Can atmospheric hydrogen be sampled using gas bags, and what are the standards? gb/t No clear requirements were found in 6681; seeking help from experts

This post was last edited by ylb913 on 2018-8-13 at 19:18. Hydrogen is a reducing agent, not an oxidizing agent; there is a requirement for a safety flow rate of over ten meters； For airbag sampling, the main concerns are reactions and bag rupture; this sample should not contain any liquid hydrocarbon components ； For LPG sampling, we have always used gas bags. The sample taken from LPG is in gaseous form due to the limited amount sampled. However, due to pressure and temperature drops, the pressure inside the sampling bag may not be high at the time of sampling; but during transportation and while waiting for analysis, as the temperature returns to normal levels, overpressure can occur in the sampling bag. Yet this problem isn’t that serious either – the Clapeyron equation specifies an absolute temperature of 273 degrees, so actual temperature changes of twenty or thirty degrees don’t have a significant impact on the pressure inside the sampling bag. It’s sufficient not to fill the bag to capacity; allowing it to have a slight amount of pressure inside is fine.