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Ruengpirasiri P, Charoensin P, Aniwattapong A, Natekuekool P, Srisomwat C, Pinyorospathum C, Chaiyo S, Yakoh A. Graphene Pseudoreference Electrode for the Development of a Practical Paper-Based Electrochemical Heavy Metal Sensor. ACS OMEGA 2024; 9:1634-1642. [PMID: 38222522 PMCID: PMC10785785 DOI: 10.1021/acsomega.3c08249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/23/2023] [Accepted: 11/29/2023] [Indexed: 01/16/2024]
Abstract
Paper-based electrochemical devices (PEDs) have emerged as versatile platforms that bridge analytical chemistry and materials science, demonstrating advantages of portability, cost-effectiveness, and environmental sustainability. This study investigates the integration of a graphene pseudoreference electrode (GPRE) into a PED, and it exhibits potential advantages over the traditional Ag/AgCl pseudoreference electrode (PRE). In addition, the electrochemical properties and stability of GPRE are compared with those of the traditional Ag/AgCl PRE. The results demonstrate that GPRE exhibits a stable and reproducible potential during electrochemical measurement throughout 180 days, demonstrating its suitability as an alternative to an expensive metal PRE. Furthermore, a GPRE-incorporated paper-based device is designed and evaluated for use in the electrochemical detection of cadmium (Cd) and lead (Pb) using an in situ bismuth-modified electrode. The GPRE-incorporated PED exhibited good analytical performance, with a low limit of detection of 0.69 and 5.77 ng mL-1 and electrochemical sensitivities of 70.16 and 38.34 μA·mL·μg-1·cm-2 for Cd(II) and Pb(II), respectively. More than 99.9% accuracy of the sensor was obtained for both ions with respect to conventional inductively coupled plasma-mass spectrometry. The results highlight the effectiveness and suitability of the GPRE-incorporated PED as a sensor for various applications, such as environmental monitoring, food quality control, and medical diagnostics.
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Affiliation(s)
| | - Pimchanok Charoensin
- Kamnoetvidya
Science Academy, 999 Moo. 1, Payupnai, Wangchan, Rayong 21210, Thailand
| | - Akkrawat Aniwattapong
- Kamnoetvidya
Science Academy, 999 Moo. 1, Payupnai, Wangchan, Rayong 21210, Thailand
| | - Pemika Natekuekool
- Kamnoetvidya
Science Academy, 999 Moo. 1, Payupnai, Wangchan, Rayong 21210, Thailand
| | - Chawin Srisomwat
- Department
of Chemistry, Faculty of Science and Technology, Thammasat University, Pathumthani 12121, Thailand
| | - Chanika Pinyorospathum
- National
Laboratory Animal Center, Mahidol University, Nakhon Pathom 73170, Thailand
- Analytical
Sciences and National Doping Test Institute, Mahidol University, Bangkok 10400, Thailand
| | - Sudkate Chaiyo
- The
Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Center
of Excellence for Food and Water Risk Analysis (FAWRA), Department
of Veterinary Public Health, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Abdulhadee Yakoh
- The
Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Center
of Excellence for Food and Water Risk Analysis (FAWRA), Department
of Veterinary Public Health, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
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