Abstract
The Atoyac River that crosses Puebla-Tlaxcala in Mexico shows a severe state of contamination, however, this situation has been scarcely studied. The objective of this work was to evaluate the pollutants in the Atoyac River (physicochemical parameters, heavy metals and volatile solvents) in three areas that comprise the state of Puebla and Tlaxcala from samples collected in August 2019. The study areas were San Cristóbal Tepetlaxco Puebla (Zone 1), San Martín Texmelucan Puebla (Zone 2) and Villa Alta Tlaxcala (Zone 3). The results of the determination of the physicochemical parameters (Temperature, pH, Conductivity, Turbidity, COD, BOD5 and DO), heavy metals and volatile organic solvents reveal that Zone 1 represents the least contaminated area while Zone 3 has a critical contamination due to the presence of physicochemical values and concentrations of heavy metals and organic solvents that exceed the limits allowed by the Official Mexican Standards. Therefore, our results suggest that the Atoyac River is affected in a heterogeneous way. Observing the increase in pollution dramatically and progressively. Hence, it is urgent to generate information that serves as evidence to make recommendations to curb excessive industrial and municipal pollution, which can cause problems for the environment and health of the population.
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