Determination of Zn (II) in Food Stuffs Using (DADHP) Reagent: A spectrophotometric method for determining zinc concentration in various food stuffs using DADHP reagent. Journal of Advances and Scholarly Researches in Allied Education, [S. l.], v. 16, n. 1, p. 320–322, 2019. Disponível em: https://ignited.in/index.php/jasrae/article/view/9498.. Acesso em: 3 aug. 2025.