Resumo

SALAS-RAMIREZ, Ricardo Ivan et al. PWC modeling due to the presence of organochlorine pesticides in Ampampilco and Apatlaco canals, Xochimilco. Ing. invest. y tecnol. [online]. 2024, vol.25, n.4, e2119.  Epub 08-Abr-2025. ISSN 2594-0732.  https://doi.org/10.22201/fi.25940732e.2024.25.4.032.

Even though the use and application of most organochlorine pesticides have been prohibited in Mexico, they continue to be used in several cultivation areas, such as the Chinampera area of Xochimilco, specifically in the Apatlaco and Ampampilco canals. Consequently, this study reports the data collected from these canals and compares it to PWC modeling and international standards. The program estimates the concentrations that should be found in these canals if the pesticides were applied according to recommendations. The aim of this paper is to explain the situation in the study area by comparing the calculated theoretical concentrations of each organochlorine pesticide, as derived from the Pesticide in Water Calculator (PWC), with those detected in water and surface soil, considering international regulations. Results indicate that the concentrations of aldrin and dieldrin exceed CCME limits, but not EPA limits. For the EC, dieldrin is within acceptable limits, while aldrin exceeds them. Therefore, careful control and monitoring of these pesticides is essential. Endosulfan exceeds all three international standards (CCME, EPA, and EC), as it presents high levels in the calculations made with PWC.

Palavras-chave : Water; canals; organochlorines; pesticides; PWC; Xochimilco.

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