Correlation of Emission and Atomic Absorption Techniques on the Analysis of Lubricating Oil Samples for Wear Metal Contamination

摘要

The objectives of the effort were to gather a large amount of emission and atomic absorption data on controlled oil samples and to tabulate these data to indicate what correlations, if any, existed within each technique as well as between the two techniques. One hundred and ninety samples were analyzed by 25 different laboratories using their particular techniques. The samples consisted of repeat and standard samples for testing laboratory repeatability and accuracy, respectively. Accuracy indices based on the standard samples were computed to relate laboratory accuracies. The precision of each laboratory was tabulated as a function of element, acceptability, and overall comparison with other laboratories. This effort has shown that both the emission and the atomic absorption equipment have potential for precision and accuracy. With the acquirement of precise equipment and the establishment of standard operating procedures, data can be generated and correlated among different techniques, laboratories, or bases. Different results on identical oil samples have been shown to be caused by a lack of standardization among the laboratories. Correlation is essential to the effectiveness of the Spectrometer Oil Analysis Program. (Author)