Aziz Ur Rahman, Owais Iqbal Khan, and Ambreen Aziz , trans. “An Investigation Study on PM2.5 in Ambient Air: A CaseStudy of Karachi, Pakistan”. Pakistan Journal of Analytical & Environmental Chemistry 25, no. 2 (December 11, 2024): 232 – 242. Accessed July 4, 2025. https://pjaec.pk/index.php/pjaec/article/view/94.