xiang ying analysis technology co., LTD., established in GC7990 quartz capillary column and flame photometric detector (FPD) was developed for the determination of trace H2S in high purity ethylene gas chromatography analysis method. The analysis on sampling system is discussed and the requirements of the chromatographic system, and the operating conditions of flame photometry detector (FPD) having satisfactory choice. 10 x 10-6 H2S gas repeatability experiment, the variation coefficient was 0.2%, 0.6 ~ 1.1 in high purity ethylene sample x 10-6 H2S, recovery between 96 ~ 98.4%, establish method can meet the needs of the polyethylene production and raw material analysis.

          滕州市翔鷹分析技術有限公司建立了用GC7990石英毛細管柱和火焰光度檢測器(FPD)測定高純度乙烯中微量H2S的氣相色譜分析方法.討論了該項分析對采樣系統及色譜系統的要求,并對FPD檢測器的操作條件進行了選擇.10×10-6 H2S標氣重復性實驗,變異系數為0.2%,測定高純度乙烯樣品中0.6～1.1×10-6H2S,回收率在96～98.4%之間,建立的方法可以滿足聚乙烯生產及原材料分析的需要.