Development of electrochemical sensor based on silica/gold nanoparticles modified electrode for detection of arsenite
Arsenic is an extremely poison element in earth crust and its contamination in environment is a global hazard. In this study, an efficient electrochemical detection of arsenite [As(III)] has been developed using linear sweep anodic stripping voltammetry (LSASV), based on adsorption of arsenic on the...
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| Format: | Article |
| Language: | English |
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Institute of Electrical and Electronics Engineers
2020
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| Online Access: | http://psasir.upm.edu.my/id/eprint/88432/1/ABSTRACT.pdf |
| _version_ | 1825936517369954304 |
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| author | Ismail, Suhainie Yusof, Nor Azah Abdullah, Jaafar Abdul Rahman, Siti Fatimah |
| author_facet | Ismail, Suhainie Yusof, Nor Azah Abdullah, Jaafar Abdul Rahman, Siti Fatimah |
| author_sort | Ismail, Suhainie |
| collection | UPM |
| description | Arsenic is an extremely poison element in earth crust and its contamination in environment is a global hazard. In this study, an efficient electrochemical detection of arsenite [As(III)] has been developed using linear sweep anodic stripping voltammetry (LSASV), based on adsorption of arsenic on the surface of screen printed carbon electrode modified silica/gold nanoparticles (SiNPs/AuNPs/SPCE). The surface property of modified electrode was characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX) and fourier transform infrared spectroscopy (FTIR). The morphology studies using FESEM showed that the distribution of SiNPs/AuNPs composite is not homogenous therefore resulting in some areas with aggregation on the working electrode surface. Several optimum voltammetric parameters were established such as supporting electrolyte, 1 M HCl; deposition potential, -0.4 V and deposition time, 300 s. Under optimum condition, a linear correlation was obtained in the range of 10 - 100 ppb with limit of detection 5.6 ppb. A variety of common coexistence ions such as Pb 2+ , Ni 2+ , Zn 2+ , Hg 2+ and Cu 2+ in water samples showed no interferences in arsenite detection. The proposed method showed high sensitivity and good reproducibility with a relative standard deviation of 4.52 %, providing potential application of arsenite detection in environment. |
| first_indexed | 2024-03-06T10:45:29Z |
| format | Article |
| id | upm.eprints-88432 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:45:29Z |
| publishDate | 2020 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | upm.eprints-884322021-12-28T06:51:22Z http://psasir.upm.edu.my/id/eprint/88432/ Development of electrochemical sensor based on silica/gold nanoparticles modified electrode for detection of arsenite Ismail, Suhainie Yusof, Nor Azah Abdullah, Jaafar Abdul Rahman, Siti Fatimah Arsenic is an extremely poison element in earth crust and its contamination in environment is a global hazard. In this study, an efficient electrochemical detection of arsenite [As(III)] has been developed using linear sweep anodic stripping voltammetry (LSASV), based on adsorption of arsenic on the surface of screen printed carbon electrode modified silica/gold nanoparticles (SiNPs/AuNPs/SPCE). The surface property of modified electrode was characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX) and fourier transform infrared spectroscopy (FTIR). The morphology studies using FESEM showed that the distribution of SiNPs/AuNPs composite is not homogenous therefore resulting in some areas with aggregation on the working electrode surface. Several optimum voltammetric parameters were established such as supporting electrolyte, 1 M HCl; deposition potential, -0.4 V and deposition time, 300 s. Under optimum condition, a linear correlation was obtained in the range of 10 - 100 ppb with limit of detection 5.6 ppb. A variety of common coexistence ions such as Pb 2+ , Ni 2+ , Zn 2+ , Hg 2+ and Cu 2+ in water samples showed no interferences in arsenite detection. The proposed method showed high sensitivity and good reproducibility with a relative standard deviation of 4.52 %, providing potential application of arsenite detection in environment. Institute of Electrical and Electronics Engineers 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/88432/1/ABSTRACT.pdf Ismail, Suhainie and Yusof, Nor Azah and Abdullah, Jaafar and Abdul Rahman, Siti Fatimah (2020) Development of electrochemical sensor based on silica/gold nanoparticles modified electrode for detection of arsenite. IEEE Sensors Journal, 20 (7). 3406 - 3414. ISSN 1530-437X; ESSN: 1558-1748 https://ieeexplore.ieee.org/document/8902041 10.1109/JSEN.2019.2953799 |
| spellingShingle | Ismail, Suhainie Yusof, Nor Azah Abdullah, Jaafar Abdul Rahman, Siti Fatimah Development of electrochemical sensor based on silica/gold nanoparticles modified electrode for detection of arsenite |
| title | Development of electrochemical sensor based on silica/gold nanoparticles modified electrode for detection of arsenite |
| title_full | Development of electrochemical sensor based on silica/gold nanoparticles modified electrode for detection of arsenite |
| title_fullStr | Development of electrochemical sensor based on silica/gold nanoparticles modified electrode for detection of arsenite |
| title_full_unstemmed | Development of electrochemical sensor based on silica/gold nanoparticles modified electrode for detection of arsenite |
| title_short | Development of electrochemical sensor based on silica/gold nanoparticles modified electrode for detection of arsenite |
| title_sort | development of electrochemical sensor based on silica gold nanoparticles modified electrode for detection of arsenite |
| url | http://psasir.upm.edu.my/id/eprint/88432/1/ABSTRACT.pdf |
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