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[Determination of residual epoxyethane in medical instruments by headspace capillary gas chromatography]
Dan Li1, Zhen-yuan Wang, Shun-ning Xia
1Nanjing Institute for Drug Control.
Objective:
To establish a method of determining the residual epoxyethane in medical instruments.
Method:
An HP-5 capillary column (30 m x 0.32 mm x 0.25 microm), an FID detecter and an oven were used in the determination. The oven temperature was kept at 120 degrees C for 8 minutes, the example inlet temperature was kept at 200 degrees C, while the detecter temperature was kept at 250 degrees C.
Result:
The method has a linear range between 5.1920-51.920 microg, (r = 0.997, n = 6). The average rate of recovery of the injecter is 103.3%. The average rate of recovery of the infusion devices is 81.04%.
Conclusion:
The method has been proved to be convenient, sensitive and accurate. It is suitable for the determination of residual organic solvents in medical instruments.
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