Residues and Dietary Risk Assessment of Prohexadione-Ca and Uniconazole in Oryza sativa L. and Citrus reticulata Blanco by Liquid Chromatography-Tandem Mass Spectrometry

文献类型： 外文期刊

第一作者： Ye, Hui

作者： Ye, Hui;Luo, Yuqin;Li, Yanjie;Wang, Xiangyun;He, Hongmei;Jiang, Jinhua;Yu, Jianzhong;Zhang, Changpeng;Ye, Hui;Luo, Yuqin;Li, Yanjie;Wang, Xiangyun;He, Hongmei;Jiang, Jinhua;Yu, Jianzhong;Zhang, Changpeng

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关键词： Oryza sativa L.; citrus fruit; dietary intake risk assessment; plant growth regulators

期刊名称：MOLECULES （ 影响因子：4.6； 五年影响因子：4.9 ）

ISSN：

年卷期： 2023 年 28 卷 6 期

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收录情况： SCI

摘要： A simple and sensitive method for the simultaneous quantitation of prohexadione-Ca and uniconazole in the field experiment of Oryza sativa L. and Citrus reticulata Blanco was established using solid-phase extraction (SPE) with polymer anion exchange (PAX) and Florisil followed by LC-MS/MS. The method demonstrated excellent linearity (R-2 > 0.999 0), trueness (recoveries between 95 similar to 105%), precision (CVs between 0.8 similar to 12%), sensitivity, and repeatability (LOQ of 0.05 and 0.01 mg/kg, respectively). Residue tests were conducted in the field at 12 representative sites in China, revealing final concentrations of prohexadione-Ca and uniconazole in brown rice, rice hull, and rice straw to be below 0.05 mg/kg, while in whole citrus fruit and citrus pulp, they were below 0.01 mg/kg. These were below the maximum residue limits specified in China. The chronic dietary risks of prohexadione-Ca and uniconazole in rice crops and citrus fruits were calculated to be 0.48% and 0.91%, respectively. Our research suggests that the chronic risk associated with the daily consumption of rice crops and citrus fruit at the recommended dosage is acceptable.

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