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Determination of 5-nitroindazole using silver solid amalgam electrode
Authors: Nováková Kateřina | Hrdlička Vojtěch | Navrátil Tomáš | Vyskočil Vlastimil | Barek Jiří
Year: 2015
Type of publication: článek v odborném periodiku
Name of source: Monatshefte fur Chemie
Page from-to: 761-769
Titles:
Language Name Abstract Keywords
cze Stanovení 5-nitroindazole s využitím pevné stříbrné amalgámové elektrody Bylo studováno voltametrické chování 5-nitroindazole na leštěné a na rtuťovým meniskem modifikované stříbrné pevné amalgámové elektrodě pomocí lineární voltametrie a diferenčně pulzní voltametrie. Dosažené výsledky byly porovnány s těmi, které jsme naměřili na rtuťové kapkové elektrodě (HMDE). Navržená metoda byla úspěšně aplikována na reálné vzorky říční vody. 5-Nitroindazole; rtuťová kapková elektroda; stříbrná pevná amalgámová elektroda; nitrolátky
eng Determination of 5-nitroindazole using silver solid amalgam electrode The voltammetric behavior of 5-nitroindazole was investigated at polished (p-AgSAE) and at mercury meniscus-modified (m-AgSAE) silver solid amalgam electrodes (inner diameter 0.5 mm) by direct current voltammetry and by differential pulse voltammetry. The results were compared with those obtained using hanging mercury drop electrode. Optimum conditions for differential pulse voltammetry determination of 5-nitroindazole were found in Britton-Robinson buffer of pH 8. The reaction mechanism was investigated using direct current voltammetry and elimination voltammetry with linear scan. Differential pulse voltammetry with optimized parameters was applied for determination of the compound in model and real samples. The limits of detection were calculated as 0.14 x 10(-6) mol dm(-3) for m-AgSAE and as 0.47 x 10(-6) mol dm(-3) for p-AgSAE. The proposed method was successfully applied for determination of 5-nitroindazole in real samples of river water. 5-Nitroindazole; Hanging mercury drop electrode; Silver sold amalgam electrode; Nitro compounds

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