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Amplified Zinc Signal at a Nanocarbon Film Electrode for Lipopolysaccharide Detection

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journal contribution
posted on 2018-10-17, 00:00 authored by Dai Kato, Yoshio Suzuki, Kyoko Yoshioka, Tomoyuki Kamata, Masami Todokoro, Osamu Niwa
We report an electrochemical method for detecting low concentrations of lipopolysaccharide (LPS), based on amplified zinc (Zn) signals on a sputtered nanocarbon film electrode. The nanocarbon film electrode allowed us to detect Zn2+ ions at a lower concentration than a conventional glassy carbon electrode using anodic stripping voltammetry. This was due to the efficient accumulation and detection of Zn2+ ions with very low noise made possible by the ultraflat nanocarbon film surface. The amplified Zn signals from a newly synthesized Zn-complex-based probe were successfully used to detect LPS with low concentrations without employing conventional reagents.