Determination of Total Mercury in Solid Samples by Anodic Stripping Voltammetry
The anodic stripping voltammetry (ASV) was investigated to determine total mercury in solid samples using a gold electrode. The mercury was deposited on the gold electrode in a preconcentration step. The oxidation peak of mercury was irreversible. The optimal conditions of the procedure were found t...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2021/8888879 |
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| author | Thuong Thi Kim Nguyen Huyen Thu Luu Loi Duc Vu Thao Thi Ta Giang Thi Huong Le |
| author_facet | Thuong Thi Kim Nguyen Huyen Thu Luu Loi Duc Vu Thao Thi Ta Giang Thi Huong Le |
| author_sort | Thuong Thi Kim Nguyen |
| collection | DOAJ |
| description | The anodic stripping voltammetry (ASV) was investigated to determine total mercury in solid samples using a gold electrode. The mercury was deposited on the gold electrode in a preconcentration step. The oxidation peak of mercury was irreversible. The optimal conditions of the procedure were found to be as follows: 0.05 mol L−1 HCl solution, deposition potential −0.5 V vs. Ag/AgCl/KCls, deposition time 40 s, and sweep rate 0.04 V s−1. Under the optimal conditions, the peak current showed a linear dependence on Hg2+ concentration in the range from 0.01 to 0.1 mg l−1. The detection limit and quantification limit were 4.28 µg L−1 and 12.98 µg L−1, respectively. The mean recovery and relative standard deviation were 91.2% and 2.4% (n = 9). The procedure was successfully applied for determining total mercury in samples collected from Hanoi light bulb warehouse—The Rang Dong Light Source and Vacuum Flask JSC. The results were compared with cold vapor atomic absorption spectrometry (CV-AAS). |
| format | Article |
| id | doaj-art-b0f6e04eec664b03ab11d1348da8c936 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
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| series | Journal of Chemistry |
| spelling | doaj-art-b0f6e04eec664b03ab11d1348da8c9362025-02-03T01:28:29ZengWileyJournal of Chemistry2090-90632090-90712021-01-01202110.1155/2021/88888798888879Determination of Total Mercury in Solid Samples by Anodic Stripping VoltammetryThuong Thi Kim Nguyen0Huyen Thu Luu1Loi Duc Vu2Thao Thi Ta3Giang Thi Huong Le4Department of Analytical Chemistry, Faculty of Chemistry, VNU University of Science, 19 Le Thanh Tong Street, Hanoi, VietnamDepartment of Analytical Chemistry, Faculty of Chemistry, VNU University of Science, 19 Le Thanh Tong Street, Hanoi, VietnamInstitute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, VietnamDepartment of Analytical Chemistry, Faculty of Chemistry, VNU University of Science, 19 Le Thanh Tong Street, Hanoi, VietnamDepartment of Analytical Chemistry, Faculty of Chemistry, VNU University of Science, 19 Le Thanh Tong Street, Hanoi, VietnamThe anodic stripping voltammetry (ASV) was investigated to determine total mercury in solid samples using a gold electrode. The mercury was deposited on the gold electrode in a preconcentration step. The oxidation peak of mercury was irreversible. The optimal conditions of the procedure were found to be as follows: 0.05 mol L−1 HCl solution, deposition potential −0.5 V vs. Ag/AgCl/KCls, deposition time 40 s, and sweep rate 0.04 V s−1. Under the optimal conditions, the peak current showed a linear dependence on Hg2+ concentration in the range from 0.01 to 0.1 mg l−1. The detection limit and quantification limit were 4.28 µg L−1 and 12.98 µg L−1, respectively. The mean recovery and relative standard deviation were 91.2% and 2.4% (n = 9). The procedure was successfully applied for determining total mercury in samples collected from Hanoi light bulb warehouse—The Rang Dong Light Source and Vacuum Flask JSC. The results were compared with cold vapor atomic absorption spectrometry (CV-AAS).http://dx.doi.org/10.1155/2021/8888879 |
| spellingShingle | Thuong Thi Kim Nguyen Huyen Thu Luu Loi Duc Vu Thao Thi Ta Giang Thi Huong Le Determination of Total Mercury in Solid Samples by Anodic Stripping Voltammetry Journal of Chemistry |
| title | Determination of Total Mercury in Solid Samples by Anodic Stripping Voltammetry |
| title_full | Determination of Total Mercury in Solid Samples by Anodic Stripping Voltammetry |
| title_fullStr | Determination of Total Mercury in Solid Samples by Anodic Stripping Voltammetry |
| title_full_unstemmed | Determination of Total Mercury in Solid Samples by Anodic Stripping Voltammetry |
| title_short | Determination of Total Mercury in Solid Samples by Anodic Stripping Voltammetry |
| title_sort | determination of total mercury in solid samples by anodic stripping voltammetry |
| url | http://dx.doi.org/10.1155/2021/8888879 |
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