Dissipation behaviour, residue distribution and dietary risk assessment of tetraconazole and kresoxim-methyl in greenhouse strawberry via RRLC-QqQ-MS/MS technique

Chen, Xiaoxin; Fan, Xueqi; Ma, Yecheng; Hu, Jiye

doi:10.1016/j.ecoenv.2017.11.019

Cited by 40 publications

(27 citation statements)

References 13 publications

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“…The terminal residues of propiconazole gradually increased with increasing application doses and reduced as the sampling interval extended in the crops. However, there are differences in terminal residue levels across different locations, which may be related to crop varieties, the weather, application time, and other factors 28–30 . The STMRs of propiconazole were 1.60 mg kg −1 and 0.002 mg kg −1 , and the HRs were 10.32 mg kg −1 and 0.037mg kg −1 in celery and onion respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Table 4 shows the registered crops for propiconazole use in China and the corresponding MRLs registered by various countries. In addition, the highest value of MRL was considered preferentially in calculating the corresponding NEDI values for each food group and the selection of reference MRL adhered to the followed priority order: China, Central Asian Commonwealth, USA, Australia, Korea, the EU, and Japan 28 …”

Section: Resultsmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

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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“…Residues from these three fungicides on agricultural products may pose risks for human health and environmental safety. Scientific use of pesticides and accurate assessment of pesticide residues can reduce unnecessary exposure, which in turn could benefit both humans and the environment …”

Section: Introductionmentioning

confidence: 99%

Dissipation behavior, residue distribution and risk assessment of three fungicides in pears

Fang

et al. 2020

J Sci Food Agric

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BACKGROUND: Fungicides are often applied to pears before they are kept in storage facilities. The scientific application of pesticides can reduce unnecessary exposure, which in turn could benefit both humans and the environment. RESULTS: We investigated dissipation behavior and residue distribution, and conducted risk assessments for prochloraz, pyraclostrobin, and tebuconazole in pears stored under different conditions using ultra-performance liquid chromatography (UPLC). The recoveries of the three fungicides ranged from 76.5% to 114.5%, and the coefficients of variation were 1.0%-8.5%. The half-life (t 1/2 ) ranges for degradation of the three fungicides in Dangshan Su pear peel were 8.8-13.9 days after storage at 25°C and 99.0-346.6 days after storage at 2°C. Among the three fungicides, tebuconazole had the lowest residue concentration in pear pulp (maximum of 0.226 mg·kg −1 ) and the longest half-life (≥ 231.0 days). Accordingly, among these fungicides, tebuconazole is the most suitable for the preservation of Dangshan Su pears during storage. Finally, we analyzed samples of six pear varieties from markets in China and found that the residue concentrations of the three fungicides in pear pulp and fruit met Chinese standards.CONCLUSION: The results provide a scientific basis for rationalizing the use of prochloraz, pyraclostrobin, and tebuconazole, and improving the safety of pears for eating.

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“…The higher the value, the greater the risk. While when the value is higher than 100%, it indicates an unacceptably high risk to consumers 30,45 .…”

Section: Methodsmentioning

confidence: 99%

Determination and dietary risk assessment of 284 pesticide residues in local fruit cultivars in Shanghai, China

Zhang

Chen

et al. 2021

Preprint

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The presence of pesticide residues has become one of the main risk factors affecting the safety and quality of agro-food. In this study, a multi-residue method for the analysis of 284 pesticides in five local fruit cultivars in Shanghai was developed based on ultrahigh-performance liquid chromatography-quadrupole time-of-fight mass spectrometry (UPLC-QTOF/MS). The limits of determination and the limits of quantitation of pesticides were 0.6–10 and 2–30 µg/kg, respectively. A total of 44, 10, 10, 18, and 7 pesticides were detected in strawberries, watermelons, melons, peaches, and grapes, respectively. The pesticide levels in 95.0% of the samples were below the maximum residual limits (MRLs) prescribed by China, and in 66.2% of the samples below the EU MRLs. The dietary risk assessment study showed big differences in the chronic and acute exposure risk values among different Chinese consumer groups. Through fruit consumption, children/females showed higher exposure risks than adults/males. But both the risk values were less than 100%, indicating that potential dietary risk induced by the pesticides was not significant for Chinese consumers. Nevertheless, certain measures are needed for both growers and government in order to decrease the MRL-exceeding rate of pesticide residues and ensure the quality and safety of fruits for consumers.

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Dissipation behaviour, residue distribution and dietary risk assessment of tetraconazole and kresoxim-methyl in greenhouse strawberry via RRLC-QqQ-MS/MS technique

Cited by 40 publications

References 13 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

Dissipation behavior, residue distribution and risk assessment of three fungicides in pears

Determination and dietary risk assessment of 284 pesticide residues in local fruit cultivars in Shanghai, China

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