Dissipation, occurrence, and risk assessment of 12 pesticides in Dendrobium officinale Kimura et Migo

Fu, Yan; Wang, Quansheng; Zhang, Liang; Ling, Shuping; Jia, Huiyan; Wu, Yuan-li

doi:10.1016/j.ecoenv.2021.112487

Cited by 22 publications

(13 citation statements)

References 17 publications

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“…after 30 and 40 days of fungicide application, respectively. The results were also in agreement with Fu et al's study (Fu et al, 2021), which showed that the final residues of dimethomorph were 0.44-1. 3.5 | Residue evolution after washing, soaking, and brewing test…”

Section: Dimethomorphsupporting

confidence: 92%

“…For dry stems, the terminal residue levels were 0.13-0.80 mg kg À1 at 30 days and 0.12-0.85 mg kg À1 at 40 days after the last application. Fu et al's study reported similar results with our study, in which the highest residue (HR) of metalaxyl at PHI in D. officinale was 0.343 mg kg À1 (Fu et al, 2021). No MRL has been set for metalaxyl in D. officinale.…”

Section: Metalaxylsupporting

confidence: 89%

“…For fresh stems, the average intake and highest intake of fresh D. officinale were 0.045 kg per day (F i ) and 0.060 kg per day (LP) according to a previous study (Fu et al, 2021).…”

Section: Risk Assessmentmentioning

confidence: 73%

“…D. officinale has a huge market demand and economic value. According to the data reported by Chinese Customs, the export volume and value of D. officinale reached 13 tons and 12.08 million in the first half of 2020, respectively (Fu et al, 2021). However, D. officinale is often harmed by epidemic diseases, causing symptoms such as root rot, stem base rot, and top dryness (Lu et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Residue levels, household processing evolution, and risk assessment of chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph in Dendrobium officinale Kimura et Migo

Zhao

Hou

2022

Biomedical Chromatography

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Dendrobium officinale, a minor crop with medicinal and edible value, is increasingly consumed by people, but the pesticide residues on it have received little attention. In this work, field trials were conducted under good agricultural practice conditions to investigate the residues of chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph in D. officinale; then the evolution of these pesticides after household processing was studied. The results indicated that chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph were 2.41–30.12, 0.20–1.23, 0.07–0.80, and 0.19–7.90 mg kg−1, respectively, in stems at recommended preharvest interval (30 days). Washing and soaking removed the pesticides in fresh stems with processing factors 0.41–1.14 and 0.12–1.13, respectively. In the brewing test, the transfer rates of pesticides in dry stems decreased from the first time (4.27–95.40%) to the third time (3.89–15.57%). Intake risk assessments were also conducted, and the risk quotients were no more than 27.02% for all compounds in different samples, which indicated acceptable risks for consumers. As effective risk‐reducing home‐processing methods, washing, soaking, and multiple brewing were suggested in this work, hoping to help consumers with diet safety.

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Section: Dimethomorphsupporting

confidence: 92%

Section: Metalaxylsupporting

confidence: 89%

“…For fresh stems, the average intake and highest intake of fresh D. officinale were 0.045 kg per day (F i ) and 0.060 kg per day (LP) according to a previous study (Fu et al, 2021).…”

Section: Risk Assessmentmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

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Residue levels, household processing evolution, and risk assessment of chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph in Dendrobium officinale Kimura et Migo

Zhao

Hou

2022

Biomedical Chromatography

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“…Accuracy and precision are expressed as recovery (recovery of 70–120%), and relative standard deviation (RSD ≤ 20%) is according to NY/T 788-2018 ( 21 ). The average recoveries of imidacloprid were 78.34–91.17%, with RSD between 0.48 and 6.43% using QuEChERS; the finding that met the NY/T788-2018 requirements.…”

Section: Resultsmentioning

confidence: 99%

Residue, Dissipation Pattern, and Dietary Risk Assessment of Imidacloprid in Chinese Chives

et al. 2022

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The demand for Chinese chives is growing as they are also rich in vitamins, fiber, and sulfur nutrients. Chinese chives should be sprayed with imidacloprid to control pests and diseases to safeguard their yield and to meet the demands of East Asian consumers for Chinese chives. Overspraying of imidacloprid can lead to residues in Chinese chives, posing a severe risk to human health. To reduce the harmful effects of imidacloprid residues on humans, we investigated the imidacloprid dissipation pattern and the final residue on Chinese chives using the quick, easy, cheap, effective, rugged, and safe (QuEChERS) method combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Good linearity (R2= 0.9988), accuracy (expressed as recovery % of 78.34–91.17%), precision [expressed as relative SDs (RSDs) of 0.48–6.43%], and sensitivity [a limit of quantification (LOQ) ≤ 8.07 × 104 mg/kg] were achieved. The dissipation dynamics were consistent with the first-order kinetics, with a half-life of 2.92 days. The final residual levels on Chinese chives were 0.00923–0.166 mg/kg, which is lower than the maximum residue limits (MRLs) of 1 mg/kg for imidacloprid on Chinese chives. A risk assessment index of <1 indicates that Chinese chives are safe for consumption.

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Dissipation and dietary exposure risk assessment of spinosad, thiocyclam, and its metabolite nereistoxin in cucumber and groundwater for different population groups

Lin

Wen

et al. 2023

Biomedical Chromatography

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A QuEChERS (quick, easy, cheap, effective, rugged, and safe) technique using ultrahigh‐performance liquid chromatography with tandem mass spectrometry for the analysis of spinosad (spinosyn A + spinosyn D), thiocyclam, and nereistoxin in cucumber was developed with mean recoveries of 93−104%, relative standard deviations of ≤9%, and limits of quantification of 0.01 mg/kg. Field trials of spinosad and thiocyclam were performed in 12 representative cultivating areas in China. Field trial results indicate that spinosyn A and spinosyn D easily dissipated in cucumber with half‐lives of 2.48–6.24 and <3 days, respectively. Nereistoxin was produced after thiocyclam application and was more persistent than its parent. The terminal residues of spinosad were all below the maximum residue limits (0.2 mg/kg) in China, whereas the terminal concentration of nereistoxin (calculated as the stoichiometric equivalent of thiocyclam), which was much higher than that of thiocyclam, was far beyond the maximum residue limits of thiocyclam in cucumber (0.01 mg/kg) established by the European Union. The predicted no‐effect concentrations of spinosyn A, spinosyn D, thiocyclam, and nereistoxin leaching into groundwater were estimated using China‐PEARL (Pesticide Emission Assessment at Regional and Local scales) models after application. However, the dietary (food and water) exposure risk quotient for different populations was below 1 with a preharvest interval set at 5 days after the last application, indicating that the application of spinosad and thiocyclam in cucumber was unlikely to pose unacceptable risk for human health. This study provides data for the safe use of spinosad and thiocyclam in cucumber ecosystem.

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Dissipation, occurrence, and risk assessment of 12 pesticides in Dendrobium officinale Kimura et Migo

Cited by 22 publications

References 17 publications

Residue levels, household processing evolution, and risk assessment of chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph in Dendrobium officinale Kimura et Migo

Residue levels, household processing evolution, and risk assessment of chlorothalonil, SDS‐3701, metalaxyl, and dimethomorph in Dendrobium officinale Kimura et Migo

Residue, Dissipation Pattern, and Dietary Risk Assessment of Imidacloprid in Chinese Chives

Dissipation and dietary exposure risk assessment of spinosad, thiocyclam, and its metabolite nereistoxin in cucumber and groundwater for different population groups

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