| Dynamic headspace gas chromatography equipped with FID was applied to test the acetaldehyde, acetone, methanol, acrolein, acrylonitrile, acetonitrile and pyridin in water. The dynamic headspace conditions were optimized. The method had good linearity from 0.152 mg/L to 7.92 mg/L. The method detection limits were between 0.008 mg/L and 0.048 mg/L. The spiked recovery in blank water ranged from 103% to 111%,with the RSDs 5.4%~8.7%. This method was used to test wastwater of some pharmaceutical enterprise and surface water. Only methanol, acetonitrile and pyridin were detected in wastwater. |
