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Search results for: ELEKTRODY MEMBRANOWE
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The influence of dynamic load changes on temporary impedance in hydrogen fuel cells, selection and validation of the electrical equivalent circuit
PublicationTo achieve optimal performance of a fuel cell, a reliable monitoring and diagnostic method is required. The currently utilized methods give limited information or they are impossible to use under dynamic working conditions. To obtain comprehensive information about the fuel cell operation we utilized novel dynamic electrochemical impedance spectroscopy. Impedance measurements in dynamic mode were performed on a hydrogen fuel cell,...
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Influence of the internal electrolyte composition on amperometric sulphur dioxide sensor properties
PublicationIn this work investigation of an amperometric sulphur dioxide sensor with a liquid electrolyte, a mercury sulphate reference electrode and solid polymer electrolyte (Nafion) covered with gold as a working electrode properties is presented. The main goal of this research is to determine the influence of internal electrolyte composition on the sensor properties. Sensor filled with 1M and 5M sulphuric acid has been studied.
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Caffeine detection using CB-PLA electrode after Nd:YAG laser ablation in He atmosphere
Open Research DataThe dataset contains electrochemical studies in form of cyclic voltammetry (CV) and differential pulse voltammetry (DPV) of laser-activated 3D printed CB-PLA electrodes. The ablation of the 3D-printed CB-PLA electrodes was carried out using a pulsed LaserBlast 500 Nd:YAG laser (Quantel, France) operating at 1064 nm and a 6 ns pulse duration.
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The cyclic voltammetry studies of CB-PLA electrode after surface activation by electrolysis in 1M NaOH
Open Research DataThe dataset contains the electrochemical studies performed for surface activation of the CB-PLA 3D printed electrodes by electrolysis in 1M NaOH solution. The studies were performed after treatment at an anodic overpotential of 1V, found to be optimal for surface activation. The measurements were carried out with cyclic voltammetry (CV) under different...
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The electrochemical response to glassy carbon electrode modification steps towards viral electrochemical immunosensor preparation
Open Research DataThe dataset contains the electrochemical measurements (CV/EIS) carried out for the consecutive steps of the glassy carbon GC electrode functionalization, in separate subfolders, as described. The cyclic voltammetry (CV) was conducted using a Palmsens 4 potentiostat/galvanostat system (Methrom, Autolab, Netherlands) in the standard three-electrode configuration,...
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Potentiometric Solid-Contact Multisensor System for Simultaneous Measurement of Several Ions
PublicationThe design and performance of potentiometric multisensor system made in solid-contact technology is described. Both, the measuring electrodes as well as the reference electrode are in a compact cell. The system allows for simultaneous measurement of various ions. The characteristics of the electrodes for Na+, K+ and Ca2+ ions were determined using the designed system and compared with ISEs of the same membrane composition in classical...
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Lower rim substituted tert-butyl calix[4]arene (part VII): ionophoric properties of calix[4]arene-crown-6 derivatives in plasticized PVC-membrane electrodes and in solution.
PublicationW pracy przedstawiono syntezę i charakterystykę otrzymanych produktów (2-9), pochodnych p-tert-butylokaliks[4]-korony-6. Zdolności kompleksujące tych związków badano w elektrodach jonoselektywnych, stosując te związki jako jonofory w plastyfikowanej membranie PCW.Wyznaczono wartości stałych trwałości kompleksów z jonami metali I grupy. Stwierdzono, że selektywność kompleksowania zależy od rozmiaru i natury podstawnika wprowadzonego...
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Wykorzystanie membran na etapie ekstrakcji analitów organicznychz ciekłych próbek środowiskowych i płynów biologicznych = Analytical applications of membrane extraction for liquid sample preparation in biomedical and environmental analysis
PublicationPrzedstawiono informacje dotyczące technik ekstrakcji membranowej wykorzystywanych do oznaczania związków organicznych w ciekłych próbkach środowiskowych i biologicznych. Szczególną uwagę zwrócono na podstawy teoretyczne oraz możliwości ich połączenia z technikami oznaczeń końcowych oraz obszarom praktycznego ich wykorzystania.
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Opracowanie potencjometrycznej wieloczujnikowej platformy wykonanej całkowicie w technologii All-Solid-State do jednoczesnego oznaczania kilku jonów w roztworach wodnych
PublicationW pracy przedstawiono charakterystykę i konstrukcje różnych elektrod jonoselektywnych (EJS), a także opisano elektrodę odniesienia i jej funkcję. Przybliżono możliwości zastosowania EJS do monitorowania śladowych ilości ołowiu (II) w otoczeniu kopalni rud cynku i ołowiu, oraz jako biowskaźnik stanu pacjenta w czasie wstrząsu septycznego. Opisano wieloczujnikowe platformy potencjometryczne (WPP) w technologii All-Solid-State (ASS). W...
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Oxygen partial pressure and temperature dependence of Gerischer element of symmetrical porous Sr0.86Ti0.65Fe0.35O3 electrode on CGO substrate
Open Research DataThis dataset contains values of Gericher element at different temperatures (800 °C, 750 °C, 700 °C, 650 °C and 600 °C)and oxygen partial pressures (20%, 10%, 5%, 1%, 0.1% and 0.01% pO2) of symmetrical Sr0.86Ti0.65Fe0.35O3 electrode sintered at 1000 °C. This values were obtained by fitting each measured impedance spectra by electrical equivalent circuit...
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Oxygen partial pressure and temperature dependence of series resistance of symmetrical porous Sr0.86Ti0.65Fe0.35O3 electrode on CGO substrate
Open Research DataThis dataset contains values of series resistance (R) at different temperatures (800 °C, 750 °C, 700 °C, 650 °C and 600 °C) and oxygen partial pressures (20%, 10%, 5%, 1%, 0.1% and 0.01% pO2) of symmetrical Sr0.86Ti0.65Fe0.35O3 electrode sintered at 1000 °C. This values were obtained by fitting each measured impedance spectra by electrical equivalent...
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Oxygen partial pressure and temperature dependence of series resistance of symmetrical porous SrTi0.30Fe0.70O3 electrode on CGO substrate
Open Research DataThis dataset contains values of equivalent circuit element series resistance at different temperatures (800 °C, 700 °C, 600 °C and 500 °C) and oxygen partial pressures (100%, 80%, 50% 30%, 20%, 15%, 10%, 5%, 2.5%, 1%, and 0.3% pO2) of symmetrical SrTi0.30Fe0.70O3 electrode sintered at 800 °C. This values were obtained by fitting each measured impedance...
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High resolution XPS analysis of BDD electrode functionalization steps towards SARS-CoV-2 detection
Open Research DataThis dataset contains the results of the high-resolution XPS analyses of a set of boron-doped diamond (BDD) electrodes after consecutive functionalization steps toward anchoring of a receptor capable of SARS-CoV-2 virus detection. The analysis was carried out in the binding energy range of C1s, N1s, O1s, Ni2p3/2. The measurements were carried out on...
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The Application of 2,6-Bis(4-Methoxybenzoyl)-Diaminopyridine in Solvent Extraction and Polymer Membrane Separation for the Recovery of Au(III), Ag(I), Pd(II) and Pt(II) Ions from Aqueous Solutions
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Oscylacje różnicy potencjału elektrochemicznego między fazami oscylatora z membraną ciekłą zawierającego bromek heksadecylotrimetyloamoniowy.Oscyllations of electrochemical potential difference between phases of liquid membrane oscillator containing heksadecyltrimethylammonium bromide.
PublicationBadano zmiany różnicy potencjału elektrochemicznego między fazami wodnymi oscylatora z membraną ciekłą zawierającego bromek heksadecylotrimetyloamoniowy przy zastosowaniu mikroelektrod Ag/AgCl/Cl. Stwierdzono, iż główny udział do różnicy potencjału elektrochemicznego między fazami wodnymi, wnoszą różnice potencjału między odpowiednią faza wodną i membraną ciekłą. Wartości obliczone z poszczególnych składowych są w bardzo dobrej...
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Metoda pomiarowa dla dwuczęstotliwościowej tomografii elektroimpedancyjnej.
PublicationW referacie przedstawiono technikę pomiaru prądu/napięcia sinusoidalnego zastosowaną w tomografie elektroimpedancyjnym (TEI). Prezentowany TEI, którego konstrukcja bazuje na układzie tzw. elektrody aktywnej, zaliczany jest do grupy systemów równoległo-szeregowych. Układ elektrody aktywnej umieszczony jest bezpośrednio przy elektrodzie. Identyfikacja parametrów mierzonego sygnału przemiennego następuje w układzie elektrody...
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Investigation of electrocatalytic gas sensor properties in presence of chlorine
PublicationIn this paper performance of an electrocatalytic sensor in presence of chlorine is investigated. Presented studies concern sensor prepared in ceramic technology based on NASICON as a solid electrolyte with two round shaped platinum electrodes. Measurements in different temperatures have been performed in order to determine optimal sensor working temperature.
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The electrochemical studies of CB-PLA electrode after surface activation by proteinase K digestion with different times and concentrations
Open Research DataThe dataset contains the electrochemical studies performed to evaluate surface activation of the CB-PLA 3D printed electrodes by enzymatic hydrolysis in a solution containing proteinase K. DIfferent proteinase K concentrations and digestion times were evaluated, as described in subfolder names. The studies were performed before surface activation, during...
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Oxygen partial pressure and temperature dependence of low frequency capacitance of symmetrical porous Sr0.86Ti0.65Fe0.35O3 electrode on CGO substrate
Open Research DataThis dataset contains values of low frequency capacitance at different temperatures (800 °C, 750 °C, 700 °C, 650 °C and 600 °C) and oxygen partial pressures (20%, 10%, 5%, 1%, 0.1% and 0.01% pO2) of symmetrical Sr0.86Ti0.65Fe0.35O3 electrode sintered at 1000 °C. This values were obtained by fitting each measured impedance spectra by electrical equivalent...
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Oxygen partial pressure and temperature dependence of middle frequency capacitance of symmetrical porous Sr0.86Ti0.65Fe0.35O3 electrode on CGO substrate
Open Research DataThis dataset contains values of middle frequency capacitance at different temperatures (800 °C, 750 °C, 700 °C, 650 °C and 600 °C) and oxygen partial pressures (20%, 10%, 5%, 1%, 0.1% and 0.01% pO2) of symmetrical Sr0.86Ti0.65Fe0.35O3 electrode sintered at 1000 °C. This values were obtained by fitting each measured impedance spectra by electrical equivalent...
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Oxygen partial pressure and temperature dependence of low frequency resistance of symmetrical porous Sr0.86Ti0.65Fe0.35O3 electrode on CGO substrate
Open Research DataThis dataset contains values of low frequency resistance at different temperatures (800 °C, 750 °C, 700 °C, 650 °C and 600 °C) and oxygen partial pressures (20%, 10%, 5%, 1%, 0.1% and 0.01% pO2) of symmetrical Sr0.86Ti0.65Fe0.35O3 electrode sintered at 1000 °C. This values were obtained by fitting each measured impedance spectra by electrical equivalent...
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Oxygen partial pressure and temperature dependence of middle frequency resistance of symmetrical porous Sr0.86Ti0.65Fe0.35O3 electrode on CGO substrate
Open Research DataThis dataset contains values of middle frequency resistance at different temperatures (800 °C, 750 °C, 700 °C, 650 °C and 600 °C) and oxygen partial pressures (20%, 10%, 5%, 1%, 0.1% and 0.01% pO2) of symmetrical Sr0.86Ti0.65Fe0.35O3 electrode sintered at 1000 °C. This values were obtained by fitting each measured impedance spectra by electrical equivalent...
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SEM images of symmetrical cell interface with SrTi0.30Fe0.70O3-d electrode and CGO-20 substrate in function of sintering temperature
Open Research DataThis dataset contains images of polished cross section of symmetrical cell interface with SrTi0.30Fe0.70O3-d electrode and CGO-20 substrate in function of sintering temperature (800 °C, 900°C and 1000 °C) . Images were obtained using a PhenomXL (Thermo Fisher Scientific, the Netherlands) scanning electron microscope (SEM) with an accelerating voltage...
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SEM images of symmetrical cell interface with SrTi0.65Fe0.35O3-d electrode and CGO-20 substrate in function of sintering temperature
Open Research DataThis dataset contains images of polished cross section of symmetrical cell interface with SrTi0.65Fe0.35O3-d electrode and CGO-20 substrate in function of sintering temperature (800 °C, 900°C and 1000 °C) . Images were obtained using a PhenomXL (Thermo Fisher Scientific, the Netherlands) scanning electron microscope (SEM) with an accelerating voltage...
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SEM images of symmetrical cell interface with SrTi0.50Fe0.50O3-d electrode and CGO-20 substrate in function of sintering temperature
Open Research DataThis dataset contains images of polished cross section of symmetrical cell interface with SrTi0.50Fe0.50O3-d electrode and CGO-20 substrate in function of sintering temperature (800 °C, 900°C and 1000 °C) . Images were obtained using a PhenomXL (Thermo Fisher Scientific, the Netherlands) scanning electron microscope (SEM) with an accelerating voltage...
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Oxygen partial pressure and temperature dependence of R-CPE1 resistance of symmetrical porous SrTi0.30Fe0.70O3 electrode on CGO substrate
Open Research DataThis dataset contains values of equivalent circuit element R-CPE1 resistance at different temperatures (800 °C, 700 °C, 600 °C and 500 °C) and oxygen partial pressures (100%, 80%, 50% 30%, 20%, 15%, 10%, 5%, 2.5%, 1%, and 0.3% pO2) of symmetrical SrTi0.30Fe0.70O3 electrode sintered at 800 °C. This values were obtained by fitting each measured impedance...
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Oxygen partial pressure and temperature dependence of R-CPE2 frequency of symmetrical porous SrTi0.30Fe0.70O3 electrode on CGO substrate
Open Research DataThis dataset contains values of equivalent circuit element R-CPE2 frequency at different temperatures (800 °C, 700 °C, 600 °C and 500 °C) and oxygen partial pressures (100%, 80%, 50% 30%, 20%, 15%, 10%, 5%, 2.5%, 1%, and 0.3% pO2) of symmetrical SrTi0.30Fe0.70O3 electrode sintered at 800 °C. This values were obtained by fitting each measured impedance...
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Oxygen partial pressure and temperature dependence of R-CPE1 capacity of symmetrical porous SrTi0.30Fe0.70O3 electrode on CGO substrate
Open Research DataThis dataset contains values of equivalent circuit element R-CPE1 capacity at different temperatures (800 °C, 700 °C, 600 °C and 500 °C) and oxygen partial pressures (100%, 80%, 50% 30%, 20%, 15%, 10%, 5%, 2.5%, 1%, and 0.3% pO2) of symmetrical SrTi0.30Fe0.70O3 electrode sintered at 800 °C. This values were obtained by fitting each measured impedance...
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Oxygen partial pressure and temperature dependence of R-CPE1 frequency of symmetrical porous SrTi0.30Fe0.70O3 electrode on CGO substrate
Open Research DataThis dataset contains values of equivalent circuit element R-CPE1 frequency at different temperatures (800 °C, 700 °C, 600 °C and 500 °C) and oxygen partial pressures (100%, 80%, 50% 30%, 20%, 15%, 10%, 5%, 2.5%, 1%, and 0.3% pO2) of symmetrical SrTi0.30Fe0.70O3 electrode sintered at 800 °C. This values were obtained by fitting each measured impedance...
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Oxygen partial pressure and temperature dependence of R-CPE2 resistance of symmetrical porous SrTi0.30Fe0.70O3 electrode on CGO substrate
Open Research DataThis dataset contains values of equivalent circuit element R-CPE2 resistance at different temperatures (800 °C, 700 °C, 600 °C and 500 °C) and oxygen partial pressures (100%, 80%, 50% 30%, 20%, 15%, 10%, 5%, 2.5%, 1%, and 0.3% pO2) of symmetrical SrTi0.30Fe0.70O3 electrode sintered at 800 °C. This values were obtained by fitting each measured impedance...
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Oxygen partial pressure and temperature dependence of R-CPE2 capacity of symmetrical porous SrTi0.30Fe0.70O3 electrode on CGO substrate
Open Research DataThis dataset contains values of equivalent circuit element R-CPE2 capacity at different temperatures (800 °C, 700 °C, 600 °C and 500 °C) and oxygen partial pressures (100%, 80%, 50% 30%, 20%, 15%, 10%, 5%, 2.5%, 1%, and 0.3% pO2) of symmetrical SrTi0.30Fe0.70O3 electrode sintered at 800 °C. This values were obtained by fitting each measured impedance...
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Krzysztof Karwowski dr hab. inż.
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Teatr Improwizacji w Kwadratowej
EventsW Akademickim Klubie Politechniki Gdańskiej odbędzie się kolejny, trzeci już "Teatr Improwizacji"; na scenie wystąpi grupa "Wolne Elektrony".
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Influence of sintering temperature of porous SrTi0.30Fe0.70O3-d oxygen electrode on electrochemical impedance spectroscopy spectra measured at 800 °C
Open Research DataThis dataset contains results electrochemica impedance spectroscopy (EIS) of symmetrical cells with porous SrTi0.30Fe0.70O3-d oxygen electrodes sintered at different temperatures (800 °C; 900 °C and 1000 °C). Measure temperature was 800 °C (syntetic air, 40 ml min-1). Results converted to electrode surfaces area and dived by two electrodes.
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Influence of sintering temperature of porous SrTi0.50Fe0.50O3-d oxygen electrode on electrochemical impedance spectroscopy spectra measured at 800 °C
Open Research DataThis dataset contains results electrochemica impedance spectroscopy (EIS) of symmetrical cells with porous SrTi0.50Fe0.50O3-d oxygen electrodes sintered at different temperatures (800 °C; 900 °C and 1000 °C). Measure temperature was 800 °C (syntetic air, 40 ml min-1). Results converted to electrode surfaces area and dived by two electrodes.
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Influence of sintering temperature of porous SrTi0.65Fe0.35O3-d oxygen electrode on electrochemical impedance spectroscopy spectra measured at 800 °C
Open Research DataThis dataset contains results electrochemica impedance spectroscopy (EIS) of symmetrical cells with porous SrTi0.65Fe0.35O3-d oxygen electrodes sintered at different temperatures (800 °C; 900 °C and 1000 °C). Measure temperature was 800 °C (syntetic air, 40 ml min-1). Results converted to electrode surfaces area and dived by two electrodes.
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Selection of the lambda parameter for DRT analysis of SrTi0.30Fe0.70O3-d oxygen electrode at 800 °C and 1% oxygen partial pressure
Open Research DataThis dataset contains results of selection of the lambda parameter for Distribution of Relaxation Times analysis results for symmetrical cell with porous SrTi0.30Fe0.70O3-d oxygen electrodes sintered at 800 °C. EIS spectra were measured at 800 °C and 1% of oxygen partial pressure. Used lambdas: 5 x 10^(-3), 1 x 10^(-3), 5 x 10^(-4) and 1 x 10^(-4)....
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Pitting corrosion in steel and electrochemical noise intensity
PublicationPrzedstawiono analizę szumu elektrochemicznego, rejestrowanego w obecności korozji wżerowej. Stwierdzono korelację pomiędzy intensywnością szumu a ubytkiem mas elektrod stalowych. Rejestry szumowe rozłożone zostały na składowe częstotliwościowe za pomocą przekształcenia falkowego. Dla pewnych składowych stwierdzono silniejszą korelację z ubytkiem mas korodujących elektrod. Pasmo częstotliwościowe powyższych składowych odpowiada...
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Composite Bioelectrodes Based on Lipidic Cubic Phase with Carbon Nanotube Network
PublicationElektrody z węgla szklistego modyfikowane fazą kubiczną z siecią nanorurek zastosowano do enzymatycznej redukcji tlenu katalizowanej przez lakazę. Zastosowanie nanorurek obniżyło nadpotencjał redukcji tlenu o 0,5 V. W celu zwiększenia gęstości prądu redukcji tlenu zastosowano znany mediator przeniesienia elektronów - ABTS. Mediator adsorbowano na nanorurkach lub wiązano kowalencyjnie z końcami nanorurek. Kowalencyjne związanie...
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Electrooxidation of dissolved dsDNA backed by in situ UV-Vis spectroscopy
PublicationPrzeprowadzono badania elektrochemicznego utleniania dsDNA stosując metody cyklowoltametryczne na elektrodzie weglowej, platynowej, platynowej w formie siatki oraz z siatki platynowej osadzonej na węglu. Otrzymane wyniki analizy spektroelektrochemicznej wykazały, że wraz ze wzrostem potencjału i piku prądowego absorpcja roztworu dsDNA wzrasta w sposób zależny od typu elektrody. Jednak położenie maksimum absorpcji nie zmieniało...
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On aspects of tensile structures analysis.
PublicationW pracy dokonano omówienia podstawowych aspektów analizy konstrukcji napiętych. Przedstawiono krótki rys historyczny tego typu konstrukcji, zwracając uwagę m.in. na konstrukcje membranowe, cięgnowe, pneumatyczne.
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Application of electrochemical impedance spectroscopy to monitoring discharging process of nickel/metal hydride battery.
PublicationThis paper presents the possibility of applying impedance analysis to cell diagnostics. In order to obtain characteristic curves of both electrodes of a NiMH battery simultaneously, a reference electrode was added into the circuit. The authors analysed the cell under three cases, i.e. when its properties are determined only by the state of the positive electrode, only by the state of the negative electrode, or when both electrodes...
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Lower rim substituted tert-butylcalix[4]arenes.Part 8: Calix[4]arenes with dialkoxyphosphoryl functions. Synthesis and complexing properties
PublicationW pracy przedstawiono syntezę i charakterystykę otrzymanych związków (1, 2), pochodnych alkoksyfosforylowych p-tert-butylokaliks[4]arenu: 5,11,17,23-tetra-tert-butylo-25,26,27,28-tetrakis(3-diizopropoksyfosforylopropoksy)kaliks[4]arenu (1) oraz 5,11,17,23-tetra-tert-butylo-25,26,27,28-tetrakis(3-methoksyetoksyfosforylopropoksy)kaliks[4]arenu (2). Zbadano właściwości jonoforowe związków 1 i 2 w membranie elektrod jonoselektywnych,...
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Electrocatalytic sensor based on Nasicon with auxiliary layer = Czujnik elektrokataliczny na bazie Nasiconu z warstwą dodatkową
PublicationW pracy zostały przedstawione wyniki pomiarów czujnika na bazie Nasiconu pracującego w trybie elektrokatalitycznym. Czujniki takie pobudzane są zmieniającym się napięciem przy jednoczesnym pomiarze odpowiedzi prądowej. Przygotowano czujniki ceramiczne o dwóch różnych typów. Pierwszy z nich to czujnik posiadający dwie identyczne elektrody złote, pomiędzy którymi znajduje się elektrolit stały. Drugi czujnik posiada złote elektrody...
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A miniaturized solid-contact potentiometric multisensor platform for determination of ionic profiles in human saliva
PublicationThis paper describes a miniaturized multisensor platform (MP-ISES) consisting of electrodes: a reference one (RE) and ion-selective electrodes (ISEs) for monitoring Na+, K+, Ca2+, Mg2+, Cl−, and SCN− ions and pH in human saliva. Gold electrode surface was modified by deposition of two layers: electrosynthesized PEDOT:PSS forming an intermediate layer, and ion-selective membrane. The developed ISEs were characterized by a wide linear...
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Andreas Haenel dr inż.
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Molecular structure and electrochemical properties of alkyldithiocarbamates.
PublicationZastosowano klasyczne metody elektroanalityczne do badania właściwości redoks ditiokarbaminianów litu w środowisku dimetylosulfotlenku. Użyto elektrody z platyny i węgla szklistego. Badane związki zsyntezowano z N,N'-dimetyloetylenodiaminy, do której podstawiono jedną lub dwie grupy ditiokarbonylowe na drodze reakcji z CS2 w środowisku alkalicznym. Stwierdzono, że elektrochemiczne utlenianie ditiokarbaminianów przebiega z udziałem...
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Hybrid biobateryy based on arylated carbon nanotubes and laccase
PublicationSingle-walled carbon nanotubes (SWCNT) were covalently modified with antracene and antraquinone and used for the construction of cathodes for biocatalytic reduction od dioxygen. The nanotubes with aromatic groups casted onto the electrode increased the working surface of the electrode and enabled efficient direct electron tarnsfer (DET) between the enzyme and the electrode. the aryl groups enter the hydrophobic pocket of the T1...
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Modular impedance tomograph for shallow soil subsurface investigation.
PublicationW pracy przedstawiono konstrukcję i procedury pomiarowe konfigurowalnego systemu pomiarowego. Konstrukcja systemu oparta jest idei tzw. elektrody aktywnej, która zbudowana jest z wykorzystaniem mikrokontrolera ADuC 812.
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Application of the wavelet transformation to estimation of intensity of pitting corrosion
PublicationAnalizie poddane zostały dane szumowe odpowiadające korozji wżerowej. Stwierdzona została korelacja pomiędzy intensywnością rejestrowanego szumu a ubytkiem masy elektrod stalowych. Na bazie przekształcenia falkowego zaproponowany został parametr charakteryzujący zaatakowanie wżerowe. Stwierdzono, że z grupy wytypowanych wskaźników prezentowany parametr wskazuje najlepszą korelację z wielkościami ubytków mas elektrod.