Assessment of Composition of Selected Heavy Metals in Road Dust from Sangareddy Region

Abstract Road dust is recognized as a significant reservoir of heavy metals originating from vehicular emissions, industrial activities, and urban development. This study focuses on the assessment of the composition and concentration of selected heavy metals in road dust collected from the Sangareddy region. Representative samples were systematically collected from high-traffic, commercial, and residential areas to evaluate spatial variations in contamination levels. The collected samples were processed and analyzed using standard analytical techniques to determine the concentrations of heavy metals such as lead (Pb), cadmium (Cd), chromium (Cr), nickel (Ni), zinc (Zn), and copper (Cu). The results revealed considerable variation in metal concentrations across different locations, with higher levels observed in areas experiencing dense traffic and industrial influence. Comparative analysis with permissible limits indicated that certain metals exceeded recommended thresholds, suggesting potential environmental and health risks. Statistical analysis and contamination indices were employed to identify possible sources and the degree of pollution. The findings indicate that vehicular emissions, wear and tear of automobile components, and anthropogenic activities are the primary contributors to heavy metal accumulation in road dust. This study highlights the need for regular monitoring and effective pollution control strategies to mitigate heavy metal contamination in urban environments, thereby reducing associated ecological and human health risks.