Deuterium exchange analysis experimental planning

The future direction of the experiment using the ring down cavity spectroscopy device will be planned here. This should be a fun collaboration between Scott Jasechko (Earth and Planetary Sciences) and myself (Physics). Join the conversation!

 

  • http://www.iheartanthony.com Anthony Salvagno

    This section of the thread is from an email conversation between Scott and myself.

    • http://www.iheartanthony.com Anthony Salvagno

      From me: As a follow up, it might be worth testing a couple more so we can get an
      understanding of how the machine operates under limited quantities. For
      instance, I can give you a sample of freshly opened deuterium depleted
      water, and maybe you can open one of the bottles that I gave you
      overnight and run that tomorrow, and also compare that with a diluted
      sample of the D2O I gave you? Is this doable? I guess I would just like
      to get a view of relative amounts of deuterium and try to distinguish
      some samples.

      • http://www.iheartanthony.com Anthony Salvagno

        From Scott: Sure. I’ve opened a bottle and left it in the lab. I will also start measuring the atmospheric vapour in the room so me have an idea of the isotope composition of the room’s vapour is.

        • http://www.iheartanthony.com Anthony Salvagno

          From Scott: I’ve
          returned to campus, and I checked on the exposed sample. It hasn’t
          evaporated much yet, but I will take a sample at the 24 hr mark
          regardless. I am in tomorrow too, so I will take another then to assess
          changes over time. I’ve also got a few other unnatural waters in the
          room, and I’ve always water to try this as an experiment anyway: all the
          samples should trend to a common value as they evaporate. The value
          depends on temperature, humidity and the isotope composition of the
          atmosphere. We’ll see on Monday if this is the case.

  • http://www.iheartanthony.com Anthony Salvagno

     From me: As a follow up, it might be worth testing a couple more so we can get an
    understanding of how the machine operates under limited quantities. For
    instance, I can give you a sample of freshly opened deuterium depleted
    water, and maybe you can open one of the bottles that I gave you
    overnight and run that tomorrow, and also compare that with a diluted
    sample of the D2O I gave you? Is this doable? I guess I would just like
    to get a view of relative amounts of deuterium and try to distinguish
    some samples.

    • http://www.iheartanthony.com Anthony Salvagno

      Sure. I’ve opened a bottle and left it in the lab. I will also start measuring the atmospheric vapour in the room so me have an idea of the isotope composition of the room’s vapour is.

  • http://www.iheartanthony.com Anthony Salvagno

    From Scott: Sure.
    I’ve opened a bottle and left it in the lab. I will also start
    measuring the atmospheric vapour in the room so me have an idea of the
    isotope composition of the room’s vapour is.

  • http://www.iheartanthony.com Anthony Salvagno

     From Scott: Sure.
     I’ve opened a bottle and left it in the lab. I will also start
    measuring the atmospheric vapour in the room so me have an idea of the
    isotope composition of the room’s vapour is.

  • http://www.iheartanthony.com Anthony Salvagno

     From Scott: I’ve
    returned to campus, and I checked on the exposed sample. It hasn’t
    evaporated much yet, but I will take a sample at the 24 hr mark
    regardless. I am in tomorrow too, so I will take another then to assess
    changes over time. I’ve also got a few other unnatural waters in the
    room, and I’ve always water to try this as an experiment anyway: all the
    samples should trend to a common value as they evaporate. The value
    depends on temperature, humidity and the isotope composition of the
    atmosphere. We’ll see on Monday if this is the case.