TY - JOUR
T1 - Electrochemical study of 5-nitroquinoline using carbon film electrode and its determination in model samples of drinking and river water
AU - Rumlova, Tereza
AU - Jiranek, Ivan
AU - Vyskocil, Vlastimil
AU - Barek, Jiri
PY - 2016/1/1
Y1 - 2016/1/1
N2 - This work is focused on the determination of submicromolar concentrations of 5-nitroquinoline (5-NQ) using differential pulse voltammetry (DPV) and direct current voltammetry (DCV) at a novel type of carbon film electrode (CFE). The advantages of CFE are its wide potential window in both cathodic and anodic regions (ca 3 V span), high sensitivity, and low noise of measurements. The other advantages of CFE are the possibility to quickly and easily renew the electrode surface and also non-toxicity for environment compared to mercury electrodes. Calibration dependences in deionized water are linear from 0.4 to 100 μmol dm-3, with limit of quantification (LOQ) 1 μmol dm-3 using DCV, and from 0.2 to 100 μmol dm-3, with LOQ 0.4 μmol dm-3 using DPV. The DPV method was verified for model samples of drinking and river water. The calibration dependences were linear in the concentration ranges from 0.2 to 10 μmol dm-3 for both matrices, with LOQ 0.2 μmol dm-3 for drinking water and LOQ 0.6 μmol dm-3 for river water, respectively. This work has proved the usability of CFE for submicromolar determination of 5-NQ based on cathodic reduction of the present nitro group.
AB - This work is focused on the determination of submicromolar concentrations of 5-nitroquinoline (5-NQ) using differential pulse voltammetry (DPV) and direct current voltammetry (DCV) at a novel type of carbon film electrode (CFE). The advantages of CFE are its wide potential window in both cathodic and anodic regions (ca 3 V span), high sensitivity, and low noise of measurements. The other advantages of CFE are the possibility to quickly and easily renew the electrode surface and also non-toxicity for environment compared to mercury electrodes. Calibration dependences in deionized water are linear from 0.4 to 100 μmol dm-3, with limit of quantification (LOQ) 1 μmol dm-3 using DCV, and from 0.2 to 100 μmol dm-3, with LOQ 0.4 μmol dm-3 using DPV. The DPV method was verified for model samples of drinking and river water. The calibration dependences were linear in the concentration ranges from 0.2 to 10 μmol dm-3 for both matrices, with LOQ 0.2 μmol dm-3 for drinking water and LOQ 0.6 μmol dm-3 for river water, respectively. This work has proved the usability of CFE for submicromolar determination of 5-NQ based on cathodic reduction of the present nitro group.
KW - 5-Nitroquinoline
KW - Carbon film electrode
KW - Electrochemistry
KW - Reduction
KW - Voltammetry
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U2 - 10.1007/s00706-015-1573-x
DO - 10.1007/s00706-015-1573-x
M3 - Article
AN - SCOPUS:84952837849
VL - 147
SP - 153
EP - 158
JO - Monatshefte fur Chemie
JF - Monatshefte fur Chemie
SN - 0026-9247
IS - 1
ER -