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Number of results

Journal

2012 | 10 | 6 | 1824-1829

Article title

Electrochemical determination of tyrosine in the presence of uric acid at a carbon paste electrode modified with multi-walled carbon nanotubes enhanced by sodium dodecyl sulfate

Content

Title variants

Languages of publication

EN

Abstracts

EN
Tyrosine (Tyr) was quantitated with high sensitivity and selectivity in the presence of uric acid (UA) using a carbon paste electrode modified with multi-walled carbon nanotubes. Tyr and UA were catalytically oxidized with diffusion-controlled characteristics. They were determined simultaneously by differential pulse voltammetry with a potential difference of 350 mV. The electrocatalytic currents increase linearly with Tyr and UA concentrations 4×10−7−1×10−4 M and 3×10−7−2×10−4 M. Their detection limits were 1×10−7 and 5.1×10−8 M respectively. In the presence of sodium dodecyl sulfate the Tyr detection limit improved from 1×10−7 to 6.9×10−8 M. The electrode was successfully used to quantitate Tyr and UA in serum. [...]

Publisher

Journal

Year

Volume

10

Issue

6

Pages

1824-1829

Physical description

Dates

published
1 - 12 - 2012
online
21 - 9 - 2012

Contributors

  • Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, 87317-51167, Islamic Republic of Iran
  • Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, 87317-51167, Islamic Republic of Iran
author
  • Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, 87317-51167, Islamic Republic of Iran
author
  • Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, 87317-51167, Islamic Republic of Iran

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11532-012-0119-x
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