We are trying to start a pot experiment to study the effects of biochar on GHG emission (CO2, CH4 and N2O). Any laboratory scale equipments available to measure them repeatedly over time?
Hi Farhad,
For methane monitoring go to: http://www.environmental-expert.com/monitoring-testing/methane-monitoring/products
For carbon dioxide monitoring go to: http://www.environmental-expert.com/air-climate/carbon-dioxide-monoxide/products/keyword-carbon-dioxide-monitoring-11366
For Nitrous oxide monitoring go to: http://hci.iwr.uni-heidelberg.de/publications/dip/2006/Gomes_ApplPhysB2006.pdf
Success,
Frank
Dear Frank Hi
Thank you for your excellent references. It was indeed very useful.
All the best
Farhad
Hi Farhad,
We recently published a paper in Soil Biology and Biochemistry about the emission of the three greenhouse gases (i.e. CH4, CO2, N2O) from soil macroaggregates obtained in a field experiment where different tillage and N fertilization treatments were compared.
We used a gas chromatography system with three valves and a FID+methanizer and ECD detectors to quantify all the gases for each sample injection. We preferred gas chromatography due to its precision. We stored the gas samples in vials although the system could also be automated.
I hope you find it useful,
Daniel
http://www.sciencedirect.com/science/article/pii/S0038071713003702
Hi Daniel
Thank you for your excellent answer and guidance, as well as the very useful article.
all the best
While sensors matter, a critical aspect of any measurement of GHG flux from soils (whether in the lab or field) is pressure equilibration. Use of gas syringes in small volume systems is generally problematic - commonly drawing gases from soil pores and thus overestimating the steady-sate flux. The potential for such artifacts suggests that high-quality measurements should be based on a cuvette system that maintains a constant pressure, and preferably should involve real-time measurements based on an IRGA (for CO2) or other methods based on spectroscopy (cavity ring-down spectroscopy or modifications thereof) for methane. N2O remains a measurement problem and is usually handled by GC measurements of syringe samples, but there are now some expensive systems out there.
I need information regarding the machines which directly measure green house gases in field
can anybody suggest few
Am not an expert but share in the need for la robust kit to measure the three key GHG, and where would I purchase the Kit??
Dear Farhad, could you share how you did under pot experiments in a greenhouse or laboratory? I’m also looking a cheap and convenient method. Support from others is highly appreciated.
Dear Dhakal, unfortunately due to lack of funds, my student terminated that project and worked on biochar in Cu contaminated soils. Thanks for your interest. Best wishes
- Badges
- Science topic
- Similar topics
- Geoscience
- Atmospheric Sciences
- Climate Science
- Climate Change