。采用60 m低硫毛細(xì)管色譜柱和FPD檢測器,分離、分析了焦?fàn)t煤氣中H_2S、COS、CS_2、噻吩四種主要硫化物。采用優(yōu)化的VI進(jìn)樣口和特殊的硫鈍化管線,提高了儀器靈敏度,方法檢出限可達(dá)1mg/Nm~3。采用多點(diǎn)校正及二次曲線擬合,測量范圍從10 mg/Nm~3到300 mg/Nm~3,并與碘量法測定煤氣中硫化氫進(jìn)行比對,經(jīng)過度試驗(yàn),準(zhǔn)確度驗(yàn)證,證明此方法簡便快捷、準(zhǔn)確,滿足痕量分析的要求。

煤氣中硫化氫含量的毛細(xì)管柱色譜法 圖片：



Capillary column chromatography of hydrogen sulfide in gas
Capillary Column Chromatography of Hydrogen Sulfide in Gas Details:

Stationary phase: dedicated
Specification: 30m*0.53mm
Model: HH-Sulfur-30
Application: H2S/COS/SO2/CS2 determination


Tengzhou Haohao Chromatography Instrument Technology Service Co., Ltd. systematically studied the determination of hydrogen sulfide in gas by gas chromatography, and replaced the wet gas flow meter and absorption bottle with a highly inert polyvinyl fluoride (PVF) gas sampling bag, simplifying sampling. operating. The main sulfides of H_2S, COS, CS_2 and thiophene in coke oven gas were separated and analyzed by 60 m low sulfur capillary column and FPD detector. The optimized VI inlet and special sulfur passivation pipeline improve the sensitivity of the instrument, and the detection limit of the method can reach 1mg/Nm~3. Multi-point calibration and quadratic curve fitting were used. The measurement range was from 10 mg/Nm~3 to 300 mg/Nm~3, and the hydrogen sulfide in the gas was compared by iodometric method. After precision test, the accuracy was verified. It proves that this method is simple, fast, accurate and reliable, and meets the requirements of trace analysis.

Capillary column chromatography of hydrogen sulfide in gas