??CCl4?C2Cl4

???,???C2-Cl4165.83?1.6311(15/4)?-22.4121?5.83?2.11kPa (15.8mmHg22)?10000?; ????????????(??)???^?,?????,??????,700?????????????

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????????70?????????????????????25PPM50PPM?????27PPM?????????????????????????????


??CCl4????????????????????????????????????????????????????????????????.



1.??????????????(20)1.595/???22.87677

2.????5??????????????????????

3.?????????^24??

4....