Determination and dissipation of mesotrione and its metabolites in rice using UPLC and triple-quadrupole tandem mass spectrometry
Determination and dissipation of mesotrione and its metabolites in rice using UPLC and triple-quadrupole tandem mass spectrometry
复制标题
UPLC 和三重四极杆串联质谱法测定大米中甲基磺草酮及其代谢物的消散
DOI：
10.1016/j.foodchem.2017.02.079
复制
发表时间：
2017-08-15
期刊：
影响因子：
8.8
通讯作者：
Zheng, Yongquan
中科院分区：
文献类型：
--
作者：
Du, Pengqiang;Wu, Xiaohu;Zheng, Yongquan
采用超高效液相色谱-串联四极杆质谱（UPLC-Xevo TQ-S-MS/MS）联用技术，建立了水稻、水稻植株、稻壳、水和土壤中除草剂甲三酮及其两种代谢物[4-甲基磺酰基-2-硝基苯甲酸（MNBA）和2-氨基-4-甲基磺酰基苯甲酸（AMBA）]的高效、快速测定方法。加样回收率为68.6% ~ 108.4%。日内相对标准偏差（RSD）为2.0% ~ 14.4%，日内RSD为1.9% ~ 11.4%。中三酮、MNBA和AMBA的定量限为0.146 ~ 4.545 μ g kg（-1）。用商业配方在三个地点进行了耗散和残留测定。这些化合物在水稻植株、土壤和水中的耗散速度快，在收获时均未发现残留。(C) 2017 Elsevier Ltd.版权所有。
In this study, an efficient and fast method for the determination of the herbicide mesotrione and its two metabolites [4-methylsulfonyl-2-nitrobenzoic acid (MNBA) and 2-amino-4-methylsulfonylbenzoic acid (AMBA)] in rice, rice plants, rice hulls, water, and soil was developed, using ultra performance liquid chromatography coupled with tandem quadrupole (Xevo TQ-S) mass spectrometry (UPLC-Xevo TQ-S-MS/MS). The recoveries of the compounds were 68.6%-108.4% at different levels. The intra-day relative standard deviation (RSD) ranged from 2.0% to 14.4%, and the inter-day RSD, from 1.9% to 11.4%. The limits of quantification (LOQ) were ranged from 0.146 to 4.545 mu g kg(-1) for mesotrione, MNBA and AMBA. Dissipation and residual assays with the commercial formulation were conducted at three locations. The dissipation rates of the compounds were fast in rice plants, soil, and water, and residues at harvest were not detected in any of the three localities. (C) 2017 Elsevier Ltd. All rights reserved.