A Wavelength Modulated, Continuum Excited Furnance Atomic Fluorescence System for the Determination of Wear Metals in Jet Engine Lubricating Oils.
Abstract
A historical review is presented of atomic fluorescence, continuum excitation, and furnace atomization as they apply to wear metal determination in oils. The theories applicable to atomic fluorescence with a continuum source, wavelength modulation, signal to noise considerations and limits of detection are briefly presented. A system for the measurement of atomic fluorescence is described that consists of an electrically-heated graphite filament and flame (Air/C2H2 or N2O/C2H2) atomizer with 300-W Eimac xenon arc continuum excitation source, a wavelength modulated background connection system and an optically triggered electronic integrator. This system analyzes small volume (one microliter) of lubricating oil quickly and with no pretreatment. Real jet lubricating oils are analyzed for Cu, Mo and Al and the determinations are evaluated with respect to the accuracy and repeatability criteria of the Joint Oil Analysis Program. Sources of errors are discussed along with recommendations for future work. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1980
- Accession Number
- ADA092527
Entities
People
- Thomas F. Wynn Jr
Organizations
- Air Force Institute of Technology