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| 液相色谱-电喷雾离子阱质谱联用测定水中14种除草剂 | |
| 引用本文： | 陈学国,李伟亮,朱昱,许英健.液相色谱-电喷雾离子阱质谱联用测定水中14种除草剂[J].刑事技术,2013(3):33-35. |
| 作者姓名： | 陈学国 李伟亮 朱昱 许英健 |
| 作者单位： | 1. 中国刑警学院法化学系,沈阳 110854;福州大学食品安全分析与检测教育部重点实验室,350108 2. 海南省三亚市公安局,572000 3. 中国刑警学院法化学系,沈阳,110854 |
| 基金项目： | 公安部应用创新项目，辽宁省自然科学基金项目 |
| 摘 要： | 目的建立水中14种除草剂液相色谱-电喷雾离子阱质谱联用分析方法。方法水样经固相萃取,洗脱液过膜后直接进行液相色谱-电喷雾离子阱质谱联用分析。结果水中14种除草剂定量分析线性关系良好,相关系数为0.995～0.998,检测限在0.005μg/mL～0.045μg/mL之间,在低、中、高3个不同浓度下,平均回收率在70.5%～110.2%之间,日内RSD均小于10.2%,日间RSD均小于14.4%。结论该方法具有快速、灵敏、高效等优点,能够满足相关司法鉴定工作的要求。 |
| 关 键 词： | 法医毒物分析 除草剂 液相色谱/质谱 水 |
Determination of 14 composite herbicides in water by liquid chromatography-mass spectrometry |
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| Institution: | CHEN Xue-guo, LI Wei-liang, ZHU Yu, et al. (China Criminal Police College, Shenyang 110854, China) |
| Abstract: | Objective To present a method for analyzing 14 kinds of composite herbicides in water samples. Methods Water samples were extracted with C18 solid-phase column, the eluents were analyzed by liquid chromatography and ion trap electro-spray mass spectrometry. Results Good linear ranges were obtained for all herbicides with the correlation coefficients of 0. 995-0. 998, and the detection limits were 0. 005-0. 045μg/mL. The average recoveries of 14 kinds of composite herbicides in water samples ranged from 70.5--110.2%, the average intra-day and inter-day relative standard deviations were less than 10.2% and 14.4%, respectively. Conclusion This method has high accuracy, good precision and sensitivity, and can be applied in the identification of composite herbicides in casework. |
| Keywords: | forensic toxicology composite herbicides liquid chromatography-mass spectrometry water |
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