The study focused on the proximate, minerals and phytochemical analysis of the leaves, seeds, seed coats and peels of Irvingia gabonensis and Irvingia wombolu from Uli in Anambra State Nigeria. The minerals concentrations (Ca, Zn, Fe, Mg) were determined with atomic absorption spectrometer (AAS) while sodium was determined with flame photometer. The trend in mineral concentration was Mg > Na > Ca > Zn > Fe. Phytochemical analysis revealed the presence of alkaloids, flavonoids and saponins in both species. The proximate analysis showed that the carbohydrates contents in the leaves and seeds of I. wombolu were 51.7±1.3% and 57.6±0.31% respectively, while the moisture content of the peels was 34.0±0.20%. The results of this study showed that the leaves, seeds, seed coats and peels of the two Irvingia species are potential sources of food nutrients and phytochemicals, and therefore should be maximally utilized.

The physico-chemical and metal analysis of five different borehole waters in Ovim Isuikwuato Local Government Area, Abia State were analysed to ascertain the quality of the water used in Ovim. Five different samples were collected from each borehole and a composite sample made. The parameters determined include

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The concentrations of polychlorinated biphenyls (PCBs) in sediment samples from the New Calabar River in the Niger Delta Region of Nigeria were determined. Grab sediment samples were collected from five stations in the river and analyzed for individual PCB congeners using gas chromatography - mass spectrometer. The Σ8PCB (sum of eight congeners) identified in the samples ranged from 0.21 to 2.16 mg/kg. Congener 105 and 194 were the most and least abundant with 34.65 % and 2.46 % respectively. The lower chlorinated congeners (below PCB 101) were prominent with 54.68 % of the total PCBs concentration in the sediments. The results of this study should make PCBs contaminants of grave concern in the Niger Delta Region.

Proximate and mineral compositions were carried out on the leaves, seeds and roots of moringa oleifera obtained from Okigwe, Nigeria. Mineral and proximate compositions were determined using their various methods of analysis. Results of proximate analysis in percentage showed moisture content in the following range; leaves 4.84, seeds 9.56 and roots 6.06, crude protein; leaves 24.94, seeds, 17.94 and roots 12.25, fat content; leaves 11.50, seeds, 12.60 and roots, 2.66 while mineral content still in percentage showed potassium in the roots 0.850, leaves 0.625, seeds 0.950 magnesium; roots 1.64, leaves 1.277 and seeds, 1.094 and calcium; roots 4.22, leaves 2.91 and seeds 2.61. These results showed that for proximate composition, the leaves had higher values followed by the roots and lastly by the seeds for most of the analysis while the mineral value contents showed higher percentages in the roots and the leaves. Even though all the various parts of Moringa oleifera are nutritionally valuable the leaves and roots are highly recommended for their higher nutritional values.