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EnglishLangmuir-Blodgett (LB) nano-thin molecular monolayers of phospholipid dipalmitoyl-phosphatidyl-ethanolamine (DPPE) [1] were deposited from aqueous subphase. The DPPE LB films were with a thickness of ~ 3 nm. They were studied as biosensor platform for detection of Cadmium ions (Cd2+). The change of the electrical response of the DPPE LB films due to the presence of Cd2+ ions was characterized by means of electrochemical impedance spectroscopy in the frequency range 1 Hz – 3 MHz, as well as with linear sweep and cyclic DC voltammetry. The electrical measurements were performed by applying a micropipette-drop technique. The obtained results show that in this way one can reliably detect Cd2+ by lipid monolayers. The applied electro-analytical methods have potential to be used for detection of Cd2+ contamination of water, e.g., Cd2+ at concentration level of 1 μg/L.
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| Titolo: | Langmuir-Blodgett nano-thin monolayers of phospholipids: electrical response to Cadmium ions |
| Autori: | |
| Data di pubblicazione: | 2020 |
| Handle: | http://hdl.handle.net/20.500.11770/306988 |
| Appare nelle tipologie: | 4.2 Abstract in Atti di convegno |
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