Highly ordered surfactant micelles function as the extraction matrix for direct electrochemical detection of halonitrobenzenes at the ppb level

The Analyst ◽  
2016 ◽  
Vol 141 (7) ◽  
pp. 2303-2307 ◽  
Author(s):  
Lina Yao ◽  
Fei Yan ◽  
Bin Su
Keyword(s):  
Electrochemical Detection ◽  
Surfactant Micelles ◽  
Complex Samples ◽  
Soil Dispersion

Electrochemical detection of halonitrobenzenes in complex samples like soil dispersion was accomplished using surfactant micelles as the extraction matrix.

Direct electrochemical analysis in complex samples using ITO electrodes modified with permselective membranes consisting of vertically ordered silica mesochannels and micelles

2015 ◽  
Vol 51 (100) ◽  
pp. 17736-17739 ◽  
Author(s):  
Fei Yan ◽  
Wenjing Zheng ◽  
Lina Yao ◽  
Bin Su
Keyword(s):  
Human Serum ◽  
Electrochemical Detection ◽  
Cost Effective ◽  
Electrochemical Analysis ◽  
Complex Media ◽  
Complex Samples ◽  
Redox Active ◽  
Cost Effective Method ◽  
Pre Treatment ◽  
Organic Analytes

Herein we report a simple and cost-effective method for direct electrochemical detection of redox-active small organic analytes in complex media, such as soil dispersions, human serum and milk, without sample pre-treatment.

Electrochemical Detection of Selected Organic Components in the Eluate from High-Performance Liquid-Chromatography

1974 ◽  
Vol 20 (8) ◽  
pp. 992-997 ◽  
Author(s):  
Peter T Kissinger ◽  
Lawrence J Felice ◽  
Ralph M Riggin ◽  
Lawrence A Pachla ◽  
David C Wenke
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Electrochemical Detection ◽  
High Performance ◽  
Complex Samples ◽  
Organic Constituents ◽  
Electrochemically Active ◽  
Analytical Reagents ◽  
Endogenous Metabolites

Abstract High-performance liquid chromatography can be combined with hydrodynamic thin-layer electrochemistry for determination of trace amounts of organic constituents in complex samples. With small and inexpensive analyzers based on these two techniques, as little as 1 pg of an electrochemically active component can be detected in a few minutes. Because many of the important low-molecular-weight organic constituents of body fluids— both endogenous metabolites and drugs—undergo electrochemical reactions, it seems reasonable to presume that useful assays might be developed by using the above methodology. Beginning to explore this presumption, we illustrate how uric acid, ascorbic acid, catecholamines, and related tyrosine metabolites might be measured in urine and serum. In some cases, liquid chromatography with electrochemical detection provides better sensitivity, selectivity, and speed than traditional methods, while minimizing the need for analytical reagents. We describe the basic approach and progress to date and suggest future applications.

SU-8/Pyrex microchip electrophoresis with integrated electrochemical detection for class-selective electrochemical index determination of phenolic compounds in complex samples

2013 ◽  
Vol 34 (14) ◽  
pp. 2129-2135 ◽  
Author(s):  
Raquel Castañeda ◽  
Diana Vilela ◽  
María Cristina González ◽  
Sandra Mendoza ◽  
Alberto Escarpa
Keyword(s):  
Phenolic Compounds ◽  
Electrochemical Detection ◽  
Microchip Electrophoresis ◽  
Complex Samples
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