Evaluación De Los Niveles De Cadmio En Cultivos De Arroz A Nivel De Suelo Y Grano, Ubicados En La Vereda Canaguaro Del Municipio De Granada Meta.

Abstract

The contamination in the soil by heavy metals is one of the problems that represents a great risk at an environmental, economic and social level, its importance lies in the negative impacts it can produce on natural ecosystems and on health. In relation to this environmental problem, the interest in this research is created to evaluate the presence of cadmium (Cd) in a rice crop at ground level, before and after planting, and in the harvested grain, in an area located in the Canaguaro village, Granada municipality - Meta- Colombia. Soil and paddy rice samples were obtained in the field. Subsequently, they were sent to an ICA-accredited laboratory for analysis, using the ICP-OES technique; This technique was selected because it is one of the most robust and versatile, allowing the detection and quantification of metallic impurities in a specific way and at the required levels. From this it is found that the soil has cadmium concentrations that are within the range of 0.01-2 mg / kg, values normal for soils according to the US EPA. On the other hand, it is found that the cadmium concentrations in paddy rice exceeded the levels established by the FAO of 0,4 mg / kg. In the leaf tissue, concentrations of 10,4 and 38,8 mg / kg of cadmium are found in paddy rice, data that were obtained in the farms under study. Lastly, phytoremediation measures are recommended to minimize the concentrations of cadmium at ground level and paddy rice, in order to guarantee the safety of rice, human health and the environment.