The study of the mechanism of action between pesticides and humic acid has shown that the results obtained from different angles and using different technical means are not quite the same, but all indicate that humic acid has a high potential adsorption capacity for pesticides. The specific research conclusions are:
(1) There are ionic bonds and hydrogen bonds between triazine and humic acid; humic acid will strongly adsorb the pesticide 2.4.5-T from the solution.
(2) The study of the adsorption and desorption of the herbicide trifluralin and soil humic acid shows that the properties of humic acid are the key factor.
(3) The regularity of humic acid adsorption of simazine shows that the adsorption performance of soil, lignite, oxidized lignite humic acid and peat and peat humic acid salts is the same, humic acid is better than humic acid salts, soil humic acid salts have the highest capacity, and peat humic acid salts have the lowest adsorption capacity. For simazine in the reaction process, proton transfer, laser degree and hydrogen bond formation are equally important.
(4) A stronger electron transfer reaction occurs in the reaction between s-triazine and humic acid. Therefore, it is believed that the complexation between s-triazine and humic acid, the high acidic functional group content of humic acid and the low alkalinity of s-triazine are beneficial to the proton transfer reaction, and vice versa.