Soil Chemical Quality Assessment of Some Land Uses In Imo State, Nigeria (Published)
This study was conducted in Imo State, Nigeria to assess the Chemical quantities of some land using soil management assessment framework (SMSF) techniques. Three land uses namely; the grass land, continuously croppedand forest land. Soil profile representations were established in each of the physiographic units and soil samples collected from the pedogenetic horizons for the analysis of some chemical properties. The chemical properties investigated were the soil pH.organiccarbon, total nitrogen, available phosphorus, the exchangeable cations of calcium, magnesium, potassium and sodium, cation exchange capacity and electrical conductivity. Analytical values obtained using the SMAF were combined into quantitative index based on the critical value of the soil properties. The results of this study showed that the grass land, continuously cropped and forest land were moderately acidic with mean pH values 5.43, 5.38, and 5.65. The organic matter contents were low in grass land and continuously cropped with mean values of 0.43 and 0.41 but moderate in the forest land with mean value of 0.82. Total K, available P and exchangeable K were low in grassland and continuously cropped with mean value of 0.96gkg-1, 0.85gkg-1 for N, 12.20mgkg-1, and 12.14mgkg-1 for P in grass land and continuously cropped respectively. The forest land had high sodium content with mean value of 0.74 and high electrical conductivity with a mean 4.91 dsm-1. The results revealed high chemical quality of forest land and low to moderate qualities of the grass land and continuously cropped.
Keywords: Assessment, Imo State, land use, soil chemical quality
Air Quality Index Assessment in Some Parts of Porthacourt Metropolis, Nigeria (Published)
The assessment determines the air quality status in some parts of Port Harcourt city and environs. The amount of air pollutants emitted into the environment are measured and described in relation to seasonal variations in the concentration levels of gases in the air sample with a view to assess the air quality status in Port Harcourt. Some industries within the study area include Pabod Breweries, plastcom in Transamadi axis, Fibow, dulfil in Choba axis, eleme Petrochemical in the oilmil/eliozu axis just mention but a few. Pollutants such as TSPM, SOx, CO and Pb in wet and dry seasons were measured in association with meteorological parameters. Air monitoring gadgets such as Kestrel 4500 Compound weather Tracker (for measurement of metrological parameters and Digit 970 hand- held gas analyser for measuring the gasses) were employed in the monitoring. The average wind speed within the dry season was 0.78m/s, while the average wind speed at wet season is 1.53m/s. Average temperature observed within the study area is 26.350C in wet season and 33.20C in dry season. From the analysis of the result gotten from data collation in this work, the measured concentration of TSPM was high at 95.83ug/m3 in the wet season while it1661 ug/m3 was in the dry season. For CO, Rumuomasi was the location with a high value of 4.57 ppm in the wet season while Oil mill with a value of 32.37 ppm was highest in dry season. Similarly, SO2 had a high value of 0.74 ppm in the wet season and 1.26 ppm in the dry season. Finally, Lead (Pb), had Oil mill as its hotspot with a value of 0.77 ppm in wet season and high around Trans Amadi area with a value of 0.91 ppm in the dry season. A detailed analysis of the result observed that a mean concentration of the gaseous pollutants was higher in the dry season than the wet season. They were found to have exceeded the permissible limits as given by the FMEnv, NAAQS and FEPA with dominant pollutants like Pb, and CO having hotspots in Trans-Amadi, Choba and Oil mil areas. The only area that had limited air pollutant exposures was at Air Port Juction, OMAGWA mapped as a control area for this assessment
Keywords: Air, Assessment, Meteorological, Season
Assessment of Pollution Status of Ikwette Stream at Obudu Cattle Ranch Bottom Hill, Cross River State Calabar Nigeria (Published)
The focus of this study is on the assessment of pollution status of Ikwette stream at Obudu cattle Ranch Bottom Hill. Water samples were collected three times in the months of August, September and October 2014. The samples were analogized for physic-chemical and bacteriological parameters. The results of the analyzed samples were compared with the World Health Organization Standard for drinking water (WHO) and (NDWOR).Nigeria Drinking Water Standard. Pollution index (PI) was used the ascertain the level of pollution of the stream. The result indicates that all the stream. The result indicates that all the parameters except chromium (PI of 1) fall with in class 1 indicating no pollution and slightly polluted for chromium which fall with in class 2.
Keywords: Assessment, Pollution, Status, and Stream