Residues and risk assessment of bifenthrin and chlorfenapyr in eggplant and soil under open ecosystem conditions

Shi, Kaiyuan; Li, Li; Yuan, Longfei; Wei, Li; Liu, Fengmao

doi:10.1080/03067319.2015.1137908

Cited by 14 publications

(18 citation statements)

References 28 publications

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“…The half-lives of bifenthrin in the sandy loam soil of chickpea and pigeonpea fields of the same location were 2.50 and 3.73 days when applied as foliar spray at the rate of 25 g a.i./ha (Mukherjee et al 2010). The half-lives of bifenthrin were 17.8 and 25.7 days in the sandy loam soil of brinjal fields at two different locations of China (Shi et al 2016). The half-lives of bifenthrin in the soil of tomato ecosystem were 2.02 and 2.10 days when applied at the rate of 25 and 50 g a.i./ha, respectively (Chauhan et al 2012).…”

Section: Methods Validationmentioning

confidence: 93%

“…Chauhan et al (2012) tomato fruits and reported that the insecticide had the halflives of 1.83 and 2.05 days at room temperature and 2.02 and 2.32 days under a refrigerated condition (4°C) at 25 and 50 g a.i./ha, respectively. 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).…”

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: Methods Validationmentioning

confidence: 93%

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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“…The chronic/long-term risk assessment calculations (Shi, Li, Yuan, Li, & Liu, 2016;You et al, 2016) based on the estimated daily intake (EDI) and the acceptable daily intake (ADI) were determined using the following equations:…”

Section: Discussionmentioning

confidence: 99%

“…The chronic/long‐term risk assessment calculations (Shi, Li, Yuan, Li, & Liu, ; You et al, ) based on the estimated daily intake (EDI) and the acceptable daily intake (ADI) were determined using the following equations:

EDI = \frac{F_{i} \times \sum {STMR}_{i}}{normalb . normalw .}

where EDI is the estimated daily intake (mg/kg, b.w. ), F i is the food consumption data (g/day), STMR i is mean residue level (mg/kg) and b.w.…”

Section: Methodsmentioning

confidence: 99%

Dissipation, residues and risk assessment of spirotetramat and its four metabolites in citrus and soil under field conditions by LC‐MS/MS

Zhang

Chen

Wang

et al. 2017

Biomedical Chromatography

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A modified Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) method for the simultaneous determination of spirotetramat and its four metabolite residues in citrus, peel, pulp and soil was developed and validated by liquid chromatography with tandem mass spectrometry (LC-MS/MS). The samples were extracted with acetonitrile (1%, glacial acetic acid, v/v) and purified using primary secondary amine and octadecylsilane. The limit of detection was 0.01-0.13 mg/kg, whereas that of quantification was 0.02-0.40 mg/kg for spirotetramat and its metabolites. The average recoveries of spirotetramat, spirotetramat-enol, spirotetramat-mono-hydroxy, spirotetramat-enol-glucoside and spirotetramat-ketohydroxy in all matrices were 73.33-107.91%, 75.93-114.85%, 76.44-100.78%, 71.46-103.19% and 73.08-105.27%, respectively, with relative standard deviations < 12.32%. The dissipation dynamics of spirotetramat in citrus and soil followed first-order kinetics, with half-lives of 2.3-8.5 days in the three sampling locations. The terminal residues of spirotetramat in four matrices at the three locations were measured below the 1.0 mg/kg maximum residue limit set by China, and residues were found to be concentrated on the peel. The risk assessment of citrus was evaluated using risk quotients. The risk quotient values were found to be significantly <1, suggesting that the risk to human health was negligible when using the recommended doses of spirotetramat in citrus. These results could provide guidance for the safe and proper application of spirotetramat in citrus in China.

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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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Residues and risk assessment of bifenthrin and chlorfenapyr in eggplant and soil under open ecosystem conditions

Cited by 14 publications

References 28 publications

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

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

Dissipation, residues and risk assessment of spirotetramat and its four metabolites in citrus and soil under field conditions by LC‐MS/MS

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

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