If there is, I would be extremely grateful to have some references. Thank you.
The simplest is oxidation using excess dichromate and either photometric measurement of Cr(III) ot titrimetric measurement of the excess, but the residual chromate is an environmental hazard.
he most common method used to estimate the amount of organic matter present in a soil sample is by measuring the weight lost by an oven-dried (105°C) soil sample when it is heated to 400°C; this is known as 'loss on ignition', essentially the organic matter is burnt off.Suspend the alginic ácid in water and add some sodium source, as sodium carbonate solution until you get pH 7. Then precipitate the sodium alginate with one equal part of alcohol. The product obtained showld be pure alginate. You can dry the fibers and then measure the viscosity and gel strenghtrganic matter makes up just 2–10% of most soil's mass and has an important role in the physical, chemical and biological function of agricultural soils.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjxj-bLgMj4AhXxn2MGHfMzBvIQFnoECAYQAQ&url=https%3A%2F%2Fcivilblog.org%2F2015%2F12%2F03%2Fhow-to-determine-organic-matter-content-in-soil%2F&usg=AOvVaw31KiZ8q1twwolDw4LbMSDt
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjxj-bLgMj4AhXxn2MGHfMzBvIQFnoECDUQAQ&url=https%3A%2F%2Fnaldc.nal.usda.gov%2Fdownload%2FIND43967366%2FPDF&usg=AOvVaw0lqILhzbrtHry9QIMex084
@ Wati, I think wet oxidation method by Walkley & Black is the simplest method for organic matter determination in the soil.
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