Jesus Maguey

Humic acids (HA) are a principal component of humic substances in organic constituents of soil, compost and coal; however, HA are also an important organic component in streams, lakes, and oceans (Lehmann and Kleber, 2015). Humic acids are produced by biodegradation of organic matter, hence they are a complex mixture of many different acids containing carboxyl and phenolate groups (Pandey et al., ...