Abstract Title: Assessment of BTEX Levels and Health Risks in Ambient Air of Shadipur, Delhi

Abstract Submitted to: ATMOSPHERIC SCIENCES

Abstract Text:

This study examines the presence of BTEX pollutants (benzene, toluene, ethylbenzene, and xylene) in the urban air of Shadipur, New Delhi, during summer and post-monsoon seasons in 2022. Among the BTEX compounds, toluene and benzene recorded the highest median concentrations. While BTEX levels exhibited no distinct diurnal pattern, a statistically significant seasonal trend indicated variations in wind conditions and temperature. Bivariate and multivariate analyses revealed positive correlations among toluene, xylene, and ethylbenzene, suggesting common sources, while benzene showed a separate origin. A meteorological analysis identified air mass influence on BTEX concentrations. Health risk assessments indicated no non-cancer risk for BTEX exposure. However, benzene exposure exceeded recommended threshold values for both adults and children, raising health concerns, particularly during the post-monsoon season. These results emphasize the importance of continuous BTEX monitoring and targeted measures to control benzene emissions in urban areas. By addressing air pollution sources, policymakers can safeguard public health and improve air quality in Shadipur and other urban locations facing similar challenges.