ABSTRACT:The study deals with the seasonal distribution of nitrate (NO 3 ) and nitrite (NO 2 ) levels in Eleme Abattoir environment. Samples of soil, surface water and groundwater were collected from areas unaffected and those affected by abattoir activities. For the soils from the affected area and control points respectively, nitrate levels were 2.42 mg/l and 1.30 mg/l in wet season and 12.0 mg/l and 6.40 mg/l in dry season. The corresponding values for nitrates were <0.02mg/l and <0.02mg/l in wet season and 71.1mg/l and 62.5mg/l in dry season. Surface water samples showed nitrate composition of 0.99mg/l and 0.69mg/l in wet season and 0.44mg/l and 0.26mg/l in dry season in affected and unaffected areas, respectively. The respective concentrations of nitrates were <0.02mg/l and <0.02mg/l, and 0.70mg/l and 0.35mg/l. For the groundwater, nitrates during the dry and wet seasons were 0.28mg/l and 0.70mg/l whereas those of nitrates in both dry and wet seasons were 0.35mg/l and <0.02mg/l, respectively. In both seasons, the nitrate and nitrite levels in the surface and groundwater of the study area fall within the WHO levels, but in the dry season, unsafe levels prevail in the soil affected by abattoir activity. It is recommended that there should be periodic evaluation of nitrate and nitrite levels in the area. @ JASEM
Phytochemical analysis of the extracts from the leaves of the plant fleabane (Conyza sumatrensis) revealed the presence of some substances such as tannins, flavonoids, saponins, steroids and glycosides. The presence of these substances is an indicator of the pharmacological property as well as the nutritive value of the plant leaves. Antimicrobial tests showed that the leaves extract is not sensitive towards the bacteria Pseudomonas aureginosa, staphylococcus aureus, Bacillus spp and Escherichia coli, but inhibited the growth of the fungus Aspergilus niger. @ JASEM With the phenomenal growth in world population and the attendant depletion in food and drugs, mankind has to grapple with these problems by looking for alternative sources for these essentials of life.
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