Nguyen Thanh Dong, Lee Byung Soo, Lee Bo Reum, Lee Dae Myung, Lee Gae-Ho
Department of Chemistry, Chungnam National University, Daejeon, South Korea.
Rapid Commun Mass Spectrom. 2007;21(18):3115-22. doi: 10.1002/rcm.3199.
A rapid, specific and sensitive multiresidue method based on the Quick Easy Cheap Effective Rugged and Safe (QuEChERS) sample preparation method and gas chromatography with mass spectrometric detection by selected ion monitoring (GC/MS-SIM) has been developed for the routine analysis of 109 pesticides in rice. The method uses one quantification ion and two identification ions. Temperature control during sample preparation helps improve the recovery of thermally labile pesticides such as captan. The method was validated by the analysis of samples spiked at 0.025-0.150 mg/kg in rice matrix. The recoveries of all pesticides were between 80% and 115% with a relative standard deviation of less than 15%. The limit of quantitation (LOQ) for most compounds met the maximum residue limits (MRLs) for pesticides in rice in Korea.
基于快速、简便、廉价、有效、耐用且安全（QuEChERS）样品制备方法以及气相色谱-质谱联用选择离子监测（GC/MS-SIM）技术，开发了一种用于大米中109种农药常规分析的快速、特异且灵敏的多残留方法。该方法采用一个定量离子和两个定性离子。样品制备过程中的温度控制有助于提高如克菌丹等热不稳定农药的回收率。通过对大米基质中添加浓度为0.025 - 0.150 mg/kg的样品进行分析，对该方法进行了验证。所有农药的回收率在80%至115%之间相对标准偏差小于15%。大多数化合物的定量限（LOQ）符合韩国大米中农药的最大残留限量（MRLs）。
