Open Access Research Paper Views (1012) Haemoglobin Oxidation: A possible mechanism of crude oil toxicity in fish B. A. Ezeawgula , H. A. Onwubiko Int. J. Biosci. 9(1), 25-33, July 2016. DOI: http://dx.doi.org/10.12692/ijb/9.1.25-33 Keywords: Crude oil contamination, Freshwater fish, Haemoglobin oxidation, UV-visible spectrophotometer Details