| 分散固相萃取结合HPLC-MS/MS同时测定茶叶中丁醚脲及其降解产物 |
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| 引用本文： | 肖利民,王美玲,戴洁芸,戴华.分散固相萃取结合HPLC-MS/MS同时测定茶叶中丁醚脲及其降解产物[J].食品与机械,2018,34(5):82-86. |
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| 作者姓名： | 肖利民 王美玲 戴洁芸 戴华 |
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| 作者单位： | 长沙理工大学化学与生物工程学院;湖南出入境检验检疫局 |
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| 摘 要： | 建立分散固相萃取(QuEChERS)—高效液相色谱—串联质谱(HPLC-MS/MS)法同时测定茶叶中丁醚脲及其降解产物残留量的方法。样品中丁醚脲及其降解产物用乙腈提取,提取液经过分散固相萃取法(QuEChERS)净化后,采用C_(18)色谱柱分离,以0.1%乙酸水溶液和乙腈为流动相,梯度洗脱,在电喷雾离子源正离子模式下采用质谱多反应监测(MRM)模式检测,外标法定量。结果表明,丁醚脲的定量限为0.01mg/kg,丁醚脲—甲酰胺的定量限为0.005mg/kg、丁醚脲—脲的定量限为0.003mg/kg。在3个浓度水平下平均回收率为62.2%~99.6%;相对标准偏差(RSD%)为1.3%~9.4%。该方法能同时对茶叶中丁醚脲及其降解产物进行定性、定量检测,方法简单、快速,准确度、灵敏度高,且减少了前处理过程中丁醚脲的分解。可同时对茶叶中丁醚脲及其降解产物进行定性、定量检测,满足残留检测的需要。
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| 关 键 词： | 丁醚脲及其降解产物 茶叶 高效液相色谱-串联质谱（HPLC-MS/MS） QuEChERS |
| 收稿时间： | 2018/2/3 0:00:00 |
Simultaneous determination of diafenthiuron and its degradation products in teas by dispersive solid-phase extraction and high performance liquid chromatography-tandem mass |
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| XIAOLimin,WANGMeiling,DAIJieyun,DAIHua.Simultaneous determination of diafenthiuron and its degradation products in teas by dispersive solid-phase extraction and high performance liquid chromatography-tandem mass[J].Food and Machinery,2018,34(5):82-86. |
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| Authors: | XIAOLimin WANGMeiling DAIJieyun DAIHua |
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| Affiliation: | School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha, Hunan410076, China;Hunan Entry-Exit Inspection and Quarantine Bureau of China, Changsha, Hunan 410004, China |
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| Abstract: | |
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| Keywords: | Diafenthiuron and its degradation products tea high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) QuEChERS |
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