Determination of spinetoram residues in rice field environment by HPLC combined with QuEChERS method, residue elimination and final residues

Zhang, Xiaoxue; Chang, Hailong; Lin, Wei; Hua, Jincheng; Li, Yuqi; Li, Baotong

doi:10.1016/j.jfca.2024.106529

Journal of Food Composition and Analysis

2024

DOI: 10.1016/j.jfca.2024.106529

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Determination of spinetoram residues in rice field environment by HPLC combined with QuEChERS method, residue elimination and final residues

Xiaoxue Zhang,

Hailong Chang,

Wei Lin

et al.

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2024

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Concurrent Analysis of Tiafenacil and Its Transformation Products in Soil by Using Newly Developed UHPLC-QTOF-MS/MS-Based Approaches

Zhou,

Yan,

Zhang

et al. 2024

IJMS

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As new pesticides continue to emerge in agricultural systems, understanding their environmental behavior is crucial for effective risk assessment. Tiafenacil (TFA), a promising novel pyrimidinedione herbicide, was the focus of this study. We developed an efficient QuEChERS-UHPLC-QTOF-MS/MS method to measure TFA and its transformation products (TP1, TP2, TP3, TP4, and TP5) in soil. Our calibration curves exhibited strong linearity (R2 ≥ 0.9949) ranging from 0.015 to 2.0 mg/kg within a low limit of quantification (LOQ) of 2.0 µg/kg. Inter-day and intra-day recoveries (0.10 to 2.0 mg/kg, 80.59% to 110.05%, RSD from 0.28% to 12.93%) demonstrated high sensitivity and accuracy. Additionally, TFA dissipation under aerobic conditions followed first-order kinetics, mainly yielding TP1 and TP4. In contrast, TP1 and TP2 were mainly found under sterilized and anaerobic conditions, and TFA dissipation followed second-order kinetics. Moreover, we predicted the transformation pathways of TFA using density functional theory (DFT) and assessed the toxicity levels of TFA and its TPs to aquatic organisms using ECOSAR. Collectively, these findings hold significant implications for a better understanding of TFA fate in diversified soil, benefiting its risk assessment and rational utilization.

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Concurrent Analysis of Tiafenacil and Its Transformation Products in Soil by Using Newly Developed UHPLC-QTOF-MS/MS-Based Approaches

Zhou,

Yan,

Zhang

et al. 2024

IJMS

View full text Add to dashboard Cite

show abstract

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Determination of spinetoram residues in rice field environment by HPLC combined with QuEChERS method, residue elimination and final residues

Cited by 1 publication

References 34 publications

Concurrent Analysis of Tiafenacil and Its Transformation Products in Soil by Using Newly Developed UHPLC-QTOF-MS/MS-Based Approaches

Concurrent Analysis of Tiafenacil and Its Transformation Products in Soil by Using Newly Developed UHPLC-QTOF-MS/MS-Based Approaches

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