“Evaluation of Meteorological Variables and Their Influence on Air Quality at the La Oroya Metallurgical Complex in the District of La Oroya, Yauli Province, Junín, Peru”

Heidy Chirre-Flores J.; Robles-Calderón R.; Díaz-Ruiz J.; Chino-De-laCruz I.; Eliana Cervantes-Peralta M. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2026) · DOI: 10.18687/laccei2026.1.1.1290

Resumen

This research project aims to evaluate environmental air quality parameters and analyze the influence of meteorological variables within the district of La Oroya, Yauli Province, Junín Department, Peru, during April 2025. The analysis of air quality parameters, particularly sulfur dioxide (SO2) together with environmental monitoring, constitutes essential and fundamental tools for assessing environmental impacts and implementing environmental management measures related to air pollution processes. Objectives: One of the main objectives of this study is to analyze the SO2 parameter and determine the influence of meteorological variables on the concentration and dispersion of SO2 in the environment of Junín, in order to establish preventive measures against pollution. Methods: The methodology applied consisted of data analysis and collection from the database of the Environmental Surveillance Center of the OEFA - La Oroya Metallurgical Complex, focusing on SO2 parameters and meteorological variables. Results: The 24-hour concentrations of sulfur dioxide (SO2) recorded in April 2025 exceeded the reference Air Quality Standard (ECA) value of 250 µg/m3 (Supreme Decree No. 003-2017-MINAM) on one occasion. Likewise, the air quality standard for sulfur dioxide of 250 µg/m3 (Supreme Decree No. 003-2017-PCM) was exceeded. The maximum 24-hour SO2 concentration was 255.3 µg/m3 recorded on April 26, 2025. Conclusions: During the monitoring period of April 2025 at the environmental monitoring station CA-CC-01, wind direction showed a predominance from the west (W) with a monthly frequency of 23.3%, followed by west-southwest (WSW) winds with 14.6%.

Instituciones: Universidad Nacional Mayor de San Marcos; Universidad Nacional de Ingeniería; Universidad Privada del Norte