Glassy carbon electrode modified with ex-in-situ gold film – A simple and effective working electrode for As(III) determination by using differential pulse anodic stripping voltammetry
An easy-to-make new working electrode, an ex-in-situ AuF/GCE, was developed for trace As(III) detection. A gold film electrode prepared ex-situ was re-plated in-situ during each arsenic deposition step by adding Au(III) into the analyte solution. The factors affecting arsenic stripping response, na...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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HUJOS
2021-12-01
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| Series: | Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên |
| Subjects: | |
| Online Access: | http://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/6459 |
| _version_ | 1818137501876879360 |
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| author | Hoang Thai Long Thi Kim Dung Le |
| author_facet | Hoang Thai Long Thi Kim Dung Le |
| author_sort | Hoang Thai Long |
| collection | DOAJ |
| description |
An easy-to-make new working electrode, an ex-in-situ AuF/GCE, was developed for trace As(III) detection. A gold film electrode prepared ex-situ was re-plated in-situ during each arsenic deposition step by adding Au(III) into the analyte solution. The factors affecting arsenic stripping response, namely, gold film preparation conditions, electrolyte concentration, electrode cleaning potential, cleaning time, deposition potential, and deposition time, were investigated. Compared with the traditional gold film electrodes prepared ex-situ, the new electrode has better precision and linearity of arsenic differential pulse anodic stripping voltammetry responses. For a deposition time of 90 s at –200 mV, the new electrode exhibits a sensitivity, a limit of detection (3-Sigma), a limit of quantitation of 0.103 μA·L·μg–1, 0.4 μg·L–1, and 1.3 μg·L–1, respectively.
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| first_indexed | 2024-12-11T09:57:19Z |
| format | Article |
| id | doaj.art-ae53227038a24a159116fe3ea0c70943 |
| institution | Directory Open Access Journal |
| issn | 1859-1388 2615-9678 |
| language | English |
| last_indexed | 2024-12-11T09:57:19Z |
| publishDate | 2021-12-01 |
| publisher | HUJOS |
| record_format | Article |
| series | Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên |
| spelling | doaj.art-ae53227038a24a159116fe3ea0c709432022-12-22T01:12:14ZengHUJOSTạp chí Khoa học Đại học Huế: Khoa học Tự nhiên1859-13882615-96782021-12-011301D10.26459/hueunijns.v130i1D.6459Glassy carbon electrode modified with ex-in-situ gold film – A simple and effective working electrode for As(III) determination by using differential pulse anodic stripping voltammetryHoang Thai Long0Thi Kim Dung Le1University of Sciences, Hue University, 77 Nguyen Hue St., Hue, VietnamUniversity of Medicine and Pharmacy, Hue University, 6 Ngo Quyen St., Hue, Vietnam An easy-to-make new working electrode, an ex-in-situ AuF/GCE, was developed for trace As(III) detection. A gold film electrode prepared ex-situ was re-plated in-situ during each arsenic deposition step by adding Au(III) into the analyte solution. The factors affecting arsenic stripping response, namely, gold film preparation conditions, electrolyte concentration, electrode cleaning potential, cleaning time, deposition potential, and deposition time, were investigated. Compared with the traditional gold film electrodes prepared ex-situ, the new electrode has better precision and linearity of arsenic differential pulse anodic stripping voltammetry responses. For a deposition time of 90 s at –200 mV, the new electrode exhibits a sensitivity, a limit of detection (3-Sigma), a limit of quantitation of 0.103 μA·L·μg–1, 0.4 μg·L–1, and 1.3 μg·L–1, respectively. http://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/6459arsenicAs(III)arsenic determinationanodic stripping voltammetrygold film |
| spellingShingle | Hoang Thai Long Thi Kim Dung Le Glassy carbon electrode modified with ex-in-situ gold film – A simple and effective working electrode for As(III) determination by using differential pulse anodic stripping voltammetry Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên arsenic As(III) arsenic determination anodic stripping voltammetry gold film |
| title | Glassy carbon electrode modified with ex-in-situ gold film – A simple and effective working electrode for As(III) determination by using differential pulse anodic stripping voltammetry |
| title_full | Glassy carbon electrode modified with ex-in-situ gold film – A simple and effective working electrode for As(III) determination by using differential pulse anodic stripping voltammetry |
| title_fullStr | Glassy carbon electrode modified with ex-in-situ gold film – A simple and effective working electrode for As(III) determination by using differential pulse anodic stripping voltammetry |
| title_full_unstemmed | Glassy carbon electrode modified with ex-in-situ gold film – A simple and effective working electrode for As(III) determination by using differential pulse anodic stripping voltammetry |
| title_short | Glassy carbon electrode modified with ex-in-situ gold film – A simple and effective working electrode for As(III) determination by using differential pulse anodic stripping voltammetry |
| title_sort | glassy carbon electrode modified with ex in situ gold film a simple and effective working electrode for as iii determination by using differential pulse anodic stripping voltammetry |
| topic | arsenic As(III) arsenic determination anodic stripping voltammetry gold film |
| url | http://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/6459 |
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