Search the digital library catalog

Query:	search in
	search in
	search in
	search in
Work type:	* old and bologna study programme
Language:
Search in:
Options:	Show only hits with full text
	Reset

1 - 2 / 2

Electrochemical and surface analysis of 2-phenylimidazole adsorbed on copper from chloride solution
Matjaž Finšgar, Klodian Xhanari, 2018, original scientific article

Abstract: The electroanalytical and surface characterization of copper immersed in 3 wt.% NaCl solution containing 1 mM of 2-phenylimidazole (2PhI) is presented. It was proven that 2PhI can be employed as corrosion inhibitor for copper using various electrochemical analyses, such as cyclic voltammetry, chronopotentiometry, electrochemical impedance spectroscopy, and potentiodynamic curve measurements. The adsorption of 2PhI on copper was further analyzed by 3D-profilometry, attenuated total reflectance Fourier transform infrared spectroscopy, contact angle measurements, and scanning electron microscopy equipped with an energy dispersive X-ray spectrometer. This system was therefore comprehensively described by various analytical approaches.
Keywords: corrosion inhibitor, copper, electrochemical impedance spectroscopy, EIS, cyclic voltammetry, attenuated total reflectance Fourier transform infrared, ATR-FTIR
Published in DKUM: 17.01.2019; Views: 2084; Downloads: 392
Full text (5,88 MB)
This document has many files! More...

Validation of electroanalytical method with antimony electrode for trace metal analysis
Aljaž Ramot, 2017, undergraduate thesis

Abstract: The purpose of this thesis is to validate the electroanalytical method with an antimony electrode for trace metal analysis. The validation began with the determination of the limit of detection (LOD) and the limit of quantification (LOQ), proceeded with determining the method’s linearity and concluded with determination of accuracy and precision. The trace metal analysis was conducted via square-wave anodic stripping voltammetry (SWASV). Cyclic voltammetry (CV) was used to test the reversibility of the [Fe(CN)6] 3/[Fe(CN)6] 4 system. All the analyses were conducted in a 0.01 M HCl solution. The LOD and LOQ were not possible to report with certainty, since the method has such a low LOD that the contamination with heavy metals, even in ultrapure acid, was too high. The method had a linear response at deposition potentials of 1.2 V, 1.1 V and 1.0 V vs. Ag/AgCl for Pb(II) and Cd(II) from 14.6 µg L 1 to 100.0 µg L 1. It has further been proven that the method is accurate and precise for all three deposition potentials at 15 µg L 1, 25 µg L 1, 30 µg L 1, 40 µg L 1 concentrations of analytes. The results have shown that the method is best used at a deposition potential of 1.1 V vs. Ag/AgCl.
Keywords: heavy metal analysis, trace analysis, antimony electrode, SWASV, voltammetry
Published in DKUM: 28.09.2017; Views: 1742; Downloads: 215
Full text (2,32 MB)

Search done in 0.06 sec.