|
1
|
Zhao Y, Song X. An Electrochemical-Based Point-of-Care Testing Methodology for Uric Acid Measurement. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2022; 2022:8555842. [PMID: 35915620 PMCID: PMC9338848 DOI: 10.1155/2022/8555842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/23/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Point-of-care technology (POCT) is an important method in clinical testing in the future, which can achieve the purpose of rapid analysis. In this work, we assembled an electrochemical POC sensor for uric acid (UA) by surface modification of a screen-printed electrode. Copper nanowires were used as electrode modifiers to achieve high-performance electrochemical oxidation of UA. This electrochemical sensor can achieve linear detection of UA in the range of 10 μM to 2 mM. The detection limit of the sensor was calculated to be 2 μM. Although the detection performance of this sensor is not competitive with high-performance electrochemical sensors, it has been able to meet the needs of POC detection. At the same time, the sensor has excellent anti-interference performance. It has also been used successfully to test urine and serum samples from healthy and gout patients.
Collapse
Affiliation(s)
- Yuetong Zhao
- Department of Rheumatology and Immunology, The First Hospital of China Medical University, No.155 Nnajing Street, Heping District, Shenyang 110000, Liaoning Province, China
| | - Xia Song
- Department of Operating Room, The First Hospital of China Medical University, No.155 Nnajing Street, Shenyang 110000, Liaoning Province, China
| |
Collapse
|
|
2
|
Wu Q, Ji C, Zhang L, Shi Q, Wu Y, Tao H. A simple sensing platform based on a 1T@2H-MoS 2/cMWCNTs composite modified electrode for ultrasensitive detection of illegal Sudan I dye in food samples. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:549-559. [PMID: 35048913 DOI: 10.1039/d1ay01775f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The work presented here describes a highly sensitive and simple electrochemical sensor for the detection of Sudan I dye based on a nanocomposite made of MoS2 heterogeneous nanosheets (1T@2H-MoS2) and carboxylated carbon nanotubes (cMWCNTs) (1T@2H-MoS2/cMWCNTs). XPS results indicate that the content of 1T phase MoS2 was estimated to be 72% in 1T@2H-MoS2. Electron microscopy results show that the tubular cMWCNTs are uniformly interwoven in MoS2 nanosheets to form a three-dimensional network structure. Due to the synergistic electrocatalytic ability and high electroactive surface area, the 1T@2H-MoS2/cMWCNTs modified electrode demonstrated excellent analytical performance for Sudan I, including simple operation, good stability and a wide linear range from 5.00 × 10-9 to 2.00 × 10-6 mol L-1 and 2.00 × 10-6 to 1.00 × 10-4 mol L-1 with an ultra-low detection limit of 1.56 × 10-9 mol L-1. The recoveries of Sudan I from spiked real samples (chilli powder and ketchup) were in the range of 95.60% to 106.10% with low RSD (<5%), indicating that the 1T@2H-MoS2/cMWCNTs modified electrode is a promising tool for the analysis of illegal Sudan I in food samples.
Collapse
Affiliation(s)
- Qiaoling Wu
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China.
- Key Laboratory of Fermentation Engineering and Biopharmacy of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Chun Ji
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Lingli Zhang
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China.
- Key Laboratory of Fermentation Engineering and Biopharmacy of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Qili Shi
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China.
- Key Laboratory of Fermentation Engineering and Biopharmacy of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Yuangen Wu
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China.
- Key Laboratory of Fermentation Engineering and Biopharmacy of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Han Tao
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China.
- Key Laboratory of Fermentation Engineering and Biopharmacy of Guizhou Province, Guizhou University, Guiyang 550025, China
| |
Collapse
|
|
3
|
Cheng J, Yang G, Guo J, Liu S, Guo J. Integrated electrochemical lateral flow immunoassays (eLFIAs): recent advances. Analyst 2022; 147:554-570. [DOI: 10.1039/d1an01478a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Schematic of integrated electrochemical lateral flow immunoassays.
Collapse
Affiliation(s)
- Jie Cheng
- School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Guopan Yang
- School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Jiuchuan Guo
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
| | - Shan Liu
- Department of Laboratory Medicine, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, University of Electronic Science and Technology, Chengdu 610072, China
| | - Jinhong Guo
- School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China
| |
Collapse
|