Portable Mini-Electrochemical Cell: Integrating Microsampling and Micro-Electroanalysis for Multipurpose On-Site Nitrite Sensing DOI

Shohreh Madani,

Amir Hatamie

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

In modern analytical chemistry, one of the primary goals is to develop miniaturized, easy-to-use sensing tools, particularly those with multitasking capabilities. this work, we designed a mini-voltammetric cell that integrates modified Au microelectrode (Au/Au NPs as working electrode) and an Ag/AgCl reference electrode installed within micropipette tip. This combined tool not only enables portable on-site microvolume sampling─requiring (around 20-40 μL) or single droplet─but also facilitates direct micro-electroanalysis in short time. To evaluate its capabilities, was optimized for trace analysis nitrite ions demonstrated linear responses ranges 20-150 150-1200 μM, acceptable limit detection (LOD) 18.40 meeting both WHO EPA standards levels. Furthermore, it exhibited high selectivity, stability (up 36 continuous measurements 3.24% signal drop), repeatability (RSD 2.98%,

Language: Английский

An Electroanalytical Enzymeless α-Fe2O3-ZnO Hybrid Nanostructure-Based Sensor for Sensitive Quantification of Nitrite Ions DOI Creative Commons
Rafiq Ahmad,

Abdullah Abdullah,

Md Tabish Rehman

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(8), P. 706 - 706

Published: April 18, 2024

Nitrite monitoring serves as a fundamental practice for protecting public health, preserving environmental quality, ensuring food safety, maintaining industrial safety standards, and optimizing agricultural practices. Although many nitrite sensing methods have been recently developed, the quantification of remains challenging due to sensitivity selectivity limitations. In this context, we present fabrication enzymeless iron oxide nanoparticle-modified zinc nanorod (α-Fe

Language: Английский

Citations

5
Nanometer-Sized MIL-101(Cr) Loaded with Metal Ions for Applications as a Nitrite Sensor with Enhanced Electrochemical Properties DOI

Yuhua Dong,

Fengkai Liu,

Shengquan Liu

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(14), P. 16620 - 16629

Published: July 11, 2024

Language: Английский

Citations

5
Rational design of carbon dot nanozymes for ratiometric dual-signal and smartphone-assisted visual detection of nitrite in food matrices DOI

Yumin Hao,

Zihan Wang, Huiping Wang

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 136156 - 136156

Published: Oct. 11, 2024

Language: Английский

Citations

5
Innovative Electrochemical Nano-Robot: Integrating Printed Nanoelectronics with a Remote-Controlled Robotic for On-Site Underwater Electroanalysis DOI
S. Haghighi,

Saba Mohammadlou,

Shayan Angizi

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Smart and remote sensing technologies offer significant advantages across various applications. This study introduces an innovative approach integrating printed electrochemical nanosensors with a remotely controllable underwater robot, creating "Robo-sensor" for surface water sensing. Unlike conventional sensors, the Robo-sensor operates in three dimensions, both on underwater, targeting specific locations such as coastal areas deep-sea environments while transmitting data to external analytical unit. To achieve this, we developed conductive nanoink by combining graphite, silver nanorods (AgNRs; diameter: 30 ± 20 nm, length: 2 0.2 μm), nail polish cohesive agent, organic solvent. ink was used fabricate electroanalytical system mini-robot's body. The Robo-sensor, connected portable potentiostat, demonstrated linear responses hydroquinone (HQ) nitrite ions, detection ranges of 5.0–1356.0 3.0–1200.0 μM, respectively, under artificial seawater conditions (High salinity). Its repeatability (RSD <6%), stability (up 40 continuous applications error < 10%), sensitivity were thoroughly evaluated. Robo-sensor's practical included detecting chemical leaks pipelines containing HQ, hazardous relevant industries petrochemicals. Additionally, it analyzed contaminated NO2– near far from wastewater discharge pipeline, providing valuable insights environmental ecosystem investigations. In conclusion, enables on-site analysis reducing time, costs, risks high-hazard like deep waters. With further modifications, this strategy could be adapted diverse applications, including offshore oil petrochemical operations, corrosion studies, monitoring, thus expanding real-world impact science.

Language: Английский

Citations

0
Colorimetric nanozyme sensor based on chain-like PtNi nanoparticles for nitrite ion detection in food samples DOI
Wang Junli, Ping Fang, Lei Li

et al.

Food Chemistry, Journal Year: 2025, Volume and Issue: 487, P. 144715 - 144715

Published: May 13, 2025

Language: Английский

Citations

0
Portable Mini-Electrochemical Cell: Integrating Microsampling and Micro-Electroanalysis for Multipurpose On-Site Nitrite Sensing DOI

Shohreh Madani,

Amir Hatamie

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

In modern analytical chemistry, one of the primary goals is to develop miniaturized, easy-to-use sensing tools, particularly those with multitasking capabilities. this work, we designed a mini-voltammetric cell that integrates modified Au microelectrode (Au/Au NPs as working electrode) and an Ag/AgCl reference electrode installed within micropipette tip. This combined tool not only enables portable on-site microvolume sampling─requiring (around 20-40 μL) or single droplet─but also facilitates direct micro-electroanalysis in short time. To evaluate its capabilities, was optimized for trace analysis nitrite ions demonstrated linear responses ranges 20-150 150-1200 μM, acceptable limit detection (LOD) 18.40 meeting both WHO EPA standards levels. Furthermore, it exhibited high selectivity, stability (up 36 continuous measurements 3.24% signal drop), repeatability (RSD 2.98%,

Language: Английский

Citations

1