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Articles by L.M. Durosinmi
Total Records ( 3 ) for L.M. Durosinmi
  A.O. Ogunfowokan , M.K. Morakinyo , O.S. Agboola and L.M. Durosinmi
  Twenty and eighteen different brands of biscuit and sweet wrappers respectively from Nigeria were analysed for the first time for their levels of lead and cadmium in this study. Present results show that concentrations of lead were generally higher compared with cadmium for both sweet and biscuit wrappers. The mean concentrations of lead and cadmium in sweet wrappers varied between 1520.0 ± 0.11 and 2.40 ± 0.01 μg g-1 and between 1.64 ± 0.02 and 0.36 ± 0.01 μg g-1, respectively. The levels of lead and cadmium in biscuit wrappers ranged from 8294.0 ± 0.36 to 14.4?0.01 μg g-1 and from 2.04 ± 0.01 to 0.24 ± 0.01 μg g-1, respectively. There are no guidelines for the levels of lead and cadmium in food wrappers; however the levels reported in this research are quite high and may give cause for concern.
  F.M. Adebiyi , O.I. Asubiojo , T.R. Ajayi and L.M. Durosinmi
  Multisolvent determination of the pH of soils from areas of Nigeria bituminous sand deposits was carried out using the electrometric method to establish the pH of the soils before the commencement of the exploitation of the bituminous sands and also to know the variation of pH of the soils using variable solvents over a range of soil to solvent dilution ratios. Soil sampling was done at two different depths viz., 0-50 cm and 50-100 cm and the samples were prepared for pH measurements using three commonly recommended solvents viz: distilled water, 0.01 M and 1 M KCI solutions. The results indicate the soil types are acid soils. This research will also add to the existing exploration data on the study area before the commencement of the exploitation of the natural resources.
  A.O. Ogunfowokan , L.M. Durosinmi , J.A.O. Oyekunle , O.A. Ogunkunle and I.T. Igbafe
  The present study aimed at effective management and purification of industrial wastewaters using cheaper and locally available local alum for removal of heavy metals as a substitute to convectional coagulants. The effect of local alum, aluminum sulphate and ferric chloride on the metal contents of industrial wastewaters was investigated in the pH range of 5.9-7.5. Wastewater samples from battery, paint and textile industries were treated with different doses of locally available alum, aluminum sulphate and ferric chloride in order to determine and compare their effectiveness in removing heavy metal contents of the wastewaters. The percentage removal of the metals from the industrial wastewaters increased with mg L-l dosage of the coagulants used with optimal performance generally at a slightly alkaline pH. Local alum proved to be equally effective in removing heavy metals from the industrial wastewater samples compared with the conventional aluminum sulphate and ferric chloride.
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