Wavelet-Based determination of Cu and Pb in water samples using potentiometric stripping analysis with a Lab-Made potentiostat
This paper demonstrates the possibility of simultaneously determining lead and copper in mineral, river and tap water by potentiometric stripping analysis using a low-cost lab-made potentiostat and a wavelet-based signal processing method. Pb(II) and Cu(II) concentrations were found to be in the range 3-7 µg L-1. Relative standard deviations were on average smaller than 3%, which is satisfactory in view of the trace concentration. For comparison, the determination was also carried out by using a high-end commercial equipment (μAutolab Type II, Eco Chemie). The average and standard deviation of the results were similar to those obtained with the lab-made potentiostat. No significant statistical difference was verified according to a paired t-test at a confidence level of 95%.
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Sociedade Brasileira de Química
2009
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oai:scielo:S0103-505320090008000252009-10-30Wavelet-Based determination of Cu and Pb in water samples using potentiometric stripping analysis with a Lab-Made potentiostatMartins,Valdomiro L.Galvão,Roberto K. HarropAraújo,Mário César U. deGaião,Edvaldo da Nóbrega potentiometric stripping analysis wavelet transform lead copper water analysis This paper demonstrates the possibility of simultaneously determining lead and copper in mineral, river and tap water by potentiometric stripping analysis using a low-cost lab-made potentiostat and a wavelet-based signal processing method. Pb(II) and Cu(II) concentrations were found to be in the range 3-7 µg L-1. Relative standard deviations were on average smaller than 3%, which is satisfactory in view of the trace concentration. For comparison, the determination was also carried out by using a high-end commercial equipment (μAutolab Type II, Eco Chemie). The average and standard deviation of the results were similar to those obtained with the lab-made potentiostat. No significant statistical difference was verified according to a paired t-test at a confidence level of 95%.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.20 n.8 20092009-01-01info:eu-repo/semantics/othertext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000800025en10.1590/S0103-50532009000800025 |
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Brasil |
| countrycode |
BR |
| component |
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| databasecode |
rev-scielo-br |
| tag |
revista |
| region |
America del Sur |
| libraryname |
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| language |
English |
| format |
Digital |
| author |
Martins,Valdomiro L. Galvão,Roberto K. Harrop Araújo,Mário César U. de Gaião,Edvaldo da Nóbrega |
| spellingShingle |
Martins,Valdomiro L. Galvão,Roberto K. Harrop Araújo,Mário César U. de Gaião,Edvaldo da Nóbrega Wavelet-Based determination of Cu and Pb in water samples using potentiometric stripping analysis with a Lab-Made potentiostat |
| author_facet |
Martins,Valdomiro L. Galvão,Roberto K. Harrop Araújo,Mário César U. de Gaião,Edvaldo da Nóbrega |
| author_sort |
Martins,Valdomiro L. |
| title |
Wavelet-Based determination of Cu and Pb in water samples using potentiometric stripping analysis with a Lab-Made potentiostat |
| title_short |
Wavelet-Based determination of Cu and Pb in water samples using potentiometric stripping analysis with a Lab-Made potentiostat |
| title_full |
Wavelet-Based determination of Cu and Pb in water samples using potentiometric stripping analysis with a Lab-Made potentiostat |
| title_fullStr |
Wavelet-Based determination of Cu and Pb in water samples using potentiometric stripping analysis with a Lab-Made potentiostat |
| title_full_unstemmed |
Wavelet-Based determination of Cu and Pb in water samples using potentiometric stripping analysis with a Lab-Made potentiostat |
| title_sort |
wavelet-based determination of cu and pb in water samples using potentiometric stripping analysis with a lab-made potentiostat |
| description |
This paper demonstrates the possibility of simultaneously determining lead and copper in mineral, river and tap water by potentiometric stripping analysis using a low-cost lab-made potentiostat and a wavelet-based signal processing method. Pb(II) and Cu(II) concentrations were found to be in the range 3-7 µg L-1. Relative standard deviations were on average smaller than 3%, which is satisfactory in view of the trace concentration. For comparison, the determination was also carried out by using a high-end commercial equipment (μAutolab Type II, Eco Chemie). The average and standard deviation of the results were similar to those obtained with the lab-made potentiostat. No significant statistical difference was verified according to a paired t-test at a confidence level of 95%. |
| publisher |
Sociedade Brasileira de Química |
| publishDate |
2009 |
| url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000800025 |
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