Trace sulfide content in gases was determined by Gas chromatography.Two dilu-tion methods of ordinary glass syringe nitrogen injection and cross type standard gas premixed in-jection used for sample injection were compared and analyzed,and reliable suggestions about precautions in course of sample analysis were proposed.The results showed that the cross type standard gas premixed injection method possessed higher reliablity and precision,which could meet experiment condition.On the other hand,the method had the following advantages,such as high sensitivity,good repeatability,simple operation,etc.,which was practical for conduc-ting inspection and analysis work.
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