Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

TGA/DSC measurements

  1. Jul 29, 2010 #1
    I want to calculate the rate of weight loss and not sure should I keep the initial mass at the initial time always or should I use the previous mass of recorded data

    should be m0 as inital value always or is should change to m3-m2, m4-m3, in this way.

    I plotted the graph and it does not have a similar shape so i have to make a choice but I am confuse.

    I look forward to your advise. Thank you!
     
  2. jcsd
  3. Jul 29, 2010 #2
    It depends on what you want. Do you want to see, on your graph, the weight that is lost each second, or the weight that have been lost since the beginning of the run?

    TP
     
  4. Jul 29, 2010 #3

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    It is usually the instantaneous rate of mass loss (dm/dt) that is the useful quantity, and therefore the slope of the mass curve is what one typically uses.
     
  5. Jun 20, 2011 #4
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook