การวิเคราะห์ความบริสุทธิ์ของไฮโดรเจน Analysis of UHP Hydrogen production using micro GC
การวิเคราะห์ความบริสุทธิ์ของไฮโดรเจน Analysis of UHP Hydrogen production using micro GC
LD13-01 Analysis of UHP Hydrogen production using Plasmadetek-2 & micro GC Multidetek-2
The high purity hydrogen production demand is rising quickly and the need of measuring low ppb trace in a quick analysis run is then required. Most of the GC technologies available on the market use the same methods for years which required quite complex systems. Those systems require the use of different detectors to cover the application and a complex chromatograph configuration what make the price of such system increasing. The complexity of the chromatograph operations, the long analysistime and the limitations to achieve low ppb measurement are often faced.
THE SOLUTION:
two sensors to measure O2 and N2 respectively in selective mode. Refer to Figure 1 for the configuration drawing. Going this way, the analysis time can be reduced, the sensitivity increased and it gives an easy to use system with no consumable or maintenance required. An analysis example of impurities O2 & N2 in a hydrogen sample, using a standard ionization detector in combination with the same configuration that appears on Figure 1, has been used to generate the chromatogram that appears on Figure 2. We can clearly see the interference of the hydrogen over the traces O2 and N2. The hydrogen matrix interference overlaping the traces O2 will be amplified when going lower at low ppb level and it will becomes not possible to measure the impurities without using another techniques requiring more long columns, additional valves and H2 trap.At the opposite, on Figure 3 appears a chromatogram of traces O2 and N2 with the use of the PlasmaDetek-2 using its selective mode.
#ความบริสุทธิ์ของไฮโดรเจน
#UHPHydrogenNitrogen
#MicroGC