自动回流萃取-MPT全谱仪测定航空润滑油中磨损金属的含量  

Determination of Wear Metals in Aviation Lubricating Oil by Using a Simultaneous MPT Spectrometer with an Automatic Reflux Extraction System

作　　者：汪淑华[1] 冯国栋[1] 邹向宇[1] 姜杰[1] 郇延富[1] 窦文超[1] 金钦汉[1] 

机构地区：[1]吉林大学化学学院微分析仪器研究所吉林省光谱分析仪器工程技术研究中心,长春130021

出　　处：《高等学校化学学报》2006年第11期2048-2051,共4页Chemical Journal of Chinese Universities

基　　金：吉林省科技发展计划重点项目(批准号:20010306-1)资助

摘　　要：将萃取与回流相结合，建立了一种处理航空润滑油中磨损金属的新方法，并用MPT全谱仪对磨损金属含量进行了同时检测．该方法基本上实现了样品处理的全自动化，克服了常用方法的部分缺点，对Zn，Cd，Cu，Fe和Ph的检出限（3σ）分别为0．084，0．043，0、022，0.052和0．064μg／g；相对标准偏差均小于5％（n=5）；回收率为94．5％～107．4％、对3个润滑油样品的检测结果令人满意．A novel, simple and economic sample pretreatment system based on reflux extraction was developed for the determination of wear metals in the used aviation lubricating oil by using a simultaneous microwave plasma torch atomic emission spectrometer（MPT-AES）. The operating parameters for both sample pretreatment and analysis were studied and optimized. The detection limits are 0. 084, 0. 043, 0. 022, 0. 052, 0. 064 μg/g for Zn, Cd, Cu, Fe and Pb, respectively. The relative standard deviations are less than 5% （n = 5） , and the recovery ratios of these elements are in the range of 94. 5%-107.4%. The new system was suecessfully applied to the analysis of the lubricating oil samples.

关 键 词：MPT全谱仪 航空润滑油 磨损金属 回流萃取 

分 类 号：O657[理学—分析化学]