Residue transfer and risk assessment of carbendazim in tea

Zhou, Li; Jiang, Yunliang; Qin, Lin; Wang, Xuan; Zhang, Xinzhong; Xu, Jie; Chen, Zongmao

doi:10.1002/jsfa.9072

Cited by 47 publications

(22 citation statements)

References 24 publications

(38 reference statements)

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“…For the safe application of propiconazole, dietary exposure calculation and risk assessment were studied based on the risk quotient (RQ) method. RQ < 100% indicates that the human exposure concentration by consumption of pesticide‐containing food is lower than the predicted effect concentration, representing an acceptable risk to humans, whereas RQ > 100% indicates unacceptable adverse health effects on humans 19–21 …”

Section: Methodsmentioning

confidence: 99%

Study on degradation behaviour, residue distribution, and dietary risk assessment of propiconazole in celery and onion under field application

Bai

Chen

et al. 2020

J Sci Food Agric

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BACKGROUND Propiconazole is widely used to control fungal diseases in field crops, including celery and onion. The potential risk to the environment and human health has aroused much public concern. Therefore, it is significant to investigate the degradation behaviour, residue distribution, and dietary risk assessment of propiconazole in celery and onion. RESULTS A sensitive analytical method for determination of propiconazole residue in celery and onion was established and validated through high‐performance liquid chromatography tandem mass spectrometry. The average recovery rate of propiconazole ranged from 85.7% to 101.8%, with a relative standard deviation of 2.1–6.3%. For the dissipation kinetics, the data showed that propiconazole in celery and onion was degraded, with half‐lives of 6.1–6.2 days and 8.7–8.8 days respectively. In the terminal residue experiments, the residues of propiconazole were below 4.66 mg kg−1 in celery after application two or three times and were below 0.029 mg kg−1 in onion after application of three or four times with an interval of 14 days under the designed dosages. The chronic and acute dietary exposure assessments for propiconazole were valued by risk quotient, with all values being lower than 100%. CONCLUSION Propiconazole in celery and onion was rapidly degraded following first‐order kinetics models. The dietary risk of propiconazole through celery or onion was negligible to consumers. The study not only offers a valuable reference for reasonable usage of propiconazole on celery and onion, but also facilitates the establishment of maximum residue limits in China. © 2020 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Study on degradation behaviour, residue distribution, and dietary risk assessment of propiconazole in celery and onion under field application

Bai

Chen

et al. 2020

J Sci Food Agric

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“…The dissipation behavior and residue of methoxyfenozide have been further revealed through open field trials. Furthermore, a risk assessment was carried out based on the risk quotient (RQ) method, 24,25 also known as the hazard quotient (HR) method. 26 This study not only contributes to establishing a reasonable Chinese MRL for methoxyfenozide but also provides practical data on its safe use.…”

Section: Introductionmentioning

confidence: 99%

Residue dissipation and dietary exposure risk assessment of methoxyfenozide in cauliflower and tea via modified QuEChERS using UPLC/MS/MS

et al. 2020

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BACKGROUND Methoxyfenozide possesses efficacy against a variety of lepidopteron pests, including the major pests in cauliflower and tea, so it is of great importance to generalize the practical use of methoxyfenozide in the field. RESULTS An efficient method was developed and validated in both vegetable matrix and extract‐rich matrix (cauliflower and tea) using modified QuEChERS combined with UPLC/MS/MS analysis. The recoveries in cauliflower, made tea and tea shoots ranged from 94.5 to 108.0%, from 85.0 to 91.6% and from 77.3 to 82.0% respectively, with relative standard deviations (RSDs) below 17.3% in all cases. The field results showed that methoxyfenozide dissipated in cauliflower with half‐life (t1/2) at 2.5–3.5 days and in tea with t1/2 at 1.2 days. Combining the above experimental data and statistical food intake values, the risk quotient (RQ) values were significantly lower than 1. CONCLUSION The quantification method of methoxyfenozide in cauliflower or tea has not been established until this study. The dissipation and dietary exposure risk assessment of methoxyfenozide in cauliflower and tea were investigated in the field. Methoxyfenozide dissipated rapidly in cauliflower despite different climates, and it dissipated faster in tea. The dietary risk of methoxyfenozide through cauliflower or tea was negligible to humans. This study not only provides guidance for the safe use of methoxyfenozide but also serves as a reference for the establishment of maximum residue limits (MRLs) in China. © 2019 Society of Chemical Industry

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“…Generally, the contributions of growth dilution are more significant for those pesticides with longer T 1/2 . To evaluate the dissipation rate of pesticides, the T 1/2 values of pesticides on fresh tea leaves under field conditions were divided into five grades: T 1/2 scale 1 < 1.0 days T 1/2 scale 2 1.0–2.0 days T 1/2 scale 3 2.1–3.0 days T 1/2 scale 4 3.1–5.0 days T 1/2 scale 5 > 5.0 days …”

Section: Methodsmentioning

confidence: 99%

Index design and safety evaluation of pesticides application based on a fuzzy AHP model for beverage crops: tea as a case study

Chen

Zhou

Yang

et al. 2019

Pest Management Science

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AbstractsBACKGROUND: A fuzzy analytic hierarchy process (AHP) is shown to be an effective methodology for multiple criteria decision-making from various heterogeneous data. Despite application of AHP to some decision-making problems in agriculture, research on AHP utilization for screening the safe use of pesticides for tea plantations based upon multiple criteria has not been reported. The overall safety chain from tea plantation to tea manufacture to tea cup after pesticides had been sprayed on a tea plantation was considered and the AHP network was constructed at two levels with two categories, tea-related parameters and pesticide toxicity. Seven criteria were selected as safety indexes, half-lives of pesticides on the tea plant (T 1/2 ), water solubility (Ws), vapor pressure (Vp), acceptable daily intake (ADI), acute oral lethal dose of pesticides to rat (LD 50 ), and ecotoxicity of pesticides including LD 50 to bees and LD 50 to aquatic organisms. RESULTS: According to the AHP, water solubility was the most important factor in the evaluation pesticide safety for use on a tea plantation, followed by the half-lives of the pesticides on the tea plant and the acceptable daily intake. Combined with the scale of seven criteria and relative weight (W), 48 pesticides with an overall score (S) < 25 could be regarded as relatively safe compounds when applied in tea plantations. CONCLUSION: An AHP approach was suggested to evaluate the safe use of pesticides on tea plantations. This study provides a new idea for the evaluation of safety in beverage crops.

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Residue transfer and risk assessment of carbendazim in tea

Cited by 47 publications

References 24 publications

Study on degradation behaviour, residue distribution, and dietary risk assessment of propiconazole in celery and onion under field application

Study on degradation behaviour, residue distribution, and dietary risk assessment of propiconazole in celery and onion under field application

Residue dissipation and dietary exposure risk assessment of methoxyfenozide in cauliflower and tea via modified QuEChERS using UPLC/MS/MS

Index design and safety evaluation of pesticides application based on a fuzzy AHP model for beverage crops: tea as a case study

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