基于超高效液相色谱-高分辨质谱快速筛查绿茶中12种植物生长调节剂的方法研究

建立了超高效液相色谱-高分辨质谱(ultra performance liquid chromatography-high resolution mass spectrometry,UPLC-HRMS)快速筛查绿茶中2,4-滴、对氯苯氧乙酸、吲哚丁酸、氯吡脲和吲哚乙酸等12种植物生长调节剂的方法。采用CAPCELL PKA-C18色谱柱(100 mm×2.1 mm,2μm),正离子模式下以体积分数为5%的甲醇水溶液(含有5 mmol/L乙酸铵和体积分数为0.1%甲酸)为流动相;负离子模式下以体积分数为5%甲醇水为流动相,梯度洗脱。在全扫描采集模式下,基于化合物的保留时间、准分子离子峰的精确质量...

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Published in农药学学报 Vol. 19; no. 4; pp. 491 - 499
Main Author 许旭 侯雪 韩梅 蔡甜 陆阳 李荣荣
Format Journal Article
LanguageChinese
Published 2017
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Summary:建立了超高效液相色谱-高分辨质谱(ultra performance liquid chromatography-high resolution mass spectrometry,UPLC-HRMS)快速筛查绿茶中2,4-滴、对氯苯氧乙酸、吲哚丁酸、氯吡脲和吲哚乙酸等12种植物生长调节剂的方法。采用CAPCELL PKA-C18色谱柱(100 mm×2.1 mm,2μm),正离子模式下以体积分数为5%的甲醇水溶液(含有5 mmol/L乙酸铵和体积分数为0.1%甲酸)为流动相;负离子模式下以体积分数为5%甲醇水为流动相,梯度洗脱。在全扫描采集模式下,基于化合物的保留时间、准分子离子峰的精确质量数、碎片离子的精确质量数和同位素分布匹配指数,对目标物进行筛查分析。结果表明:12种植物生长调节剂在绿茶中的报告限(RL)为0.01 mg/kg;在0.01、0.1和0.5 mg/kg 3个添加水平下,其回收率在61%~130%之间,相对标准偏差在1.8%~17%之间。该方法简便快捷,可用于绿茶中常用植物生长调节剂的筛查。
Bibliography:XU Xu1,2,3, HOU Xue2, HAN Mei2, CAI Tian1,3, LU Yang2, LI Rongrong2 (1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041; 2. Center of Analysis and Testing, Sichuan Academy of Agricultural Sciences~Laboratory of Quality and Safety Risk Assessment for Agro-products (Chengdu), Ministry of Agriculture, Chengdu 610066; 3. University of Chinese Academy of Sciences, Beijing 100049)
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A screening method was established for the determination of twelve plant growth regulators(PGRs) in green tea using ultra performance liquid chromatography-high resolution mass spectrometry(UPLC-HRMS), including 2,4-dichlorophenoxy acetic(2,4-D), 4-chlorophenoxy-acetic acid(4-CPA),4-(3-indolyl)-butyric acid(IAA), forchlorfenuron(CPPU) and 4-indoly-3-ylbutyric acid(IBA), etc. The extract was measured directly by UPLC-HRMS with electrospray ionization in both positive and negative modes. The analytes were separated on CAPCELL PKA-C18 column(100 mm × 2.1 mm, 2 μm)with gradient elution.In the positi
ISSN:1008-7303