2006•Natural Gas Chemical IndustryRequires access
Determination of Four Residual Organic Solvents in Beta-carotene by Headspace Capillary Gas Chromatography
Zhang Ru-ying
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Abstract
The contents of four residual organic solvents inβ-carotene: ethanol,tetrahydrofuran,n-heptane and toluene,were determined by the headspace capillary gas chromatography which used HP-5 capillary column(30m×0.25mm×0.25μm),FID detector,N,N-dimethylformamide solvent,50℃oven temperature,200℃injector temperature,and 250℃detector temperature.The four residual organic solvents were completely separated,and the sensitivity and accuracy of this method satisfied the requirement of determining residual organic solvent amounts.