Electrochemical characteristic of Biotinyl Somatostatin- 14/Nafion modified gold electrode in development of sensor for determination of Hg(II)
Electrochemical sensor for Hg(II) has been developed using Biotinyl Somatostatin-14 peptide modified gold electrode utilizing nafion as the immobilizing agent. Experimental conditions such as pH, supporting electrolyte and scan rate were optimized. Detection of mercury using Biotinyl Somatostatin-...
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Electrochemical Science Group
2013
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| Online Erişim: | http://psasir.upm.edu.my/id/eprint/30161/1/Electrochemical%20characteristic%20of%20Biotinyl%20Somatostatin.pdf |
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oai:psasir.upm.edu.my:30161 http://psasir.upm.edu.my/id/eprint/30161/ Electrochemical characteristic of Biotinyl Somatostatin- 14/Nafion modified gold electrode in development of sensor for determination of Hg(II) Daud, Nurulhaidah Yusof, Nor Azah Mohd Nor, Siti Mariam Electrochemical sensor for Hg(II) has been developed using Biotinyl Somatostatin-14 peptide modified gold electrode utilizing nafion as the immobilizing agent. Experimental conditions such as pH, supporting electrolyte and scan rate were optimized. Detection of mercury using Biotinyl Somatostatin-14 peptide/Nafion has been observed to be optimum under acidic conditions. Good relative standard deviation of 3.7% has been obtained indicating reliability of the detection system. A linear calibration plot in the range of 40-170 µgL-1 was obtained with sensitivity value of 1×10-10 AµM-1. Limit of detection (LOD) obtained is 0.4 µgL-1 which is below the WHO guidelines for drinking water. The scan rate study showed that the process is a complex surface process, mostly involving an adsorption process. This developed method was applied for determination of Hg(II) in actual waste water samples and a good agreement was obtained between the proposed method and ICP-MS based on the analysis of the waste water samples. Electrochemical Science Group 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/30161/1/Electrochemical%20characteristic%20of%20Biotinyl%20Somatostatin.pdf Daud, Nurulhaidah and Yusof, Nor Azah and Mohd Nor, Siti Mariam (2013) Electrochemical characteristic of Biotinyl Somatostatin- 14/Nafion modified gold electrode in development of sensor for determination of Hg(II). International Journal of Electrochemical Science, 8 (7). pp. 10086-10099. ISSN 1452-3981 http://www.electrochemsci.org/list13.htm#issue7 English |
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English English |
| description |
Electrochemical sensor for Hg(II) has been developed using Biotinyl Somatostatin-14 peptide modified gold electrode utilizing nafion as the immobilizing agent. Experimental conditions such as pH, supporting electrolyte and scan rate were optimized. Detection of mercury using Biotinyl
Somatostatin-14 peptide/Nafion has been observed to be optimum under acidic conditions. Good relative standard deviation of 3.7% has been obtained indicating reliability of the detection system. A linear calibration plot in the range of 40-170 µgL-1 was obtained with sensitivity value of 1×10-10 AµM-1. Limit of detection (LOD) obtained is 0.4 µgL-1 which is below the WHO guidelines for drinking water. The scan rate study showed that the process is a complex surface process, mostly involving an adsorption process. This developed method was applied for determination of Hg(II) in actual waste water samples and a good agreement was obtained between the proposed method and
ICP-MS based on the analysis of the waste water samples.
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| format |
Article |
| author |
Daud, Nurulhaidah Yusof, Nor Azah Mohd Nor, Siti Mariam |
| spellingShingle |
Daud, Nurulhaidah Yusof, Nor Azah Mohd Nor, Siti Mariam Electrochemical characteristic of Biotinyl Somatostatin- 14/Nafion modified gold electrode in development of sensor for determination of Hg(II) |
| author_facet |
Daud, Nurulhaidah Yusof, Nor Azah Mohd Nor, Siti Mariam |
| author_sort |
Daud, Nurulhaidah |
| title |
Electrochemical characteristic of Biotinyl Somatostatin-
14/Nafion modified gold electrode in development of sensor
for determination of Hg(II) |
| title_short |
Electrochemical characteristic of Biotinyl Somatostatin-
14/Nafion modified gold electrode in development of sensor
for determination of Hg(II) |
| title_full |
Electrochemical characteristic of Biotinyl Somatostatin-
14/Nafion modified gold electrode in development of sensor
for determination of Hg(II) |
| title_fullStr |
Electrochemical characteristic of Biotinyl Somatostatin-
14/Nafion modified gold electrode in development of sensor
for determination of Hg(II) |
| title_full_unstemmed |
Electrochemical characteristic of Biotinyl Somatostatin-
14/Nafion modified gold electrode in development of sensor
for determination of Hg(II) |
| title_sort |
electrochemical characteristic of biotinyl somatostatin-
14/nafion modified gold electrode in development of sensor
for determination of hg(ii) |
| publisher |
Electrochemical Science Group |
| publishDate |
2013 |
| url |
http://psasir.upm.edu.my/id/eprint/30161/1/Electrochemical%20characteristic%20of%20Biotinyl%20Somatostatin.pdf |
| _version_ |
1819295296162627584 |
| score |
13.4562235 |