| 摘要 |
The invention relates to an improvement in gas chromatographic analysis, consisting in burning off the non-volatile products remaining in the injector after an analysis. The invention also relates to an advanced injection device comprising a combustion-flash chamber (7), wherein the sample that is to be analyzed is introduced with the aid of a syringe, and a lateral tube (8) that enables a combustion gas containing oxygen to be introduced through a pressure drop (35). When the volatile constituents have been vaporized and analyzed on the column (18), the combustion gas is introduced in the tube (7) by opening a valve (32) when the valve (31) enabling the vector gas to arrive inside the injector is closed and a valve (5) is open. The injector becomes de-pressurized and the combustion gas flows through the injector, is brought to a sufficient temperature to enable combustion of the non-volatile residues and is then discharged, together with the combustion gas, via the valve (5). |
