Dear Researchers,
I trapped soil CO2 in NaOH and analyzed on Analtik jena N/C 3100, Instrument gave reading in mg/L. How can I calculate the CO2-C in mg/kg soil or in any other units etc.
I used 3ml of NaOH and 12 ml of UPDW (D.F= 5).
Thanks
You can use the density for all experiments to convert the data with NIST data.
It is indirect titration. Loss in NaOH is equivalent to the amount of CO2.
To make the calculation easy, first calculate "how many mg of CO2 can be traped in NaOH of a particular strength. Once you come across the results in grams, you can calculate the desired concentration from the sample taken.
Conc in mg/kg=
Results from NaOH*Kg/Sample wt
If you give me the strength of NaOH (concentration), I can explain it further.
Dear Nafees, I used 0.5 M NaOH (10 ml) to trap CO2 from scotch bottles (25 g soil oven dry basis), kindly give the detail calculation about:
CO2 (mgg-1d-1)= (sample reading - blank) then next.....??? dilution factor is 5,
- Badges
- Science topic
- Similar topics
- Geoscience
- Atmospheric Sciences
- Climate Science
- Climate Change