Soil Contamination Due to Heavy Metals at Electronic Waste Dumpsites in Karachi, Pakistan. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 21, n. 2, p. 332 – 341, 2020. DOI: 10.21743/pjaec/2020.12.35. Disponível em: http://pjaec.pk/index.php/pjaec/article/view/151. Acesso em: 12 jul. 2025.