Determination of Traces of Glycols by Gas Chromatography
Fractional parts per million of ethylene glycol, propylene glycol, and diethylene glycol in water are determined by gas chromatography using a flame-ionization detector, a mixture of helium and steam as the carrier gas, and teflon as the column support. A prior distillation to remove most of the water and other more volatile solvents reduces the limit of detection to 0.02 ppm glycol. Traces of glycols in water-immiscible organic solvents are determined by extracting the glycols into water before analysis.
KeywordsMemory Effect Propylene Glycol Steam Generator Diethylene Glycol Water Peak
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