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Eco‐friendly Sensors Developed by Herbal Based Silver Nanoparticles for Electrochemical Detection of Mercury (II) Ion
Author(s) -
Eksin Ece,
Erdem Arzum,
Fafal Tugce,
Kıvçak Bijen
Publication year - 2019
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201800776
Subject(s) - detection limit , differential pulse voltammetry , mercury (programming language) , silver nanoparticle , electrochemistry , cyclic voltammetry , chemistry , nuclear chemistry , electrochemical gas sensor , tap water , metal ions in aqueous solution , dielectric spectroscopy , voltammetry , electrode , metal , inorganic chemistry , nanoparticle , materials science , chromatography , nanotechnology , organic chemistry , environmental engineering , computer science , engineering , programming language
In our study, the single‐use & eco‐friendly electrochemical sensor platform based on herbal silver nanoparticles (AgNPs) was developed for detection of mercury (II) ion (Hg 2+ ). For this purpose, the surface of pencil graphite electrode (PGE) was modified with AgNPs and folic acid (FA), respectively. The concentrations of AgNPs and FA were firstly optimized by differential pulse voltammetry (DPV) to obtain an effective surface modification of PGE. Each step at the surface modification process was characterized by using cyclic voltammetry (CV) and electrochemical impedence spectroscopy (EIS). The limit of detection (LOD) for Hg 2+ was estimated and found to be 8.43 μM by CV technique. The sensor presented an excellent selectivity for Hg 2+ against to other heavy metal ions such as Ca 2+ , Cd 2+ , Cr 3+ , Cu 2+ , Mg 2+ , Ni 2+ , Pb 2+ , Zn 2+ , Co 2+ and Mn 2+ . Moreover, a rapid, selective and sensitive detection of Hg 2+ was successfully performed in the samples of tap water within 1 min.