Title: CGC determination for residual quantity of ethanol and acetone in marine injection with headspace sampling
Abstract: Objective:To establish a method for the determination of residual quantity of ethanol and acetone in marine injection.Methods:The residual organic solvents were determined by GC with capillary column(DB-624)with FID detector and headspace sampling,which was nitorgen as the carrier gas.The temperature of the injection port was maintaining at 200 ℃ and that of detector at 250 ℃.The oven introduced sequential increasing of temperature programing.The initial column temperature was 40 ℃,maintaining it for 10 min,then raising the temperature to 120 ℃ at a rate of 50 ℃·min-1,and maintaining it at 120 ℃ for 5 min.The flow rate of N2 was 2.0 mL·min-1,headspace oven was set at a temperature of 70 ℃ for 30 min and the injection volume was 1 mL with headspace sampling.Results:The calibration curve showed a good linearity with the range of 9.769-156.3 μg·mL-1 for ethanol and with the range of 16.85-269.6 μg·mL-1for acetone.The average recoveries(n=6)of ethanol and acetone were 93.6%(RSD=1.6%)and 102.8%(RSD=0.96%),respectively.Conclusion:The method is accurate,reliable and sensitive for the determination of the residual quantity of ethanol and acetone in marine injection.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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