二级冷阱（TENAX管） 固定污染源废气甲硫醇8种有机硫

固定污染源废气采样位置与采样点、采样频次和采样时间的确定、排气参数的测定和采样操作执行HJ/T397、GB/T16157和HJ732的相关规定。采样时，应按规定开启加热采样管电源，气袋须用样品气清洗少3次，再使用采样装置（6.1）采集样品气。

 在样品分析之前须观察样品气袋内壁，如有液滴凝结现象，则应将气袋放入烘箱中加热液滴凝结现象消除，然后迅速分析。如无液滴凝结现象，则可将气袋（6.9）或罐（6.6）直接连接在自动进样器（6.5）上分析。

  注：使用烘箱对气袋加热时，应设置合适加热温度(不宜超过50℃)，避免采样袋受热变形。

  7.2.2试样的稀释

  当气样中含硫有机化合物的浓度超过标准曲线线性范围时，需要对样品进行稀释。当稀释倍数不超过3时，可对罐（6.6）加氮气（5.8）进行稀释。须使用真空压力表（6.10）测定罐内压力，并按公式（1）计算稀释倍数。当稀释倍数超过3时，可用气密进样针（6.11）配合堵头（6.13）在预先清洗并抽真空的罐中注入适量样品，再充氮气加压到101kPa，并按公式（2）计算稀释倍数。


固定污染源废气甲硫醇8种有机硫  测试谱图：


8 kinds of sulfur-containing compounds in stationary pollution source exhaust gas methyl mercaptan
8 kinds of sulfur-containing compounds of methyl mercaptan in the exhaust gas of stationary pollution source Details:

Name: Capillary Column
Stationary phase: 100% dimethyl polysiloxane stationary solution
Specification: 60m*0.32mm*1.04um
Model: HH-1
Application: Determination of 8 kinds of sulfur-containing organic compounds such as methyl mercaptan, waste gas from stationary sources

This standard specifies the air bag sampling-pre-concentration/gas chromatography-mass spectrometry method for the determination of 8 sulfur-containing organic compounds such as methyl mercaptan in the exhaust gas of stationary pollution sources.



  This standard is applicable to the determination of 8 sulfur-containing organic compounds in fixed pollution source exhaust gas: methyl mercaptan, ethyl mercaptan, methyl sulfide, methyl ethyl sulfide, carbon disulfide, ethyl sulfide, dimethyl disulfide, and thiophene.



  When the sampling volume is 50.0ml, the detection limit of sulfur-containing organic compounds in this standard is 0.01～0.02mg/m3, and the lower limit of determination is 0.04～0.08mg/m3. See Appendix A for details.

Test spectrum of 8 sulfur-containing compounds of fixed pollution source exhaust gas methyl mercaptan: