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超高效液相色谱—串联质谱法同时测定水稻中丙草胺和西草净残留
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Simultaneous determination of residue of pretilachlor and simetryn in paddy by UPLC-MS/MS
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    摘要:

    建立了超高效液相色谱—串联质谱仪测定稻田环境中的丙草胺和西草净的残留分析检测方法。糙米、稻壳、植株、土壤以及田水样品中的丙草胺和西草净以乙腈为提取剂,N-丙基乙二胺 (PSA)净化,采用超高效液相色谱—串联质谱测定。丙草胺在0.01~5.0mg/L范围内线性良好,相关系数为0.9974,丙草胺在糙米、稻壳、植株、土壤以及田水中的平均加标回收率为71.8%~103.6%,相对标准偏差为1.7%~9.2%;西草净在0.005~2.5mg/L范围内线性良好,相关系数为0.9979,西草净在不同样品中的平均加标回收率为75.0%~107.3%,相对标准偏差在1.7%~11.9%之间。该方法重复性好,准确度、精密度均能满足农药残留量分析与检测的技术要求。

    Abstract:

    A method for the simultaneous determination of residue of pretilachlor and simetryn in rice filed environment by ultra-performance liquid chromatography tandem mass-spectrometry (UPLC-MS/MS) was established. The residues in unpolished rice, rice husk, plant, soil and field water were extracted by acetonitrile, purified by N-propyl ethylenediamine. The residues of pretilachlor and simetryn in samples were determined by UPLC-MS/MS. Pretilachlor showed a good linear relationship in the range of 0.01~ 5.0mg/L with the correlation coefficient of 0.9974 and the average recovery rates in unpolished rice, rice shell, plant, soil and field water were 71.8%~103.6%; Simetryn showed a good linear relationship in the range of 0.005~2.5mg/L with the correlation coefficient of 0.9979, and the average recovery rates in different samples were 75.0%~107.3% with their relative standard deviations of 1.7%~9.2%. The method has good repeatability, accuracy and precision, and can meet the technical requirements.

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曲丽萍,李雪茹,陈国峰,刘 峰,董见南,尤红梅,吕 洋,陈宏远,李玉琼.超高效液相色谱—串联质谱法同时测定水稻中丙草胺和西草净残留[J].粮油食品科技,2017,25(4):60-63.

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  • 在线发布日期: 2017-07-20
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