Potencial contaminación en aguas superficiales: : un estudio en la cuenca del río Alto Ivaí
In Brazil, CONAMA Resolution No. 357/2005 divides surface water into classes, according to its use and required quality. This resolution provides that watercourses must be analyzed and monitored in case of suspected contamination by pesticides. This study aimed to analyze the potential for contamina...
Guardado en:
| Autores principales: | , , , , |
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| Formato: | Online |
| Lenguaje: | spa |
| Publicado: |
Instituto de Cartografía, Investigación y Formación para el Ordenamiento Territorial. CIFOT.
2023
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| Materias: | |
| Acceso en línea: | https://revistas.uncu.edu.ar/ojs3/index.php/proyeccion/article/view/7080 |
| Sumario: | In Brazil, CONAMA Resolution No. 357/2005 divides surface water into classes, according to its use and required quality. This resolution provides that watercourses must be analyzed and monitored in case of suspected contamination by pesticides. This study aimed to analyze the potential for contamination of surface water by pesticides in the Alto Ivaí water basin (AIWB). The qualitative evaluation used to determine the contamination potential used the criteria proposed by Goss (1992), which takes into account the following characteristics of pesticides: coefficient of adsorption to organic matter (Koc), half-life in soil (DT50), and solubility in water at 20°C. The results showed that the cultivation areas that receive applications of paraquat, atrazine, diuron, lambda-cyhalothrin, imidacloprid, thiamethoxam, prothioconazole, and azoxystrobin are more vulnerable to contamination within the Alto Ivaí Watershed, due to the high potential for transporting these active principles, associated with sediments or dissolved in water. It is concluded that, in view of the use of these active principles in various cultures in the Alto Ivaí basin area, it is paramount to implement collection and monitoring points to guarantee the quality of the water within the standards required by current legislation. |
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