Amayi , James, Lusweti Kituyi, Charles Onindo, and Sherry Oluchina. 2018. “ Chemical Speciation, Stability and Toxicity of Sulphate and Phosphate Salts of Copper ”. African Journal of Education,Science and Technology (AJEST) 4 (3):Pg 61-70. https://ajest.org/index.php/ajest/article/view/148.