不同柱前压控制方式对毛细管气相色谱法分离测定多种有机磷农药的效果比较

A new type of capillary split/splitless inlet that equipped with Electron Pressure Control (EPC)has beenused for separation and determination of multiorganophosphorus pesticides by CGC. The results for compari-son of the signal response got from two different inlet control modes showed that the response from the Electron Pressure Programming(EPP)mode was 2.1～22. 0 times higher than that from the Constant Flow(CF)mode on BP-10 and HP-101 capillary colunmns.