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Paper Type ![]() |
Contributed Paper |
Title ![]() |
Characterization of a Simple Optical Chemical Sensor for Cu(II) Detection Based on Immobilization of Lipophilized Nitroso-R Reagent in Sol-gel Matrix |
Author ![]() |
Wan Elina Faradilla Wan Khalid* [a], Musa Ahmad [b] and Lee Yook Heng [b] |
Email ![]() |
wan_elina@ns.uitm.edu.my |
Abstract: An optical chemical sensor for Cu(II) ion, based on reflectance measurement of lipophilized nitroso-r (NRS) reagent immobilized in sol-gel matrix has been developed. The reaction between immobilized reagent with Cu(II) occurred at pH 3.0 and gave a linear response to the Cu(II) concentration in the range of 7.87 x 10-5 – 1.57 x 10-3 M with a limit of detection (LOD) of 2.22 x 10-5 M. The sensor showed a good reproducibility with RSD value of 6.3% for 3.15 x 10-4 M Cu(II) and 5.9% for 1.57 x 10-3 M while the response time was fixed at 10 min by using kinetic approach. The sensor could be regenerated with 0.2 M HCl solution. The results obtained for Cu(II) determination in tap water sample were in good agreement with those obtained using atomic absorption spectrometry (AAS).
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Start & End Page ![]() |
383 - 394 |
Received Date ![]() |
2012-06-14 |
Revised Date ![]() |
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Accepted Date ![]() |
2013-04-20 |
Full Text ![]() |
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Keyword ![]() |
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Volume ![]() |
Vol.41 No.2 (APRIL 2014) |
DOI |
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Citation |
[a] W.E.F.W.K., [b] M.A. and [b] L.Y.H., Characterization of a Simple Optical Chemical Sensor for Cu(II) Detection Based on Immobilization of Lipophilized Nitroso-R Reagent in Sol-gel Matrix, Chiang Mai Journal of Science, 2014; 41(2): 383-394. |
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