diferentes dias são apresentadas na Figura 5.…”

Section: Avaliação Da Dissipação De Difenoconazol Em Morango Após Múlunclassified

Otimização, validação e aplicação de método para determinação da concentração residual de difenoconazol em morangos após múltiplas aplicações

Heleno¹,

Queiroz²,

Neves³

et al. 2014

Quím. Nova

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fruit cultivated in pots were estimated using the solid-liquid extraction with low temperature partition (SLE/LTP) method for sample preparation and gas chromatography with electron capture detection (GC/ECD) for analysis. The optimized method presented excellent recovery values from fortified samples and reproducibility (average recovery values ≥ 98%; CV values ≤ 15%). Linearity of response was demonstrated (r = 0.995) with a detection limit of 9 µg kg -1 . The method was successfully applied for the determination of difenoconazole residues in strawberries. Based on these results, the fungicide dissipates quickly, but the residual concentration increases after multiple applications.Keywords: pesticide analysis; strawberry; gas chromatography. INTRODUÇÃOO difenoconazol (cis-trans-3-cloro-4-[4-metil-2-(1H-1,2,4-triazol-1-ilmetil)-1,3-dioxolan-2-il]fenil 4-clorofenil eter) (Figura 1) é um fungicida sistêmico empregado no controle da mancha-de--mycosphaerella ou mancha-foliar causada pelo fungo Mycospharella fragariae.1 Esse princípio ativo é indicado para aplicação foliar em diferentes culturas, como maçã, uva, pimentão, tomate e morango. O uso indiscriminado de agrotóxicos e a não observância dos períodos de carência faz com que estes sejam detectados em concentrações acima do limite máximo de resíduo (LMR) em diversos alimentos.2 Nos alimentos consumidos in natura, como o morango, esse problema torna-se um pouco mais sério, uma vez que a população é exposta diretamente ao agrotóxico. O LMR de difenoconazol estabelecido pela Agência Nacional de Vigilância Sanitária (ANVISA) para essa cultura é de 500 µg de princípio ativo por kg de morango. 3O morango, cada vez mais, vem se destacando por estar presente nos relatórios do Programa de Análises de Resíduos de Agrotóxicos em Alimentos (PARA) como um dos alimentos mais contaminados por resíduos de agrotóxicos no Brasil, por vários anos consecutivos. 4A extração do difenoconazol em matrizes vegetais geralmente é feita com solventes orgânicos seguida de uma etapa de clean-up em cartuchos de extração em fase sólida.5-7 Outra técnica que vem sendo empregada para determinação de resíduos de agrotóxicos em alimentos é a extração sólido-líquido com partição em baixa temperatura (ESL/PBT), que possui a vantagem de realizar simultaneamente as etapas de extração do analito e clean-up do extrato, além de baixo consumo de amostra e reagentes. [8][9][10] O objetivo deste trabalho foi otimizar e validar o método de extração sólido-líquido com partição em baixa temperatura e análise por cromatografia gasosa com detector por captura de elétrons (ESL/ PBT-CG/DCE) para monitorar a concentração residual de difenoconazol em morangos que receberam múltiplas aplicações foliares desse princípio ativo. PARTE EXPERIMENTAL Reagentes e soluçõesOs reagentes utilizados foram acetato de etila (99,5% v/v) e acetonitrila (99,5% v/v) adquiridos da Vetec (Duque de Caxias, Brasil), e cloreto de sódio (99,0% m/m) e ácido acético (99,7% v/v) adquiridos da Isofar (Duque de Caxias, Brasil).Solução padrão e...

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“…BIF [2‐methylbiphenyl‐3‐ylmethyl( Z )‐(1 RS )‐ cis ‐3‐(2‐chloro‐3,3,3‐trifluoroprop‐1‐enyl)‐2,2‐dimethyl cyclopropanecarboxylate] is a synthetic pyrethroid insecticide with a comprehensive acaricidal and insecticidal activity (Tewary et al, 2005). It is used worldwide in agriculture to kill pests on contact upon its ingestion, affecting the nervous system (Mukherjee et al, 2010; You et al, 2013). BIF has been classified as Toxicity Class II, moderately toxic, by the US Environmental Protection Agency (WHO, 2009).…”

Section: Introductionmentioning

confidence: 99%

Residual levels and dietary risk assessment of bifenthrin and dinotefuran and its major metabolites in open wheat field conditions

2021

Biomedical Chromatography

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To evaluate the residual levels of bifenthrin and dinotefuran, a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) and high‐performance liquid chromatography–tandem mass spectrometry method for simultaneous detection of bifenthrin and dinotefuran and its major metabolites in wheat was developed and validated. Dietary risk assessments were further performed based on the relevant residual data from 12 wheat fields, toxicology data and dietary patterns. In wheat grain and straw, the recoveries of all analytes ranged from 77 to 102% with the relative standard deviation <9.7% and the limit of quantitation 0.05 mg kg−1. The highest terminal residue of bifenthrin in wheat grain was 0.069 mg kg−1 and dinotefuran was 0.34 mg kg−1. Residual concentrations of bifenthrin and dinotefuran decreased to <0.05 and 0.15 mg kg−1 at 21 days (pre‐harvest interval), respectively. The chronic risk quotient ranged from 6.4 to 62.7% and the acute risk quotient varied from 0.38 to 17.73%. The chronic and acute dietary risks caused by the terminal residues of the two insecticides were negligible for Chinese populations. The recommended pre‐harvest interval was proposed to ensure safe wheat consumption. These data could provide a scientific reference to establish the Chinese maximum residue limit of dinotefuran in wheat.

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Dissipation and Residue of Bifenthrin in Wheat under Field Conditions

Cited by 12 publications

References 11 publications

Bifenthrin in the tropical sugarcane ecosystem: persistence and environmental risk assessment

Bifenthrin in the tropical sugarcane ecosystem: persistence and environmental risk assessment

Otimização, validação e aplicação de método para determinação da concentração residual de difenoconazol em morangos após múltiplas aplicações

Residual levels and dietary risk assessment of bifenthrin and dinotefuran and its major metabolites in open wheat field conditions

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