Determine the purity of hydrogen and the components of impurities
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I am looking for a chromatography-mass spectrometry service that offers paid testing to determine the purity of hydrogen as well as the presence of any impurities. The purity of the hydrogen is expected to be above 95–99%, and the possible impurities include water vapor, boric acid, boranes, alcohols (isopropanol), and amines (isopropylamine, ammonia), among others. The ideal outcome is one that is comprehensive and highly accurate; long-term collaborative testing may be required, so a reasonable price is desired. If you are interested, please leave your contact information and quote in my email at 851906080@qq.com. Thank you!
For hydrogen with this purity range, chromatographic analysis is the most convenient method. However, the boric acid in actual samples is likely to be in solid form and should be removed before analysis. For other impurity components with high boiling points, they can be removed by adding adsorbents; since when testing the purity of hydrogen, its impurities should generally also be in gaseous form at room temperature.
On Baidu, it is said that \"boric acid volatilizes along with water vapor\" – do you mean this solid? But I will carry out low-temperature condensation treatment before the gas collection bag, reducing the gas dew point below 0 degrees; would this not also allow for the removal of the vast majority of boric acid? It ensures that the gases tested at room temperature are mostly in gaseous state. In that case, it would be desirable to conduct some liquid-phase analysis on the condensed water as well. But after all, if the temperature is lowered below the dew point, the components required by the equipment are substantial and its power consumption is high, which is not conducive to the development of portable products; therefore, air cooling is used. However, air cooling is highly affected by the environment; even at temperatures above 40 degrees Celsius, water vapor and boric acid will still escape. It would be good to have some relatively precise figures regarding the amount that escapes
You learned your analytical chemistry and other chemical knowledge on Baidu, right? If that’s the case, it’s better not to engage in professional chemical analysis work for now; instead, find some specialized books to study*.
Please read carefully the post I sent! I was originally looking for a professional to help develop a plan for testing and analyzing hydrogen impurities; searching on Baidu was merely a way to raise my own questions. If this is foolish, please forgive me! According to you, boric acid is a solid; then how can it be removed? How can the other components with high boiling points be removed? Will these adsorbents affect other gaseous impurities? Can the actual product achieve such an ideal state?
With an attitude like yours, it’s like a dog biting Lu Dongbin. I originally wanted to help you, but with this attitude of yours, go to hell.
Bro, did I scold you? Am I not asking you for advice?