ABSTRACT
I. Introduction 651 II. Major Colloids and Organic Contaminants in Soils and Sediments 652
A. Colloids 652 B. Organic compounds 653
III. Slow Sorption Processes in Soils and Sediments A. Mechanisms o f slow sorption o f organic chemicals to natural
particles 654 B. Modeling slow sorption o f organic chemicals to natural particles 655 C. Experimental and model results 665
IV. Formation of Sorption Hysteresis 674 A. Mechanisms of the formation o f sorption hysteresis 674 B. Experimental and model results 675
V. Multicomponent Sorption 677 A. Organic contaminants 677 B. Organic contaminants and surfactants 679 C. Organic contaminants and emulsions 694
VI. Conclusions 695 Nomenclature 696 References 697
I. INTRODUCTION
Hydrophobic organic compounds (HOCs) deposited on soils and sediments play an important role in ecosystem contamination. They result from incineration or combustion processes and from pesticide and detergent deposition and the degradation of the latter.
