Research Article
Voltammetry Determination of Pb(II), Cd(II), and Zn(II) at Bismuth Film Electrode Combined with 8-Hydroxyquinoline as a Complexing Agent
Table 5
Pb, Cd, and Zn concentrations in real samples analysed by SqW-AdSV and GF-AAS.
| | Notation | SqW-AdSV | GF-AAS | | Pb (ppb) | Cd (ppb) | Zn (ppb) | Pb (ppb) | Cd (ppb) | Zn (ppb) |
| | Cau Rao River | 15.0 ± 8.2a | 4.3 ± 0.7 | 13.6 ± 4.0 | 16.4 ± 4.7 | 3.9 ± 0.6 | 12.8 ± 3.6 | | Nam Ly Lake | 26.9 ± 5.1 | 5.1 ± 2.4 | 20.3 ± 3.8 | 27.1 ± 2.1 | 4.6 ± 0.3 | 18.3 ± 2.0 | | Kien Giang River | 21.7 ± 4.4 | 3.1 ± 1.5 | 7.3 ± 2.6 | 20.0 ± 5.3 | 3.5 ± 0.7 | 8.9 ± 1.7 |
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aData are expressed as mean ± SD (standard deviation) (n = 3).
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