Dissipation of oxaziclomefone residues from rice, soil, and paddy field water using carbon nanotube-based QuEChERS and HPLC-MS analysis

Shi, Xianluo; Bian, Chuanfei; Zhang, Wei; Dong, Zemin; Li, Yuqi; Li, Baotong

doi:10.1016/j.microc.2022.107286

Cited by 10 publications

(3 citation statements)

References 32 publications

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“…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). This indicated that the analysis method meets the requirements of the "Guidelines for Pesticide Residues Experiment (NY/788-2018)" [28]. The hydrolysis kinetics curves and hydrolysis rate curves for pydiflumetofen at different initial concentrations are shown in Figure 2, while the hydrolysis kinetics model parameters are shown in Table 2.…”

Section: Precision Results Lod and Loqmentioning

confidence: 79%

“…At different levels of addition, the average recovery rate of pydiflumetofen in the soil was 90.16% to 101.11%, with a relative standard deviation of 1.62-6.75%. 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].…”

Section: Precision Results Lod and Loqmentioning

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: 79%

Section: Precision Results Lod and Loqmentioning

confidence: 99%

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

et al. 2023

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“…In addition, GC-MS is relatively expensive, as it relies on sophisticated instruments and highly trained professionals. Liquid chromatography-(LC-) MS can separate thermally unstable and nonvolatile samples and thus can complement the limitations of GC [21]. LC-MS is also associated with highly accurate, sensitive, and reliable results.…”

Section: Traditional Methodsmentioning

confidence: 99%

Research Status in the Use of Surface-Enhanced Raman Scattering (SERS) to Detect Pesticide Residues in Foods and Plant-Derived Chinese Herbal Medicines

Chu,

Lin,

Nie

et al. 2024

International Journal of Analytical Chemistry

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Surface-enhanced Raman scattering (SERS) technology has unique advantages in the rapid detection of pesticides in plant-derived foods, leading to reduced detection limits and increased accuracy. Plant-derived Chinese herbal medicines have similar sources to plant-derived foods; however, due to the rough surfaces and complex compositions of herbal medicines, the detection of pesticide residues in this context continues to rely heavily on traditional methods, which are time consuming and laborious and are unable to meet market demands for portability. The application of flexible nanomaterials and SERS technology in this realm would allow rapid and accurate detection in a portable format. Therefore, in this review, we summarize the underlying principles and characteristics of SERS technology, with particular focus on applications of SERS for the analysis of pesticide residues in agricultural products. This paper summarizes recent research progress in the field from three main directions: sample pretreatment, SERS substrates, and data processing. The prospects and limitations of SERS technology are also discussed, in order to provide theoretical support for rapid detection of pesticide residues in Chinese herbal medicines.

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Analytical method for the determination of guvermectin residues in rice environment by the QuEChERS method combined with HPLC

Wang

Bian

Dong

et al. 2022

Journal of Food Composition and Analysis

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Dissipation of oxaziclomefone residues from rice, soil, and paddy field water using carbon nanotube-based QuEChERS and HPLC-MS analysis

Cited by 10 publications

References 32 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

Research Status in the Use of Surface-Enhanced Raman Scattering (SERS) to Detect Pesticide Residues in Foods and Plant-Derived Chinese Herbal Medicines

Analytical method for the determination of guvermectin residues in rice environment by the QuEChERS method combined with HPLC

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