Papers by Salamatu A L I Y U Hayatu
Journal of Chemical Sciences, Jun 1, 2015
Chemical Science International Journal, 2018
Asian Journal of Chemistry, 2015
IEEE Sensors Journal, 2014
A new electrochemical sensor based on screen-printed electrode (SPE) gold nanoparticles (AuNPs) h... more A new electrochemical sensor based on screen-printed electrode (SPE) gold nanoparticles (AuNPs) has been fabricated for determination of Pb(II) ion by anodic stripping voltammetry in Tris-HCl (pH 5) solution. In this medium, Pb(II) ion was preconcentrated on SPE modified with AuNPs and stripped anodically in linear sweep voltammetry mode, with a peak potential at -0.5 V. The effect of various parameters (pH, supporting electrolyte composition, deposition potential, deposition time, and scan rate) on the sensitivity was studied. Under controlled deposition time for 240 s, the detection limit (3 s) was 1.3-ng ml-1 Pb(II) and the calibration curve was linear up to 30 μg ml-1. The procedure was applied to the determination of Pb(II) ion in tap water with satisfactory results. The prepared modified electrode shows several advantages such as high sensitivity, long-time stability, wide linear range, and ease of preparation.
A new electrochemical sensor based on
screen-printed electrode (SPE) gold nanoparticles (AuNPs)
h... more A new electrochemical sensor based on
screen-printed electrode (SPE) gold nanoparticles (AuNPs)
has been fabricated for determination of Pb(II) ion by anodic
stripping voltammetry in Tris-HCl (pH 5) solution. In this
medium, Pb(II) ion was preconcentrated on SPE modified with
AuNPs and stripped anodically in linear sweep voltammetry
mode, with a peak potential at −0.5 V. The effect of various
parameters (pH, supporting electrolyte composition, deposition
potential, deposition time, and scan rate) on the sensitivity was
studied. Under controlled deposition time for 240 s, the detection
limit (3 s) was 1.3-ng ml−1 Pb(II) and the calibration curve
was linear up to 30 μg ml−1. The procedure was applied to the
determination of Pb(II) ion in tap water with satisfactory results.
The prepared modified electrode shows several advantages such
as high sensitivity, long-time stability, wide linear range, and
ease of preparation.
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Papers by Salamatu A L I Y U Hayatu
screen-printed electrode (SPE) gold nanoparticles (AuNPs)
has been fabricated for determination of Pb(II) ion by anodic
stripping voltammetry in Tris-HCl (pH 5) solution. In this
medium, Pb(II) ion was preconcentrated on SPE modified with
AuNPs and stripped anodically in linear sweep voltammetry
mode, with a peak potential at −0.5 V. The effect of various
parameters (pH, supporting electrolyte composition, deposition
potential, deposition time, and scan rate) on the sensitivity was
studied. Under controlled deposition time for 240 s, the detection
limit (3 s) was 1.3-ng ml−1 Pb(II) and the calibration curve
was linear up to 30 μg ml−1. The procedure was applied to the
determination of Pb(II) ion in tap water with satisfactory results.
The prepared modified electrode shows several advantages such
as high sensitivity, long-time stability, wide linear range, and
ease of preparation.
screen-printed electrode (SPE) gold nanoparticles (AuNPs)
has been fabricated for determination of Pb(II) ion by anodic
stripping voltammetry in Tris-HCl (pH 5) solution. In this
medium, Pb(II) ion was preconcentrated on SPE modified with
AuNPs and stripped anodically in linear sweep voltammetry
mode, with a peak potential at −0.5 V. The effect of various
parameters (pH, supporting electrolyte composition, deposition
potential, deposition time, and scan rate) on the sensitivity was
studied. Under controlled deposition time for 240 s, the detection
limit (3 s) was 1.3-ng ml−1 Pb(II) and the calibration curve
was linear up to 30 μg ml−1. The procedure was applied to the
determination of Pb(II) ion in tap water with satisfactory results.
The prepared modified electrode shows several advantages such
as high sensitivity, long-time stability, wide linear range, and
ease of preparation.