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利用脉冲加热气相色谱法测定金属中气体时,使待测气体空白值低而稳定是必要的。为此往往需要对坩埚进行反复脱气处理,这样就大大延长了一个试样的分析时间。为了提高分析速度,我们在大连第二仪表厂生产的SQM-1型脉冲加热气相色谱仪上作了一些改进,总结出了一种氢、氧的快速分析方法,对于一个样品从装坩埚除气到分析完毕,只需8分多钟。 影响空白值大小的因素比较多:载气纯度、坩埚质量、加热电流(或电压)大小和
The use of pulse heating gas chromatography in the determination of metal gas, the test gas blank value is low and stable is necessary. To this end, it is often necessary to degas the crucible repeatedly, thus greatly extending the analysis time of a sample. In order to improve the speed of analysis, we made some improvements on the SQM-1 pulse-heating gas chromatograph manufactured by Dalian No.2 Dacromet Factory and summarized a rapid hydrogen and oxygen analysis method. For a sample from degassing crucible To the analysis is completed, just 8 minutes. Affect the size of the blank value of the more factors: carrier gas purity, crucible quality, heating current (or voltage) size and