A novel Fe-Chitosan-coated carbon electrode sensor for in situ As(III) detection in mining wastewater and soil leachate

Hwang, Jae-Hoon; Pathak, Pawan; Wang, Xiaochen; Rodriguez, Kelsey L.; Park, Jungsu; Cho, Hyoung J.; Lee, Woo Hyoung

doi:10.1016/j.snb.2019.05.044

Cited by 58 publications

(14 citation statements)

References 48 publications

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“…Various classes of electrochemical sensors exist and are categorized based on their electrical magnitude of detection: potentiometric measures changes in the ion-selective membrane potential (mV), conductometric measures changes in the conductance (G, Ω −1 ), impedimetric measures changes in the impedance (Z) over a range of frequencies (Hz), and voltammetric measures the change in current (pA) that occurs as a result of the initial electrochemical reaction caused by an applied voltage (mV). Various types of electrochemical sensors have been used to detect chemical and biological compounds, such as heavy metal ions [ 86 , 87 , 88 , 89 , 90 , 91 ], nitrite [ 92 ], pH [ 93 , 94 ], dissolved oxygen (DO) [ 95 , 96 ], phosphate [ 96 , 97 , 98 , 99 ], and free chlorine (or monochloramine) [ 94 , 100 , 101 , 102 , 103 ]; the technology used ranges from microelectrodes to screen-printed electrodes and can be applied to natural and engineered water systems and environmental samples (e.g., biofilms, metals, and plants). Voltammetric and potentiometric sensors are the most common types of electrochemical sensors used for PFAS detection.…”

Section: Needs and Current Status Of Pfass Sensor Developmentmentioning

confidence: 99%

Recent Developments of PFAS-Detecting Sensors and Future Direction: A Review

et al. 2020

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Per- and poly-fluoroalkyl substances (PFASs) have recently been labeled as toxic constituents that exist in many aqueous environments. However, traditional methods used to determine the level of PFASs are often not appropriate for continuous environmental monitoring and management. Based on the current state of research, PFAS-detecting sensors have surfaced as a promising method of determination. These sensors are an innovative solution with characteristics that allow for in situ, low-cost, and easy-to-use capabilities. This paper presents a comprehensive review of the recent developments in PFAS-detecting sensors, and why the literature on determination methods has shifted in this direction compared to the traditional methods used. PFAS-detecting sensors discussed herein are primarily categorized in terms of the detection mechanism used. The topics covered also include the current limitations, as well as insight on the future direction of PFAS analyses. This paper is expected to be useful for the smart sensing technology development of PFAS detection methods and the associated environmental management best practices in smart cities of the future.

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Section: Needs and Current Status Of Pfass Sensor Developmentmentioning

confidence: 99%

Recent Developments of PFAS-Detecting Sensors and Future Direction: A Review

et al. 2020

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“…For the sensor evaluation in real environmental samples two wastewater samples were obtained: one from a mining site (Il-gwang mine) and the other from a soil contaminated site (Jukcheong mine) in South Korea [33]. Regarding soil leachate preparation, the soil from the Jukcheong mine site was first sieved using a #10 (2 mm) sieve and dried overnight to ensure adequate moisture removal.…”

Section: Methodsmentioning

confidence: 99%

A Novel Bismuth-Chitosan Nanocomposite Sensor for Simultaneous Detection of Pb(II), Cd(II) and Zn(II) in Wastewater

et al. 2019

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A novel bismuth (Bi)-biopolymer (chitosan) nanocomposite screen-printed carbon electrode was developed using a Bi and chitosan co-electrodepositing technique for detecting multiple heavy metal ions. The developed sensor was fabricated with environmentally benign materials and processes. In real wastewater, heavy metal detection was evaluated by the developed sensor using square wave anodic stripping voltammetry (SWASV). The nanocomposite sensor showed the detection limit of 0.1 ppb Zn2+, 0.1 ppb Cd2+ and 0.2 ppb Pb2+ in stock solutions. The improved sensitivity of the Bi-chitosan nanocomposite sensor over previously reported Bi nanocomposite sensors was attributed to the role of chitosan. When used for real wastewater samples collected from a mining site and soil leachate, similar detection limit values with 0.4 ppb Cd2+ and 0.3 ppb Pb2+ were obtained with relative standard deviations (RSD) ranging from 1.3% to 5.6% (n = 8). Temperature changes (4 and 23 °C) showed no significant impact on sensor performance. Although Zn2+ in stock solutions was well measured by the sensor, the interference observed while detecting Zn2+ in the presence of Cu2+ was possibly due to the presence of Cu-Zn intermetallic species in mining wastewater. Overall, the developed sensor has the capability of monitoring multiple heavy metals in contaminated water samples without the need for complicated sample preparation or transportation of samples to a laboratory.

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“…The chitosan-Fe modified sensor demonstrated high sensitivity to As(III), with the LOD of in mine wastewater being 1.12 ppb and soil leachate being 1.01 ppb. 52…”

Section: Modification Of Printing Ink To Improve the Sensitivity Of Spesmentioning

confidence: 99%

Review—An Overview on Recent Progress in Screen-Printed Electroanalytical (Bio)Sensors

2022

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Portability is one of the essential keys in the development of modern analytical devices. Screen printing technology is an established technology for both chemical and biosensor development. Screen printing technology has been used to generate a variety of electronic sensors that are rapid, cost-effective, on-site, real-time, inexpensive, and practical for use in healthcare, environmental monitoring, industrial monitoring, and agricultural monitoring. This review aims to describe recent research progress related to the development and improvement of screen-printed electrodes (SPEs). We also demonstrate the wide range of applications, also highlighting the market directions and the need for novel devices to be used by non-specialists. Finally, we conclude and provide an overview of the constraints and future opportunities of SPEs in biosensor application.

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A novel Fe-Chitosan-coated carbon electrode sensor for in situ As(III) detection in mining wastewater and soil leachate

Cited by 58 publications

References 48 publications

Recent Developments of PFAS-Detecting Sensors and Future Direction: A Review

Recent Developments of PFAS-Detecting Sensors and Future Direction: A Review

A Novel Bismuth-Chitosan Nanocomposite Sensor for Simultaneous Detection of Pb(II), Cd(II) and Zn(II) in Wastewater

Review—An Overview on Recent Progress in Screen-Printed Electroanalytical (Bio)Sensors

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