Determination of trace ethylene glycol in industrial solvents and lubricants using phenyl boronic acid derivatization and multidimensional gas chromatography |
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Authors: | J Luong R Gras HJ Cortes RA Shellie |
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Institution: | 1. Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia;2. Dow Chemical Canada ULC, Highway 15, Fort Saskatchewan, Alberta T8L 2P4, Canada;3. HJ Cortes Consulting LLC, Midland, MI 48642, USA |
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Abstract: | A practical gas chromatographic approach is introduced for the characterization of trace ethylene glycol in industrial solvents and lubricants. The analytical approach employs single step derivatization technique that effectively converts ethylene glycol to the cyclic boronate ester (2-phenyl-1,3,2-dioxaborolane), using phenyl boronic acid as a derivatizing reagent. The separation of the derivatized product was achieved by using multidimensional gas chromatography. Heavy lubricant matrices like engine crankcase oil were back-flushed to improve sample throughput and system cleanliness. Detection and quantitation of 2-phenyl-1,3,2-dioxaborolane was conducted with mass spectrometry in selected ion monitoring mode. |
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Keywords: | Multidimensional gas chromatography Planar microfluidic device Monoethylene glycol Phenyl boronic acid Ethylene glycolphenyl boronate 2-Phenyl-1 3 2-dioxaborolane |
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