Determination of Chromium in Natural Water by Adsorptive Stripping Voltammetry Using In Situ Bismuth Film Electrode
Development of adsorptive stripping voltammetry (AdSV) combined with in situ prepared bismuth film electrode (in situ BiFE) on glassy carbon disk surface using diethylenetriamine pentaacetic acid (DTPA) as a complexing agent and NO3− as a catalyst to determine the trace amount of chromium (VI) is de...
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doaj-ea37b521f1dd4a3e9993790c76d1fffc2020-11-25T02:58:01ZengHindawi LimitedJournal of Environmental and Public Health1687-98051687-98132020-01-01202010.1155/2020/13478361347836Determination of Chromium in Natural Water by Adsorptive Stripping Voltammetry Using In Situ Bismuth Film ElectrodeNguyen Thị Hue0Nguyen Van Hop1Hoang Thai Long2Nguyen Hai Phong3Tran Ha Uyen4Le Quoc Hung5Nguyen Nhi Phuong6University of Sciences, Hue University, Hue 530000, VietnamUniversity of Sciences, Hue University, Hue 530000, VietnamUniversity of Sciences, Hue University, Hue 530000, VietnamUniversity of Sciences, Hue University, Hue 530000, VietnamUniversity of Sciences, Hue University, Hue 530000, VietnamInstitute of Chemistry, Vietnam Academy of Science and Technology, Ha Noi 100000, VietnamUniversity of Sciences, Hue University, Hue 530000, VietnamDevelopment of adsorptive stripping voltammetry (AdSV) combined with in situ prepared bismuth film electrode (in situ BiFE) on glassy carbon disk surface using diethylenetriamine pentaacetic acid (DTPA) as a complexing agent and NO3− as a catalyst to determine the trace amount of chromium (VI) is demonstrated. According to this method, in the preconcentration step at Edep = −800 mV, the bismuth film is coated on the surface of glassy carbon electrodes simultaneously with the adsorption of complexes Cr(III)-DTPA. In addition to the influencing factors, the stripping voltammetry performance factors such as deposition potential, deposition time, equilibration time, cleaning potential, cleaning time, and technical parameters of differential pulse and square wave voltammetries have been investigated, and the influence of Cr(III), Co(II), Ni(II), Ca(II), Fe(III), SO42−, Cl−, and Triton X has also been investigated. This method gained good repeatability with RSD <4% (n = 9) for the differential pulse adsorptive stripping voltammetry (DP-AdSV) and RSD < 3% (n = 7) for the square wave adsorptive stripping voltammetry (SqW-AdSV), and low limit of detection: LOD = 12.10−9 M ≈ 0.6 ppb (at a deposition potential (Edep) of −800 mV and the deposition time (tdep) of 50 s) and LOD = 2.10−9 M ≈ 0.1 ppb (at Edep = −800 mV and tdep = 160 s) for the DP-AdSV and SqW-AdSV, respectively. This method has been successfully applied to analyze chromium in natural water.http://dx.doi.org/10.1155/2020/1347836 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nguyen Thị Hue Nguyen Van Hop Hoang Thai Long Nguyen Hai Phong Tran Ha Uyen Le Quoc Hung Nguyen Nhi Phuong |
spellingShingle |
Nguyen Thị Hue Nguyen Van Hop Hoang Thai Long Nguyen Hai Phong Tran Ha Uyen Le Quoc Hung Nguyen Nhi Phuong Determination of Chromium in Natural Water by Adsorptive Stripping Voltammetry Using In Situ Bismuth Film Electrode Journal of Environmental and Public Health |
author_facet |
Nguyen Thị Hue Nguyen Van Hop Hoang Thai Long Nguyen Hai Phong Tran Ha Uyen Le Quoc Hung Nguyen Nhi Phuong |
author_sort |
Nguyen Thị Hue |
title |
Determination of Chromium in Natural Water by Adsorptive Stripping Voltammetry Using In Situ Bismuth Film Electrode |
title_short |
Determination of Chromium in Natural Water by Adsorptive Stripping Voltammetry Using In Situ Bismuth Film Electrode |
title_full |
Determination of Chromium in Natural Water by Adsorptive Stripping Voltammetry Using In Situ Bismuth Film Electrode |
title_fullStr |
Determination of Chromium in Natural Water by Adsorptive Stripping Voltammetry Using In Situ Bismuth Film Electrode |
title_full_unstemmed |
Determination of Chromium in Natural Water by Adsorptive Stripping Voltammetry Using In Situ Bismuth Film Electrode |
title_sort |
determination of chromium in natural water by adsorptive stripping voltammetry using in situ bismuth film electrode |
publisher |
Hindawi Limited |
series |
Journal of Environmental and Public Health |
issn |
1687-9805 1687-9813 |
publishDate |
2020-01-01 |
description |
Development of adsorptive stripping voltammetry (AdSV) combined with in situ prepared bismuth film electrode (in situ BiFE) on glassy carbon disk surface using diethylenetriamine pentaacetic acid (DTPA) as a complexing agent and NO3− as a catalyst to determine the trace amount of chromium (VI) is demonstrated. According to this method, in the preconcentration step at Edep = −800 mV, the bismuth film is coated on the surface of glassy carbon electrodes simultaneously with the adsorption of complexes Cr(III)-DTPA. In addition to the influencing factors, the stripping voltammetry performance factors such as deposition potential, deposition time, equilibration time, cleaning potential, cleaning time, and technical parameters of differential pulse and square wave voltammetries have been investigated, and the influence of Cr(III), Co(II), Ni(II), Ca(II), Fe(III), SO42−, Cl−, and Triton X has also been investigated. This method gained good repeatability with RSD <4% (n = 9) for the differential pulse adsorptive stripping voltammetry (DP-AdSV) and RSD < 3% (n = 7) for the square wave adsorptive stripping voltammetry (SqW-AdSV), and low limit of detection: LOD = 12.10−9 M ≈ 0.6 ppb (at a deposition potential (Edep) of −800 mV and the deposition time (tdep) of 50 s) and LOD = 2.10−9 M ≈ 0.1 ppb (at Edep = −800 mV and tdep = 160 s) for the DP-AdSV and SqW-AdSV, respectively. This method has been successfully applied to analyze chromium in natural water. |
url |
http://dx.doi.org/10.1155/2020/1347836 |
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