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STRUCTURE AND ORIGIN OF HUMIC ACIDS AND THEIR RELATIONSHIP TO KEROGEN, BITUMEN, PETROLEUM AND COAL | Humic Acid
https://humicacid.wordpress.com/structure-and-origin-of-humic-acids-and-their-relationship-to-kerogen-bitumen-petroleum-and-coal
STRUCTURE AND ORIGIN OF HUMIC ACIDS AND THEIR RELATIONSHIP TO KEROGEN, BITUMEN, PETROLEUM AND COAL. Humic acids are precursors of petroleum and coal, produce fertile soils, interfere with industrial processes, and form carcinogens in drinking water. They were isolated more than two centuries ago, yet their structure and origin has always been disputed. In this study, humic acids were rigorously purified to study them. Diols, ethers, anhydrides, methyls, methylenes (long and short chain) and methines....