A method of the solid phase dynamic micro extraction coupled with gas chromatography mass spectrometry (SPDE GC MS) was developed for the determination of 8 odorous organics, including 2 isopropyl 3 methoxypyrazine(IPMP), 2 isobutyl 3 methoxypyrazine(IBMP), 2 methylisoborneol(2 MIB), β cyclocitral, 2,4,6 chloroanisoles(2,4,6 TCA), geosmin(GSM), α ionone and β ionone. By optimizing the test conditions, the method had good linearity in the range of 2.00 ng/L to 100 ng/L. The method detection limits were from 1.0 ng/L to 4.4 ng/L. The recovery of blank sample spiked in 3 mass concentration levels ranged from 81.0% to 121%. The relative standard deviations (RSDs,n=6) were from 1.7% to 8.9%. Applied this method to the actual water samples from a reservoir, 2 MIB, β cyclocitral, α ionone and β ionone were detected, the others were not. |