Pydiflumetofen in paddy field environments: Its dissipation dynamics and dietary risk

Bian, Chuanfei; Luo, Junhua; Gao, Meizhu; Shi, Xugen; Li, Yuqi; Li, Baotong; Tang, Limei

doi:10.1016/j.microc.2021.106709

Cited by 13 publications

(5 citation statements)

References 36 publications

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“…When the recovery is between 70~120% and RSD < 15%, it indicates that the analytical residue method has a good accuracy and precision [28]. LOD is defined as the concentration of pydiflumetofen when the signal-to-noise ratio exceeds 3 (S/N = 3) in the matrix extraction, while LOQ is defined as the concentration of pydiflumetofen when the signal-to-noise ratio exceeds 3 (S/N = 10) in the matrix extraction [27,29]. The detection limit (LOD) and quantification limit (LOQ) were 0.0023-0.0033 mg/kg and 0.0082-0.0115 mg/kg, respectively (Table 1).…”

Section: Precision Results Lod and Loqmentioning

confidence: 99%

“…Furthermore, Sheng et al found that pydiflumetofen had a low residue in watermelons and a high adsorption capacity in the soil [25]. Bian et al established a pydiflumetofen analysis method exploring its environmental behavior in a rice paddy ecosystem [26,27]. This paper will not only investigate how pydiflumetofen is hydrolyzed in water but also its degradation behavior in four different agricultural soils.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of the Hydrolysis of Pydiflumetofen and Its Degradation Characteristics in Agricultural Soils

et al. 2023

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Pydiflumetofen is a potent fungicide that effectively inhibits pathogenic fungal growth by regulating succinate dehydrogenase activity. It effectively prevents and treats various fungal diseases, including leaf spot, powdery mildew, grey mold, bakanae, scab, and sheath blight. Pydiflumetofen’s hydrolytic and degradation properties were investigated indoors in four distinct soil types (phaeozems, lixisols, ferrosols, and plinthosols) to assess its risks in aquatic and soil environments. The effect of soil physicochemical properties and external environmental conditions on its degradation was also explored. Hydrolysis experiments found that pydiflumetofen’s hydrolysis rate decreased with increasing concentration, regardless of the initial concentration. Furthermore, an increasing temperature significantly enhances the hydrolysis rate, with neutral conditions having higher degradation rates than acidic and alkaline conditions. Pydiflumetofen showed a degradation half-life of 10.79–24.82 days and a degradation rate of 0.0276–0.0642 in different soils. Phaeozems soils had the fastest degradation, while ferrosols soils had the slowest. Sterilization significantly reduced its soil degradation rate and extended its half-life, which confirmed that microorganisms were the primary cause. Therefore, when using pydiflumetofen in agricultural production activities, the characteristics of water bodies, soil, and environmental factors must be considered, while minimizing the emissions and environmental impact.

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Section: Precision Results Lod and Loqmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of the Hydrolysis of Pydiflumetofen and Its Degradation Characteristics in Agricultural Soils

et al. 2023

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“…Previous studies [ 13 , 14 , 16 , 23 ] have shown that the half-lives of pydiflumetofen in rice plant, wheat grains, watermelon, and bananas are 1.1–9.3 d, 3.2–4.4 d, 2.1–3.4 d, and 16.9 d, respectively, and the half-lives in paddy soil and watermelon soil are 6.08–14.38 d and 21–69.3 d, respectively, which are quite different from our experimental results. This indicates that different crops metabolize the pesticide differently.…”

Section: Resultsmentioning

confidence: 99%

“…With the widespread use of pydiflumetofen in crops and its ability to enter the environment and human body through various routes, methods for analyzing residual amounts of pydiflumetofen have attracted much attention. Bian et al [ 13 ] used the quick, easy, cheap, effective, rugged, and safe (QuEChERS) approach combined with high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS) to determine the residual amount of pydiflumetofen in paddy field environments and assessed the dietary risk of pydiflumetofen in rice. Wu et al [ 14 ] used ultra-high performance liquid–chromatography–tandem mass spectrometry (UPLC–MS/MS) to detect the residual amount of pydiflumetofen in wheat ears during the flowering and harvesting stages, and Liu et al [ 15 ] established an analytical method for determining pydiflumetofen residues in seven plant-derived foods (tomatoes, cucumbers, apples, grapes, potatoes, watermelons, and bananas) by combining QuEChERS with UPLC–MS/MS.…”

Section: Introductionmentioning

confidence: 99%

Dissipation and Dietary Risk Assessment of Pydiflumetofen Residues in Soybean

Wei

Hou

et al. 2022

Molecules

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In this study, the quick, easy, cheap, effective, rugged, and safe (QuEChERS) method, combined with high-performance liquid chromatography–tandem mass spectrometry, was chosen for detecting pydiflumetofen residues in soybean plants, soybeans and soil, and assessing the risk of short- and long-term dietary intake. Pydiflumetofen concentrations ranging from 0.001–0.5 mg/L exhibited good linearity (r > 0.997). At varying doses, the average pydiflumetofen recovery rates and relative standard deviations among soybean plants, soybeans, and soil ranged from 83.9 ± 1.1% to 99.5 ± 3.3% and from 0.77 to 7.77%, respectively. The sensitivity, accuracy, and precision of the chosen methodology met the requirements of pesticide residue analysis. The results of the degradation dynamics test showed that the half-life of pydiflumetofen (t1/2) in soybean plants and in soil were 3.6 to 5.7 and from 7.9 to 25.7 d, respectively. Assessment of the concentration of pydiflumetofen residues in soybeans revealed acute and chronic dietary exposure risks of 0.06 and 7.54%, respectively. As these values are very low, pydiflumetofen residues in soybeans present an acceptable risk to public health. The results of this study will help to guide the practical application of pydiflumetofen and minimize the environmental risks associated with its use.

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Adsorption-desorption and transport behavior of pydiflumetofen in eight different types of soil

Bian

Wang

Cui

et al. 2022

Ecotoxicology and Environmental Safety

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Pydiflumetofen in paddy field environments: Its dissipation dynamics and dietary risk

Cited by 13 publications

References 36 publications

Assessment of the Hydrolysis of Pydiflumetofen and Its Degradation Characteristics in Agricultural Soils

Assessment of the Hydrolysis of Pydiflumetofen and Its Degradation Characteristics in Agricultural Soils

Dissipation and Dietary Risk Assessment of Pydiflumetofen Residues in Soybean

Adsorption-desorption and transport behavior of pydiflumetofen in eight different types of soil

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