Trace metal toxicity in some food items in three major markets in Ado-Odo/Ota LGA, Ogun State, Nigeria and associated health implications.

Background: Many of the markets in Nigeria are open, where foodstuffs are laid bare on flat trays and open baskets, directly exposing them to environmental contaminants. This study aimed at determining whether some food items on sale around an industrialized area of Ogun State are contaminated with trace metals.

Methods: Seven different food items - (roasted, fresh and smoked) (dried and fresh beef), zobo leaf (Hibiscus sabdariffa) and crayfish () were sampled from three major markets, namely: Lusada, Atan and Ota in Ado-Odo/Ota LGA of Ogun State.

Determination of selected heavy metal and analysis of proximate composition in some fish species from Ogun River, Southwestern Nigeria.

The aquatic environment is continuously at the mercy of man's negative impact on it. This study was designed to determine the proximate composition and concentration of some heavy metals in four fish species - in Ogun River, Nigeria. The fish species were collected from the Abeokuta axis of the river and analyzed for Manganese (Mn), Lead (Pb), Nickel (Ni), Cadmium (Cd) and Zinc (Zn) using atomic absorption spectrometry.