Reduction of Hexavalent Chromium Using L-Cysteine Capped Nickel Nanocatalysts. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 14, n. 1, p. 54 – 60, 2025. DOI: 10.21743/. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/364. Acesso em: 12 jul. 2025.