Humic acid; humic acid in dry powdered form; sulfonated humic acid; sulfonated humic acid salt; sulfonated humic acid sodium salt; sulfonated humic acid sodium salt in dry powdered form; mixtures of sulfonated humic acid and sulfonated fulvic acids; phenolic aromatic hydrocarbons; compounds of humic and fulvic acids; compounds of sulfonated humic and sulfonated fulvic acids