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A Low‐cost Paper‐based Diamond Electrode for Trace Copper Analysis at On‐site Environmental Area
Author(s) -
Thangphatthanarungruang Jeerakit,
Lomae Atchara,
Chailapakul Orawon,
Chaiyo Sudkate,
Siangproh Weena
Publication year - 2021
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.202060305
Subject(s) - copper , tap water , detection limit , electrode , diamond , anodic stripping voltammetry , square wave , stripping (fiber) , analytical chemistry (journal) , trace (psycholinguistics) , groundwater , contamination , chemistry , materials science , electrochemistry , environmental chemistry , environmental science , metallurgy , environmental engineering , chromatography , geology , electrical engineering , philosophy , linguistics , voltage , ecology , engineering , composite material , biology , geotechnical engineering
In the present study, an alternative platform for trace copper ions (Cu(II)) determination using a diamond electrode in combination with a disposable paper‐based analytical device (d‐PAD) has been proposed. First, the complexation between Cu(II) and 1,10‐phenanthroline ligand was adsorptively accumulated onto a paper that is directly in contact with the diamond electrode and measured via square wave anodic stripping voltammetry. Under the optimal experimental conditions, the peak current was proportional to the concentration of Cu(II) in the range of 0.4–70 ng mL −1 , and the detection limit was found to be 0.1 ng mL −1 . Most importantly, this platform can be successfully applied to detect trace Cu(II) in different water samples (drinking water, tap water, groundwater and river water) with satisfactory results. Thus, the proposed d‐PAD could be a highly efficient platform for trace Cu(II) determination in environmental samples.