Dear Fazal,

for total organic matter use loss on ignition method, as pointed out here:

ASTM C 25 Standard test methods for chemical analysis of limestone, quicklime and hydrated lime

ASTM C 114 Standard test methods for chemical analysis of hydraulic cement

For total organic carbon, you normally use analytical methods like the LECO total carbon analyzer (e.g. LECO C-230)

Hope this helps,

Cheers,

Max

Please have a look at PDF attachments.

Probably the easiest method, which can be rather rough and ready is to use "loss-on-ignition" (LOI)... The attached links give an easy to follow summary of the method and some discussion... It is a fairly 'rough-and-ready' method, but it is quick and easy to process a large number of samples and requires little specialist equipment (just a balance and a furnace), so it depends how precise you want your data to be. I am an environmental archaeologist, and LOI is a fairly routine method applied to many soils and sediments I work with.

Hope this is useful.

https://www.sfu.ca/soils/lab_documents/Estimation_Of_Organic_Matter_By_LOI.pdf

http://onlinelibrary.wiley.com/doi/10.1111/ejss.12224/abstract