Browsing by Author "Bodunde, Victoria Tosin"

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Assessment Of Heavy Metal Pollution Of Waste Dump Sites In Kwara State Using Carica Papaya, Musa Spp And Cocorhrous Olitorous As Indicators
    (International Organization of Scientific Research (IOSR), 2013-09) Bale, Adebayo Tajudeen; Ogundele, Damilola Temitope; Bodunde, Victoria Tosin
    Plant fruits and vegetables grown on mixed waste dumpsites were used as bio indicators of heavy metal pollution of three waste dumpsites in Ilorin Kwara State Nigeria. The samples were digested using Wet-oxidation method and heavy metals in the digest were analyzed by Atomic Absorption Spectrophotometer Technique. Carica Papaya, Musa Spp and Cocorhrous Olitorous samples were collected from contaminated and uncontaminated sites. Copper concentrations of carica- papaya, Musa spp, and cocorhrous olitorous from the contaminated sites were found between 0.15-0.23 mg/kg in Abayawo, 0.13 mg/kg in Okolowo, and 0.10 mg/kg in Itanmo. Zinc was found between 21.25-42.75mg/kg in Abayawo, 20.00 mg/kg in Okolowo, and 11.00 mg/kg in Itanmo. Pb and Cd were found below the detection limit of the instrument. Heavy metals in the uncontaminated site samples were found between 0.10-0.23 mg/kg Copper, 0.75-31.75 mg/kg Zinc. Cadmium and lead were found comparatively below detention limits in all the samples. Mean concentrations of metals were higher in Abayawo dumpsite than other dumpsites. The mean concentration of Cu 0.56 mg/kg and Zn 30.75mg/kg are well above the mean concentration of metals from the control site (Oloje) 0.15 mg/kg and 24.58 mg/kg Copper and Zinc respectively. Base on this study, the three waste dumpsites are polluted with heavy metals (Copper, Zinc), which can pose great health risk and hazards on food chain.
  • Thumbnail Image
    Item
    Effect of Organic Matter Removalon Sorption Studies of Phosphate by Selected Soils in Northern Part of Kwara State, Nigeria
    (Science domain international, 2014-01-15) Bale, Adebayo Tajudeen; Bodunde, Victoria Tosin; Ogundele, Damilola Tolulope
    The effect of organic matter removal and adsorbate solution composition on phosphate sorption by selected soil in Moro Local Government of Kwara State (Malete and Elemere) was studied. The organic matter was removed by treating the soil with hydrogen peroxide. This is referred to as the treated sample while the untreated samples were those to which hydrogen peroxide was not added. The adsorbate solution used was KH2PO4+KCl. The sorption study for maximum adsorption capacity was carried out with 1g of soil in 20ml phosphate solution at different concentration. The maximum adsorption capacities of treated and untreated Malete soil were observed to be 0.29mg/g and 0.23mg/g respectively while those of treated and untreated Elemere soil were observed to be 0.24mg/g and 0.14mg/g respectively. The phosphate sorption data were fitted to both Langmuir adsorption isotherm, the R2 values for the samples (Malete=0.870, Elemere=0.792) and Freundlich (Malete =0.013, Elemere=0.043). The adsorption data of Malete and Elemere soils were observed to fit Langmuir II adsorption isotherm.
  • Thumbnail Image
    Item
    Fatty Acid Composition and Physicochemical Properties of Castor ( Ricinus Communis L. ) Seed Obtained from Malete, Moro Local Government Area, Kwara State. Nigeria
    (International Institute of Science, Technology and Education, 2013) Bale, Adebayo Tajudeen; Adebayo, Rofiat Tosin; Ogundele, Damilola Tope; Bodunde, Victoria Tosin
    The oil of the Ricinus communis L. seed was extracted by soxhlet method using N-hexane.The physicochemical characteristics of the castor oil were evaluated. The results showed that the castor seeds contain a relatively high percentage of total lipids content ; 47.8 % , iodine value ( 1.061 g/g ) , and saponification value ( 327.4 g/g ). The seed oil moisture content , acid value , density and free fatty acid ( % FFA ) were 0.3 % , 14.42 mg/g , 880 g/cm3 and 7.21 % , respectively.