<p>This work aimed to contribute to a cadmium screening in soils and cacao beans from the main plantation sites in Venezuela by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) analysis. Among them are Miranda, Sucre, Mérida–Zulia, and Barinas states, where cadmium levels fluctuated significantly. Despite the reduced number of samples and high intra-zonal variability, the soil Cd concentration in the plantations averaged 0.22 µg g<sup>−1</sup>, lower than the recommended maximum for agricultural soils (0.43 µg g<sup>−1</sup>). Cacao beans averaged 1.85 µg g<sup>−1</sup>, well above the upper limit recommended by the European Cocoa Association (0.6 µg g<sup>−1</sup>). The highest values were recorded for Miranda plantations. Soils from the plantations in Sucre, Mérida–Zulia, and Barinas have Cd concentrations below the detection limit of the ICP-OES method applied (0.035 µg g<sup>−1</sup>). A significant correlation was detected between the total Cd content of soil and the concentration of Cd in cacao beans.</p>

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Cadmium Screening in Soils and Cacao Beans from the Main Plantation Sites in Venezuela

  • Eunice Marcano,
  • Dioni Arrieche,
  • Fátima Rodríguez-Ramos

摘要

This work aimed to contribute to a cadmium screening in soils and cacao beans from the main plantation sites in Venezuela by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) analysis. Among them are Miranda, Sucre, Mérida–Zulia, and Barinas states, where cadmium levels fluctuated significantly. Despite the reduced number of samples and high intra-zonal variability, the soil Cd concentration in the plantations averaged 0.22 µg g−1, lower than the recommended maximum for agricultural soils (0.43 µg g−1). Cacao beans averaged 1.85 µg g−1, well above the upper limit recommended by the European Cocoa Association (0.6 µg g−1). The highest values were recorded for Miranda plantations. Soils from the plantations in Sucre, Mérida–Zulia, and Barinas have Cd concentrations below the detection limit of the ICP-OES method applied (0.035 µg g−1). A significant correlation was detected between the total Cd content of soil and the concentration of Cd in cacao beans.