| 用于水中有机磷农药检测的离子迁移率谱仪预富集进样方法 |
| |
| 引用本文： | 程浩,高晓光,贾建,李建平,何秀丽.用于水中有机磷农药检测的离子迁移率谱仪预富集进样方法[J].分析化学,2010,38(11). |
| |
| 作者姓名： | 程浩 高晓光 贾建 李建平 何秀丽 |
| |
| 作者单位： | 中国科学院电子学研究所传感技术国家重点实验室,北京,100190 |
| |
| 基金项目： | 国家自然科学基金(No.60772017)资助 |
| |
| 摘 要： | 建立了检测水中有机磷农药的离子迁移率谱仪预富集进样方法。预富集器由表面覆盖有吸附薄膜的微热板、聚四氟乙烯电路板和管座组成,具有操作简单,无需有机溶剂,自加热,热容小,功耗低等优点。以马拉硫磷检测为例,分析了富集器解吸升温速率和离子迁移率谱仪半透膜温度对检测结果的影响。采用高温短时脉冲加热和低温维持加热相结合的解吸方式,既可形成较高的进样浓度脉冲,又可减少进入漂移管的杂质,有利于提高离子迁移率谱仪检测灵敏度。实验表明:采用所述预富集及两阶段加热解吸进样方法,对水中马拉硫磷的检出限为3.9μg/L,达到了国家标准对水中有机磷检测的要求。
|
| 关 键 词： | 预富集器 离子迁移率谱仪 有机磷农药 脉冲加热 |
Preconcentration and Introduction Method of Organophosphorus Pesticides in Water for Ion Mobility Spectrometer |
| |
| CHENG Hao,GAO Xiao-Guang,JIA Jian,LI Jian-Ping,HE Xiu-Li.Preconcentration and Introduction Method of Organophosphorus Pesticides in Water for Ion Mobility Spectrometer[J].Chinese Journal of Analytical Chemistry,2010,38(11). |
| |
| Authors: | CHENG Hao GAO Xiao-Guang JIA Jian LI Jian-Ping HE Xiu-Li |
| |
| Institution: | CHENG Hao,GAO Xiao-Guang*,JIA Jian,LI Jian-Ping,HE Xiu-Li ( State Key Laboratory of Transducer Technology,Institute of Electronics,Chinese Academy of Sciences,Beijing 100190) |
| |
| Abstract: | A method of sample preconcentration and introduction for an ion mobility spectrometer ( IMS) was proposed for the detection of organophosphorus pesticides ( OPPs) in water. The preconcentrator was composed of a microhotplate coated with an absorption film,a polytetrafluoroethylene ( PTFE) printed circuit board ( PCB) and a PTFE cylinder. It has the advantages of easy-operation,solvent-less,self-heating,low thermal capacity and low energy cost. The effects of the heating rate for absorption film and the semi... |
| |
| Keywords: | Preconcentrator Ion mobility spectrometer Organophosphorus pesticide Pulse heating |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
