CUTTING OFF DEVICE OF SAMPLE INTRODUCTION BETWEEN CHROMATOGRAPH AND SUCCEEDING ANALYZING EQUIPMENT

摘要

PURPOSE:To eliminate a blockaded space by a branched pipe line and to remove obstacles due to the residence of sample components by using the side of a main gas pipe line as a valve. CONSTITUTION:In case of introducing the flowing components out of a gas chromatograph G to a mass spectrometer M, a silica capillary K is inserted into the inner part of a nozzle (n) and an opening hole (b) is shut by the capillary K itself. A gas flowed out of the gas chromatograph G is jetted from the nozzle (n) and introduced to an orifice (f). When the sample introduction to the mass spectrometer is stopped, the tip end of the capillary K is retreated to the left side of the opening hole (b). The flowing gas out of the gas chromatograph is flowed from the opening hole (b) to a waste gas chamber C and is sucked and removed by a pump P. The problem that a part of the sample components is diffused and introduced into the blockaded space and flowed gradually to the succeeding analyzing equipment can be solved.