Applying chemometric procedures for correlation the FTIR spectroscopy with the new thermometric evaluation of Total Acid Number and Total Basic Number in engine oils

Abstract Currently, the main trend is to employ spectroscopic techniques for condition assessment of used engine oils. That a consequence requirement increasing Oil Condition Monitoring (OCM) efficiency. Usually, FTIR (Fourier Transform Infra-red) Spectroscopy employed achieve ability measuring oil and uses spectrum generate relation between attribute-spectrum. To allow this connection, it necessary develop chemometric studies. However, procedure needs previous validation correlate with value attribute measured by standardised techniques. One potential study acidification Total Acid Number (TAN), specially employing ASTM D8045 standard that measures TAN level thermometric titration. The new offers better chemical path quantify accurately oil. And other basic parameter Basic (TBN) also possible determinations. Both these parameters are correlated, therefore focused on generation mathematical model describes shape its spectrum. Specifically, in work has been shown applicability procedures conjunction titration determining TBN values an