Development of an electrochemical sensor based on aniline, N-phenylglycine, graphene oxide and p-tertbutyl-calix-[4]-arene for trace detection of uranium ion from water.
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| Title: | Development of an electrochemical sensor based on aniline, N-phenylglycine, graphene oxide and p-tertbutyl-calix-[4]-arene for trace detection of uranium ion from water. |
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| Authors: | Dutta, Kusumita1,2 (AUTHOR) kusumitasword@gmail.com, Panda, Siddhartha1,2 (AUTHOR) |
| Source: | Journal of Applied Electrochemistry. Jan2025, Vol. 55 Issue 1, p203-216. 14p. |
| Subjects: | Metal detectors, Square waves, Electrochemical sensors, Graphene oxide, Metal ions, Trace elements, Uranium |
| Abstract: | Selectivity and sensitivity are prime parameters while constructing a sensor. Due to rapid development of nuclear industry, the uranium exploitation has created pollution problems in nature. The naturally occurring uranyl ion U6+ is carcinogenic and toxic in nature posing a significant threat to human health. Therefore, it is necessary to construct a U6+ sensor which is selective as well as sensitive to U6+ and can be useful for measuring U6+ in drinking water. In this work, a novel composite was electrochemically synthesized from aniline, N-phenylglycine, graphene oxide and p-tertbutylcalix[4]arene. Square wave voltammetry experiments to detect U6+ were performed and limit of detection (LOD) of 900 ppt (~ 2.273 nM) was obtained. Interference study was carried out with a large number of test ions (Ru3+, Cs+, As5+, Cr6+, Cu2+, Na+, Mg2+, Al3+, K+, Sr2+, Mn2+, Fe3+, Fe2+, Zn2+) by both peak reduction (PR) technique and barrier width (BW) technique. The conventional technique for interference analysis is PR technique, requires series of experiment to predict interference. BW technique, requiring handful number of experiments, is the one which, for aqueous ion sensor, was introduced for the first time to investigate interference towards the target analyte (Cd2+), in our previous works. In this work, the results obtained from PR technique showed that only Ru3+, Cs+, Cr6+ and Cu2+ interfere U6+. BW technique results support the results obtained by PR technique. The novel sensing material synthesized in this work has been used for the first time for uranyl ion detection with less interference. It has the advantage of easy synthesis procedure requiring no surface modification, leading to a LOD of 4 ppb for U6+ in presence of interfering ions which is far below the permissible limit for U6+ in drinking water. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Selectivity and sensitivity are prime parameters while constructing a sensor. Due to rapid development of nuclear industry, the uranium exploitation has created pollution problems in nature. The naturally occurring uranyl ion U6+ is carcinogenic and toxic in nature posing a significant threat to human health. Therefore, it is necessary to construct a U6+ sensor which is selective as well as sensitive to U6+ and can be useful for measuring U6+ in drinking water. In this work, a novel composite was electrochemically synthesized from aniline, N-phenylglycine, graphene oxide and p-tertbutylcalix[4]arene. Square wave voltammetry experiments to detect U6+ were performed and limit of detection (LOD) of 900 ppt (~ 2.273 nM) was obtained. Interference study was carried out with a large number of test ions (Ru3+, Cs+, As5+, Cr6+, Cu2+, Na+, Mg2+, Al3+, K+, Sr2+, Mn2+, Fe3+, Fe2+, Zn2+) by both peak reduction (PR) technique and barrier width (BW) technique. The conventional technique for interference analysis is PR technique, requires series of experiment to predict interference. BW technique, requiring handful number of experiments, is the one which, for aqueous ion sensor, was introduced for the first time to investigate interference towards the target analyte (Cd2+), in our previous works. In this work, the results obtained from PR technique showed that only Ru3+, Cs+, Cr6+ and Cu2+ interfere U6+. BW technique results support the results obtained by PR technique. The novel sensing material synthesized in this work has been used for the first time for uranyl ion detection with less interference. It has the advantage of easy synthesis procedure requiring no surface modification, leading to a LOD of 4 ppb for U6+ in presence of interfering ions which is far below the permissible limit for U6+ in drinking water. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 0021891X |
| DOI: | 10.1007/s10800-024-02166-0 |
