Zeitschrift für Umweltverschmutzung

Chlordecone's Long-Term Contamination of Tropical Volcanic Soils

Abstract

Jianzhou Yang*

This led to the long-term poisoning of soils, waterways, aquatic biota, and crops. A leaching model based on first-order desorption kinetics called WISORCH was created and tested to evaluate the extent and duration of pollution according to soil type. Soil organic carbon content (SOC) and the SOC/water partitioning coefficient serve as its input parameters (Koc). It takes into account the concentrations of drainage water and chlordecone in the soil today. The fact that the model held true for andosol suggests that neither physico-chemical nor microbiological degradation took place. Soil scraping is unrealistic because of dilution from earlier deep tillages. The main method for reducing pollution seemed to be lixiviation. Along with an increase in SOC content and rainfall, Koc went from nitisol to ferralsol and then increased again.