Environmental Soil Chemistry

TLDR: In this article, an overview of the evolution of Soil Chemistry is presented, with a case study of Pollution of Soils and Waters and a discussion of the role of organic compounds in soil chemistry.

Abstract: Environmental Soil Chemistry: An Overview: Evolution of Soil Chemistry. The Modern Environmental Movement. Contaminants in Waters and Soils. Case Study of Pollution of Soils and Waters. Soil Decontamination. Inorganic Soil Components: Pauling's Rules. Primary Soil Minerals. Secondary Soil Minerals. Specific Surface of Soil Minerals. Surface Charge of Soil Minerals. Identification of Minerals by X-Ray Diffraction Analyses. Use of Clay Minerals to Retain Organic Contaminants. Chemistry of Soil Organic Matter: Effects of Soil Formation Factors on SOM Contents. Composition of SOM. Fractionation of SOM. SOM Structure. Functional Groups and Charge Characteristics. Humic Substance-Metal Interactions. SOM-Clay Complexes. Retention of Pesticides and Other Organic Substances by Humic Substances. Soil Solution-Solid Phase Equilibria: Measurement of the Soil Solution. Speciation of the Soil Solution. Ion Activity and Activity Coefficients. Dissolution and Solubility Processes. Sorption Phenomena on Soils: Introduction and Terminology. Surface Functional Groups. Surface Complexes. Adsorption Isotherms. Equilibrium-Based Adsorption Models. Surface Precipitation. Sorption of Metal Cations. Sorption of Anions. Points of Zero Charge. Desorption. Use of Spectroscopic and Microscopic Methods in Determining Mechanisms for Sorption-Desorption Phenomena. Ion Exchange Processes: Characteristics of Ion Exchange. Cation Exchange Equilibrium Constants and Selectivity Coefficients. Thermodynamics of Ion Exchange. Relationship between Thermodynamics and Kinetics of Ion Exchange. Kinetics of Soil Chemical Processes: Rate-Limiting Steps and Time Scales of Soil Chemical Reactions. Rate Laws. Determination of Reacti