fulvic acid

https://doi.org/10.1351/goldbook.14703
Humic substance that is soluble at all \(\rm{pH}\)s.
Note: Most of the humic substance in natural water is fulvic acid.
Source:
PAC, 2009, 81, 829. (Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)) on page 889 [Terms] [Paper]