Modefide Screen Printed Electrode For Detection of Pb and Hg Using Peptide Nanotube

As is well known, heavy metals pose severe risks to the environment and human health due to their high toxicity, and have drawn extensive attention worldwide.

Lead and mercury are two common pollutants among a number of heavy metal ions and especially have harmful effect on a living organism. For example, even low concentrations of Pb2+can cause serious damage to brain, immune system, and central nervous system, and low level exposure to Hg2+ can lead to serious bioaccumulation in organisms and cause damage to the nervous system, immune system, reproductive system, and cardiovascular system. Therefore, it is necessary to develop high sensitive methods for the detection of these heavy metal ions.

To date, a number of analytical methods including atomic absorption spectrometry (AAS), inductively coupled plasma mass spectrometry (ICP-MS), inductively coupled plasma atomic emission spectrometry ICP-AES), fluorescent, electrochemical, and colorimetric methods have been widely used in the detection of heavy metals. In this study, electrochemical sensor was developed by modification of screen printed electrode (SPE) using peptide nanotube for determination of Pb2+ and Hg+2 in environmental samples.

Prepared by: Samira Ashour B.Shoub (GS40208)