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- Title
Rapid identification and quantification of ethylene and propylene glycol in engine coolant by gas chromatography.
- Authors
Lancaster, Nicholas; Schomburg, Keith Cory
- Abstract
Determining the glycol type and concentration of an engine coolant is a useful analytical test for in-service testing laboratories to both identify the coolant type and determine whether the coolant is fit for its intended purpose. Too much glycol can result in poor heat transfer within the engine whereas too little glycol can increase the freeze point of the coolant. As such repeat testing over the lifespan of the coolant is requir ed to avoid potential problems and ensure the overall health of the cooling system. This paper details a GC method to rapidly separate ethylene and propylene glycol in under five minutes and determine the concentration of these glycols in percentage. Two preparation methods are detailed to demonstrate a simple 'dilute & shoot' preparation by diluting in deionised water (10-fold dilution) or isopropanol (100-fold dilution).
- Subjects
GAS chromatography; INTERNAL combustion engines; HEAT transfer; FREEZING points; GLYCOLS; PROPYLENE glycols; ETHYLENE glycol
- Publication
Tribologie und Schmierungstechnik, 2023, Vol 70, p19
- ISSN
0724-3472
- Publication type
Article
- DOI
10.24053/TuS-2023-0029