Abata, Emmanuel Orimisan, Oluwasanmi Damilola Ogunkalu, Adewale Abdulahi Adeoba, and Olugbenga Oludayo Oluwasina. “Evaluation of the Heavy Metals in Tonic Creams Using the Wet Acid and Dry Ashing Methods ”. Earthline Journal of Chemical Sciences 1, no. 1 (January 30, 2019): 37-43. Accessed June 30, 2025. https://www.earthlinepublishers.com/index.php/ejcs/article/view/131.