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Research report No. 4/2018 on morphology and electrochemical analysis of the samples provided by HE3DA
Zukalová, Markéta
2019 - Czech
The report contains the results morphology analysis carried out on the provided samples set and their electrochemical evaluation. Zpráva obsahuje výsledky morfologické analýzy provedené na sadě dodaných vzorků a jejich elektrochemické testování.
Keywords:
capacity; surface; electrochemistry; voltammetry
Available at various institutes of the ASCR
Research report No. 4/2018 on morphology and electrochemical analysis of the samples provided by HE3DA
The report contains the results morphology analysis carried out on the provided samples set and their electrochemical evaluation.
Voltammetry at Silica Gel-Modified Carbon Paste Electrode
Šestáková, Ivana; Navrátil, Tomáš
2019 - Czech
Voltammetry using silica gel modified carbon paste electrode (SiO2-CPE) for oxidation of selected flavonoid showed better sensitivity and reproducibility than oxidation using glassy carbon or unmodified carbon paste electrode. Only SiO2-CPE is useful for study of cadmium complexation with cysteine containing ligand as phytochelatin or metallothionein. Voltammetry on boron doped diamond electrode showed only peak of sulfur compound oxidation, which decreased with the addition of cadmium ions. Kompositní uhlíkové elektrody s obsahem silikagelu 1,2 se začaly používat již v 90. letech minulého století, a to ve variantě pevné (s obsahem ceresinu) nebo pastové (s parafinovým olejem). Přítomnost silikagelu v uhlíkové pastě vede ke zlepšené amperometrické detekce látek, které lze na povrchu modifikovaném silikagelem nahromadit, a to jak látek organických, tak iontů kovů 3. Reprodukovatelnost povrchu a tím i vlastního stanovení je nejlépe zabezpečena použitím pastové elektrody se speciálně vyvinutým teflonovým držákem s pohyblivým pístem 4. Možnosti charakterizace uhlíkových pastových elektrod byly dále popsány v přehledném článku 5.\nVlastnosti uhlíkové pasty modifikované silikagelem byly dokumentovány při oxidaci flavonoidů a oxidaci kadmia v přítomnosti cysteinu a fytochelatinu PC2.
Keywords:
flavonoids; cysteine; cadmium; diamond electrode
Available on request at various institutes of the ASCR
Voltammetry at Silica Gel-Modified Carbon Paste Electrode
Voltammetry using silica gel modified carbon paste electrode (SiO2-CPE) for oxidation of selected flavonoid showed better sensitivity and reproducibility than oxidation using glassy carbon or ...
Research report No. 1/2019 on structure and morphology and electrochemical analysis of the samples provided by HE3DA
Zukalová, Markéta
2019 - Czech
The report contains the results of X-ray and morphology analysis carried out on the provided samples set and their electrochemical evaluation. Zpráva obsahuje výsledky rentgenostrukturní a morfologické analýzy provedené na sadě dodaných vzorků a jejich elektrochemické testování.
Keywords:
X-ray analysis; adsorption; voltammetry
Available at various institutes of the ASCR
Research report No. 1/2019 on structure and morphology and electrochemical analysis of the samples provided by HE3DA
The report contains the results of X-ray and morphology analysis carried out on the provided samples set and their electrochemical evaluation.
Research report No. 2/2019 on structure and morphology and chemical/electrochemical analysis of\nthe samples provided by HE3DA
Zukalová, Markéta
2019 - Czech
The report contains the results of X-ray, chemical and morphology analysis carried out on the provided\nsamples set and their electrochemical evaluation. Zpráva obsahuje výsledky rentgenostrukturní, chemické a morfologické analýzy provedené na sadě\ndodaných vzorků a jejich elektrochemické testování.
Keywords:
X-ray analysis; morphology; electrochemistry; adsorption; voltammetry
Available at various institutes of the ASCR
Research report No. 2/2019 on structure and morphology and chemical/electrochemical analysis of\nthe samples provided by HE3DA
The report contains the results of X-ray, chemical and morphology analysis carried out on the provided\nsamples set and their electrochemical evaluation.
Research report No. 3/2018 on structure, morphology and chemical analysis of the samples provided by HE3DA
Zukalová, Markéta
2018 - Czech
The report contains the results of X-ray, morphology and chemical analysis carried out on the provided samples set and their electrochemical testing. Zpráva obsahuje výsledky rentgenostrukturní, morfologické a chemické analýzy provedené na sadě dodaných vzorků a jejich elektrochemické testování.
Keywords:
X-ray analysis; morphology; electrochemistry
Available at various institutes of the ASCR
Research report No. 3/2018 on structure, morphology and chemical analysis of the samples provided by HE3DA
The report contains the results of X-ray, morphology and chemical analysis carried out on the provided samples set and their electrochemical testing.
Research report No. 2/2018 on structure, morphology and electrochemical analysis of the samples provided by HE3DA.
Zukalová, Markéta
2018 - Czech
The report contains the results of X-ray analysis and adsorption measurements carried out on the provided samples set and their electrochemical testing. Zpráva obsahuje výsledky rentgenostrukturní a morfologické analýzy provedené na sadě dodaných vzorků a jejich elektrochemické testování.
Keywords:
morphology; electrochemistry; X-ray analysis
Available at various institutes of the ASCR
Research report No. 2/2018 on structure, morphology and electrochemical analysis of the samples provided by HE3DA.
The report contains the results of X-ray analysis and adsorption measurements carried out on the provided samples set and their electrochemical testing.
Application of a Micro-Volume Voltammetric Cell for Determination of Doxorubicin Hydrochloride
Skalová, Štěpánka; Navrátil, Tomáš; Barek, J.; Vyskočil, V.
2018 - Czech
Doxorubicin is an anticancer drug, which is used for treatment of various cancer types. It contains a quinone structure, similarly as some other drugs belonging to the same category (e.g., daunorubicin and epirubicin). Its monitoring can lead to optimization of individual patient dosages and increase chances for recovery of patients. A micro-volume voltammetric cell and differential pulse cathodic stripping voltammetry have been used for determination of doxorubicin hydrochloride. A volume of used sample was 50 microL. Limit of detection was 0.39 micromol L-1. An applicability of this method was verified on samples of drinking water and of human urine. Byla úspěšně otestována aplikace mikro-objemové voltametrické cely na příkladu stanovení protinádorového léčiva doxorubicinu hydrochloridu. Objem analyzovaného vzorku činil 50 mikroL s LOD 0,39 micromol L-1 a LDR 0,4-10 mikromol L-1. Tato mikro-objemová cela byla také úspěšně použita k analýze tohoto analytu v modelových vzorcích pitné vody a lidské moči.
Keywords:
Doxorubicine hydrochloride; Voltametry; Micro-volume
Available on request at various institutes of the ASCR
Application of a Micro-Volume Voltammetric Cell for Determination of Doxorubicin Hydrochloride
Doxorubicin is an anticancer drug, which is used for treatment of various cancer types. It contains a quinone structure, similarly as some other drugs belonging to the same category (e.g., ...
Behavior of Metallothioneins and Phytochelatins at Mercury and Amalgam Electrodes
Šestáková, Ivana; Navrátil, Tomáš; Josypčuk, Bohdan
2018 - Czech
The presence of cysteine residues in molecules of metallothioneins or phytochelatins is crucial for their electrochemical behavior. At mercury electrodes, the reduction of\ntetracoordinated Cd and Zn in molecule of mamamalian MT is observed in solution of pH 8- 8.5, whereas with lowering pH or at presence of excessive ions, signals of differently coordinated or free metal ions appear. Such changes were confirmed on model complexes with phytochelatin PC2 .Using amalgam electrodes CuSAE or AgSAE for voltammetry of metallothioneins or phytochelatins, their Cu or Ag complexes are formed on the electrode surface, which could be with limitations - employed for the analytical purposes. Při použití elektrod AgSAE či CuSAE pro elektrochemická měření s metalothioneiny či fytochelatiny vznikají příslušné Ag-MT, Cu-MT, Ag-PC či Cu-PC komplexy. V čistých elektrolytech a pro nízké koncentrace analytů jsou odezvy lineárně závislé na jejich koncentraci, odezvu je možné zvýšit akumulací při vhodném potenciálu. Pro reálné vzorky je podstatný negativní vliv matrice, který může vést až k nutnosti přípravy nového povrchu a jeho aktivace pro každý jednotlivý záznam.
Keywords:
metallothioneins; amalgam electrode; voltammetry
Available on request at various institutes of the ASCR
Behavior of Metallothioneins and Phytochelatins at Mercury and Amalgam Electrodes
The presence of cysteine residues in molecules of metallothioneins or phytochelatins is crucial for their electrochemical behavior. At mercury electrodes, the reduction of\ntetracoordinated Cd and Zn ...
Research report on structure and morphology analysis of the samples provided by HE3DA. Calcination procedure and conductive additive concentration optimization
Zukalová, Markéta
2017 - Czech
The report contains the results of X-ray analysis and adsorption measurements on the provided samples. It correlates the results of electrochemical mesurements with the concentration of conductive aditives. Zpráva obsahuje výsledky rentgenostrukturní a adsorpční analýzy dodaných vzorků. Koreluje výsledky elektrochemických měření s koncentrací vodivých aditiv.
Keywords:
X-ray analysis; electrochemistry; sample
Available at various institutes of the ASCR
Research report on structure and morphology analysis of the samples provided by HE3DA. Calcination procedure and conductive additive concentration optimization
The report contains the results of X-ray analysis and adsorption measurements on the provided samples. It correlates the results of electrochemical mesurements with the concentration of conductive ...
Research report on structure and morphology analysis of the samples provided by HE3DA: 1st screening
Zukalová, Markéta
2017 - Czech
The report contains the results of X-ray and morphology analysis carried out on the provided samples set. Zpráva obsahuje výsledky rentgenostrukturní a morfologické analýzy provedené na sadě dodaných vzorků.
Keywords:
X-ray analysis; morphology; sample; adsorption
Available at various institutes of the ASCR
Research report on structure and morphology analysis of the samples provided by HE3DA: 1st screening
The report contains the results of X-ray and morphology analysis carried out on the provided samples set.
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