Pollution Research Paper

Vol 38, Issue 1, 2019; Page No.(91-101)

CONCENTRATION OF CADMIUM IN CACAO FIELDS AND ITS RELATIONSHIP WITH SOIL CHARACTERISTICS IN NORTHEAST COLOMBIA

WILMER S. SEPÚLVEDA, ALEXANDER SEPULVEDA-SEPULVEDA, JUAN ALMERIA AND MANUEL G. PABÓN

Abstract

Cadmium (Cd) is a heavy metal commonly found in agricultural soil that poses a high risk to the food chain. Around the world, maximum permissible levels for intervention in both soils and food products have been established. Cd behavior in Colombian cocoa fields is poorly documented while production of cocoa are crucial in Colombian economy. The aim of this study developed in Colombia was to analyze Cd contents in cocoa fields and its interactions with soil variables. Also, Cd reference level in soils dedicated to cocoa crops was proposed employing non-parametric statistical techniques. The information used was obtained from 187 cocoa farms located in the most important area of Colombia that produces cacao. Soil variables of the cocoa fields were measured and analyzed. It was found that: organic matter, phosphorus and zinc are highly associated with the presence of Cd in the soil. A value of 0.89 mg/kg (total Cd) is suggested as a background concentration.

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