H2S in high purity ethylene is very low, generally below 1 × 10-6, but more than a certain amount of H2S will poison the main catalyst, which seriously reduce the activity of the catalyst, the impact of ethylene polymerization and polyethylene product quality, so ethylene The detection of trace hydrogen sulfide in products has an important role in the actual production.
Tengzhou Xiangying Analytical Technology Co., Ltd. established a gas chromatographic method for the determination of trace H2S in high-purity ethylene by quartz capillary column and flame photometric detector (FPD). The requirements of sampling system and chromatographic system were discussed, and the operating conditions of FPD detector were selected. 10 × 10-6 H2S standard gas repeatability test, the coefficient of variation of 0.2%, determination of high purity ethylene samples of 0.6 ~ 1.1 × 10-6 H2S, the recovery rate of 96 ~ 98.4%, the establishment of the method to meet the polyethylene Production and raw material analysis needs.
高纯度乙烯中的H2S虽然很低,一般在1×10-6以下,但大于一定含量的H2S会使主催化剂中毒,从而严重降低催化剂的活性,影响乙烯聚合反应及聚乙烯产品质量,所以乙烯产品中微量硫化氢检测在实际生产中有着重要的作用。
滕州市翔鹰分析技术有限公司建立了用石英毛细管柱和火焰光度检测器(FPD)测定高纯度乙烯中微量H2S的气相色谱分析方法。讨论了该项分析对采样系统及色谱系统的要求,并对FPD检测器的操作条件进行了选择。10×10-6 H2S标气重复性实验,变异系数为0.2%,测定高纯度乙烯样品中0.6～1.1×10-6 H2S,回收率在96～98.4%之间,建立的方法可以满足聚乙烯生产及原材料分析的需要。
XiangyingGC7990plus features:
1 excellent performance, competitive price, to meet the customers' choice
2 multi industry adaptability
3 outstanding performance in all kinds of harsh environment
INJ
A variety of sampling ports can be equipped with: packed column inlet, shunt / non shunt capillary inlet,
Hydrogen flame ionization detector (FID)
Maximum use temperature: 400
The minimum detection limit: -12 = 2.5*10 g/s (n-C16)
Linear range: 107 (+ 10%)
XiangyingGC7990plus特点：
- 卓越的性能，具有竞争力的价格，满足广大客户的选择
- 多行业适应性
3. 在各种苛刻环境下均表现出色
进样口
多种进样口可配：填充柱进样口、分流/不分流毛细管进样口、
氢火焰离子化检测器（FID）
***高使用温度：400℃
***小检出限：≤2.5*10 -12 g/s(n-C16)
线性范围：107（±10%）
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