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A New Technique for Simple and Rapid Discrimination of the Stages of Used Oil Degradation
Technical Paper
2009-01-1765
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A simple colorimetric method for determination of base number (BN) [1] in used engine oil with test strips was developed. As oil ages with use, the alkalinity decreases. Thus titration methods are commonly employed for the determination of BN. In this research, test strips were constructed using a pH indicator impregnated in a membrane filter. The color of the test strip changed from pink to green with sufficient alkaline in the engine oil. When the membranes are acid pretreated, this method can discriminate among different degrees of BN loss. Thus the new technique has been successful applied to judge the degradation stage of engine oil.
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Endo, M., Watanabe, T., Tochigi, H., and Yamamoto, K., "A New Technique for Simple and Rapid Discrimination of the Stages of Used Oil Degradation," SAE Technical Paper 2009-01-1765, 2009, https://doi.org/10.4271/2009-01-1765.Also In
References
- Japanese Industrial Standards 2008
- Japan Automobile Standard Organization
- Yokota F. Abe S. “Solid Phase Colormetry of Trace Metal Irons Based on a Tristimulus Chromaticity Diagram Simultaneous Determination of Iron( II ) and Iron( III ).” Analytical Communications 34 111 112 1997
- Yokota F. Endo M. Abe S. “Solid-phase Preconcentration/Tristimulius Colorimetry of Trace Cobalt(II), Nickel(II) and Iron(II,III) by Using the L*a*b* Chromaticity Diagram System Bunseki Kagaku 48 12 1135 1140 1999