Nitrite in Nature: Determination with PolymericMaterials. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 19, n. 2, p. 104 – 114, 2018. DOI: 10.21743/pjaec/2018.12.11. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/182. Acesso em: 4 jul. 2025.