Seasonal Variation in Petroleum Hydrocarbon Concentrations in Surface Water, Sediment, Crab (Callinectes sapidus), and Periwinkle (Tympanotonus fuscatus) from the New Calabar River, Nigeria. IAUE-JACS. 2026;1(1):26-37. Accessed October 27, 2026. https://iauejournals.com/index.php/JACS/article/view/138