https://en.wikipedia.org/wiki/Fulvic_acid
Humic substance - Wikipedia
humic substancewikipedia
https://www.mdpi.com/2071-1050/15/7/5921
The Impact of Profile Genesis and Land Use of Histosol on Its Organic Substance Stability and Humic...
This study is designed to evaluate soil organic matter (SOM) quality indicators: molecular indicators of dissolved organic matter (DOM) and hydrophobicity of...