Determination of Ethylene Glycol in Used Engine Oil by Headspace-Gas Chromatography
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چکیده
The presence of ethylene glycol in used motor oil is an indication of antifreeze coolant leakage into the crankcase of an internal combustion engine, thus predicting engine-wear problems. Several options for the determination of glycols currently exist, including colorimetric tests which are easy to perform, but subjective in interpretation and not particularly sensitive, fast or cost effective. Gas chromatography (GC) can also be used for analysis, but the ethylene glycol is difficult to detect and quantify due to its low molecular weight, low volatility and high polarity. Ethylene glycol chromatographic peak shape is often difficult to control and carryover can be a problem. Determination of Ethylene Glycol in Used Engine Oil by Headspace-Gas Chromatography A P P L I C A T I O N N O T E
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