Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Emmanuel I. Iwuoha"'
Autor:
Carla Gouveia-Caridade, Madalina M. Barsan, Emmanuel I. Iwuoha, Priscilla G. L. Baker, Christopher M.A. Brett, Lisebo Phelane
Publikováno v:
Analytical Letters. 53:308-321
The modification of polysulfone (PSF) with multi-walled carbon nanotubes (MWCNT) is presented as a platform for the development of a tyrosinase biosensor. PSF, dissolved in dichloromethane,...
Publikováno v:
Analytical Letters. 52:373-398
Chemical sensors relying on graphene-based materials have been widely used for electrochemical determination of metal ions and have demonstrated excellent signal amplification. This study reports a...
Publikováno v:
Analytical Letters. 50:1887-1896
Organic compounds such as antibiotics that are not effectively removed by modern-day treatment technology are a growing threat to water quality and health. The emergence of antibiotics in the aquatic environment is a matter of concern as they may ind
Publikováno v:
Analytical Letters. 48:1311-1332
Silver, bismuth, and bismuth-silver nanoparticles were synthesized and characterized by cyclic voltammetry, electrochemical impedance spectroscopy, ultraviolet-visible spectroscopy, infrared spectroscopy, Raman spectroscopy, and transmission electron
Publikováno v:
Journal of Environmental Science and Health, Part A. 47:2084-2093
Stripping voltammetry as technique has proved to be very useful in the analysis of heavy and other metal ions due to its excellent detection limits and its sensitivity in the presence of different metal species or interfering ions. Recent assessments
Autor:
Emmanuel I. Iwuoha, J. Catherine Ngila, Philiswa N. Nomngongo, Everlyne A. Songa, Vincent O. Nyamori
Publikováno v:
Analytical Letters. 44:2031-2046
Fabrication of an amperometric biosensor for determination of heavy metals in tap water based on the inhibition of horseradish peroxidase activity is reported. The inhibition of the biosensor's response to 0.95 mM H2O2 at −200 mV (vs. Ag/AgCl) foll
Publikováno v:
Analytical Letters. 44:1879-1890
Square wave Voltammetric (SWV) studies of indigo in acidic solutions are reported. The results were applied to develop a determination method for indigo on a glassy carbon electrode (GC). The indigo Cyclic Voltammograms were characterized by reversib
Autor:
Omotayo A. Arotiba, Tesfaye Waryo, Nicolette Hendricks, Ciara K. O'Sullivan, Abd Almonam Baleg, Natasha West, Rachel F. Ngece, Priscilla G. L. Baker, Emmanuel I. Iwuoha
Publikováno v:
Analytical Letters. 44:1956-1966
Overoxidized polypyrrole (OvoxPpy) doped with gold-nanoparticles (GNP) on a glassy carbon electrode (GCE) was used as a platform to construct a novel label-free impedimetric immunosensor for anti-transglutaminase (anti-tTG). Field emission scanning e
Autor:
Tesfaye Waryo, Emmanuel I. Iwuoha, Ciara K. O'Sullivan, Priscilla G. L. Baker, Vivian D. van Wyk
Publikováno v:
Analytical Letters. 44:2005-2018
Highly boron doped chemical vapor deposition (CVD) polycrystalline diamond plates have been crushed under high pressure to produce a sintered mass boron doped diamond sheet with an approximate doping level of 1018–21 atoms/cm3. The electrochemical
Autor:
Tesfaye Waryo, Avril Williams, Emmanuel I. Iwuoha, Priscilla G. L. Baker, Lundi V. Ngqongwa, Milua Masikini
Publikováno v:
Analytical Letters. 44:2047-2060
Amperometric sensors for the detection of bisphenol A (BPA) were developed by drop coating an amorphous hydroxy iron product (FeOx) and its composites with β-cyclodextrin (BCD) on the surface of glassy carbon electrodes (GCE). The composite material