The fulvic acid or humic acid is the body, in which some proper lipophilic group or hydrophilic group has been inducted, of the series of humate surfactants .

• 该系列表面活性剂是以黄腐植酸盐或黑腐植酸盐为主体，在主体分子结构中引入了适当亲油基或亲水基而制成的。