Ukpe DR. Variation of the concentrations of some heavy metal ions in fish and shrimps samples from Urua Otor Market in Ikot Ekpene LGA of Akwa Ibom State, Nigeria. JDDR [Internet]. 2024 Jan. 22 [cited 2024 Dec. 4];2(1):1-5. Available from: https://ddrg.net/index.php/ddrg/article/view/43