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X. Wang, S. Xia, J. Zhao, H. Zhao and J. N. Renault, “Inhibitive Determination of Heavy Metal Ions by Conductometric Nitrate Reductase Biosensor,” Chem. Res. Chinese Universities, 2009, Vol. 25, pp. 443-445

has been cited by the following article:

• TITLE: Horseradish Peroxidase Biosensor to Detect Zinc Ions in Aqueous Solutions

  AUTHORS: Mambo Moyo

  KEYWORDS: Horseradish Peroxidase; Maize Tassel; Multiwalled Carbon Nanotubes; Metal Biosensor; Zn2+

  JOURNAL NAME: Open Journal of Applied Biosensor, Vol.3 No.1, February 17, 2014

  ABSTRACT: Maize tassel-multiwalled carbon nanotube (MT-MWCNT) composite has been used as a matrix for physical adsorption of horseradish peroxidase (HRP) onto the surface of a glassy carbon electrode through electrostatic interactions. The HRP/MT-MWCNT biosensor was applied for the detection of Zn2+ in aqueous solution. The biosensor designed was able to determine Zn2+ in the range of 0.35 - 12 mg/L with a detection limit of 7.5 μg/L. The inhibition was found to be reversible and uncompetitive when data were modeled using the Dixon and Cornish-Bowden plots. The biosensor was found to have good repeatability, reproducibility and high selectivity. The developed biosensor can be used to detect other HRP inhibiting trace metal ions.