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

WANG Shu-Hua, FENG Guo-Dong, ZOU Xiang-Yu, JIANG Jie, HUAN Yan-Fu, DOU Wen-Chao, JIN Qin-Han   

  1. Institute of Miniature Analytical Instrumentation, College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral
    Analytical Instruments, Jilin University, Changchun 130021, China
  • Received:2005-11-07 Revised:1900-01-01 Online:2006-11-10 Published:2006-11-10
  • Contact: JIN Qin-Han

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Abstract: 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 atom
ic 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 successfully applied to the analysis of the lubricating oil samples.

Key words: Simultaneous MPT-AES, Aviation lubricating oil, Wear metal, Reflux extraction

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