Determination of diffusion coefficient of chloride in concrete: an electrochemical impedance spectroscopic approach

2007 ◽  
Vol 41 (7) ◽  
pp. 1315-1326 ◽  
Author(s):  
R. Vedalakshmi ◽  
R. Renugha Devi ◽  
Bosco Emmanuel ◽  
N. Palaniswamy
Author(s):  
Jamballi G. Manjunatha ◽  
Girish Tigari ◽  
Hareesha Nagarajappa ◽  
Nambudumada S. Prinith

Various carbon-based sensors (graphene, carbon nanotubes, graphite, pencil graphite, glassy carbon, etc.) have distinctive behavior and a broad range of importance for identifying sex hormones like estriol, estradiol, estrone, progesterone, and testosterone. The current review emphasizes voltammetric, amperometric, and electrochemical impedance spectroscopic methods for detecting some of these hormones. The existence, structural aspects, nature, and biological importance of each hormone were analyzed in detail and their analysis with different electroanalytical methods was considered. Unique methodologies and innovations of electrochemical sensors for hormones based on carbon materials modified by different agents were examined. In this review, the interaction among various sensor materials and analytes in different supporting electrolyte media is premeditated. The most important significances of the electroanalytical methodologies were discussed based on sensor selectivity, sensitivity, stability, the limit of detection, repeatability, and reproducibility.


2021 ◽  
Vol 23 (2) ◽  
Author(s):  
Subhan Shaik ◽  
Aarthi Saminathan ◽  
Deepak Sharma ◽  
Jagdish A Krishnaswamy ◽  
D Roy Mahapatra

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