10.2190/ES.32.1.d 7862X256762P12HP 4 Hydrocarbon and Heavy Metal Pollution of Water and Sediments of Cross River and Akwa Ibom Coastal Waters, Nigeria 27 36 20101129 20101129 20101129 20101129 7862X256762P12HP.pdf http://baywood.metapress.com/link.asp?target=contribution&id=7862X256762P12HP 1 Flora E. Olaifa University of Ibadan, Nigeria A study was undertaken to determine the total hydrocarbon (THC) and heavy metal contents of water (surface: 0-15 cm and bottom: 2-13 m), sediments (intertidal and waterbed) in coastal areas of Cross River and Akwa Ibom States of Nigeria affected by a major oil spill in 1998. Water and sediment samples were collected in the dry (March and December) and wet (July and October) seasons between 1999 and 2002. Significant spatial variation (<i>p</i> < 0.05) was observed for THC and heavy metals. THC (mg/L) averaged 0.998 for surface and 0.827 for bottom water. 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