Sorbed pesticides, abiotic

The only available evidence in the literature which relates, though indirectly, to hydrolysis of sorbed pesticides concerns pesticides in soil systems (see for example 14, 15). Though the results of such studies are not directly applicable to aquatic systems, they do, in general, show that certain pesticides undergo abiotic reactions in soil-sorbed states. 

MACALADY AND WOLFE Abiotic Hydrolysis of Sorbed Pesticides... 

Abiotic hydrolysis, sorbed pesticides, 221-43 Acetanilide herbicide, groundwater contamination, 299 Acid-catalyzed hydrolysis aldlcarb by RIEX, 257f kinetics, disappearance rate, 223 Acid hydrolysis, sorbed pesticides, 242... 

Coleman, K. D. 1988. Acid Catalyzed Abiotic Hydrolysis of Sorbed Pesticides, M.S. Thesis, Colorado School of Mines. 

Macalady, D. L., and N. L. Wolfe. 1984. Abiotic hydrolysis of sorbed pesticides, in ACS Symposium Series, No. 259 Treatment Disposal of Pesticide Wastes, Krueger, R. F., and J. N. Seiber, Eds., (Washington, DC American Chemical Society), pp. 221-244. 

Chemical, or abiotic, transformations are an important fate of many pesticides. Such transformations are ubiquitous, occurring in either aqueous solution or sorbed to surfaces. Rates can vary dramatically depending on the reaction mechanism, chemical stmcture, and relative concentrations of such catalysts as protons, hydroxyl ions, transition metals, and clay particles. Chemical transformations can be genetically classified as hydrolytic, photolytic, or redox reactions (transfer of electrons). 

It is the purpose of this article to summarize the present status of our understanding of the factors governing the rates of hydrolysis of pesticides which are sorbed to sediments. The work reported herein deals specifically with abiotic hydrolysis reactions, which for some pesticides, may be as important or more important than biologically mediated hydrolysis reactions (], . ... 

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