title: [MOA spectral analysis of additive element contents in lube oil].
abstract: The determination of the additive contents of marine lubrication oil by using atomic emission spectrometry is described. A new measuring method is suggested in accordance with the working principle of MOA atomic emission spectral instrument. The additive element contents, if not within the precision limits of MOA atomic emission spectra, are to be measured by being diluted with a standard oil. Error analysis is conducted and the calibration curve method is used. The testing result indicates that the RSD of Ca, P and Zn is 1.6%, 4.8% and 4.6% respectively, and the error result of oil sample before and after diluting is 4.21%, 6.99% and 5.09% respectively.
authors.affiliation: Marine Engineering College, Dalian Maritime University, China.
authors.forename: Hai-jun
authors.initials: HJ
authors.lastname: Wei
authors.forename: Hong-liang
authors.initials: HL
authors.lastname: Yu
authors.forename: De-lin
authors.initials: DL
authors.lastname: Guan
authors.forename: Pei-ting
authors.initials: PT
authors.lastname: Sun
authors.forename: Hong-zhi
authors.initials: HZ
authors.lastname: Wang