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Articles by M.K. Morakinyo
Total Records ( 2 ) for M.K. Morakinyo
  O. Owoyomi , Ige Jide , M.S. Akanni , O.O. Soriyan and M.K. Morakinyo
  Synergistic effects in the mixed micelle of Sodium Dodecylsulphate (SDS) anionic and Triton X-100 (polyoxyethylene (9.5) p-1, 1, 3, 3-tetramethylbutylphenol) nonionic surfactant mixtures were investigated. The critical micelle concentrations of the mixtures were determined by ultraviolet/visible (UV) spectroscopic method at 25 ° C. The mixed micellar compositions and the estimation of the extent of interaction were determined on the basis of the regular solution model. The critical micelle concentration (cmc) values were lower than predicted from ideal mixture theory. Micellization is enhanced by the mixing of the two surfactants, that is synergistic interaction of the SDS and Triton X-100 in the mixed micelles observed. The reduction in cmc resulting from the mixing is comparable to those in other anionic/nonionic surfactant systems. The regular solution model interaction parameter of -2.19 was obtained, indicating an overall attractive interaction in the mixed micelle. Further evidence of molecular interaction in the mixed micelle was obtained from the kinetics of the aquation of Iron (II) bipyridyl complex in the mixed surfactant systems where a marked dependence of the aquation rate on medium compositions was observed.
  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.
 
 
 
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