Bismuth Modified Carbon-Based Electrodes for the Determination of Selected Neonicotinoid Insecticides
Two types of bismuth modified electrodes, a bismuth-film modified glassy carbon (BiF-GCE) and a bismuth bulk modified carbon paste, were applied for the determination of selected nitroguanidine neonicotinoid insecticides. The method based on an ex situ prepared BiF-GCE operated in the differential p...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2011-05-01
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| Series: | Molecules |
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| Online Access: | http://www.mdpi.com/1420-3049/16/6/4451/ |
| _version_ | 1818578863089778688 |
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| author | Marko Rodić Olga Vajdle Valéria Guzsvány Jasmina Zbiljić Zsigmond Papp |
| author_facet | Marko Rodić Olga Vajdle Valéria Guzsvány Jasmina Zbiljić Zsigmond Papp |
| author_sort | Marko Rodić |
| collection | DOAJ |
| description | Two types of bismuth modified electrodes, a bismuth-film modified glassy carbon (BiF-GCE) and a bismuth bulk modified carbon paste, were applied for the determination of selected nitroguanidine neonicotinoid insecticides. The method based on an ex situ prepared BiF-GCE operated in the differential pulse voltammetric (DPV) mode was applied to determine clothianidin in the concentration range from 2.5 to 23 μg cm−3 with a relative standard deviation (RSD) not exceeding 1.5%. The tricresyl phosphate-based carbon paste electrodes (TCP-CPEs), bulk modified with 5 and 20 w/w% of bismuth, showed a different analytical performance in the determination of imidacloprid, regarding the peak shape, potential window, and noise level. The TCP-CPE with 5% Bi was advantageous, and the developed DPV method based on it allowed the determination in the concentration range from 1.7 to 60 μg cm−3 with an RSD of 2.4%. To get a deeper insight into the morphology of the bismuth-based sensor surfaces, scanning electron microscopic measurements were performed of both the surface film and the bulk modified electrodes. |
| first_indexed | 2024-12-16T06:52:34Z |
| format | Article |
| id | doaj.art-468fbb647a424130a4575a63849cdc2f |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-12-16T06:52:34Z |
| publishDate | 2011-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-468fbb647a424130a4575a63849cdc2f2022-12-21T22:40:21ZengMDPI AGMolecules1420-30492011-05-011664451446610.3390/molecules16064451Bismuth Modified Carbon-Based Electrodes for the Determination of Selected Neonicotinoid InsecticidesMarko RodićOlga VajdleValéria GuzsványJasmina ZbiljićZsigmond PappTwo types of bismuth modified electrodes, a bismuth-film modified glassy carbon (BiF-GCE) and a bismuth bulk modified carbon paste, were applied for the determination of selected nitroguanidine neonicotinoid insecticides. The method based on an ex situ prepared BiF-GCE operated in the differential pulse voltammetric (DPV) mode was applied to determine clothianidin in the concentration range from 2.5 to 23 μg cm−3 with a relative standard deviation (RSD) not exceeding 1.5%. The tricresyl phosphate-based carbon paste electrodes (TCP-CPEs), bulk modified with 5 and 20 w/w% of bismuth, showed a different analytical performance in the determination of imidacloprid, regarding the peak shape, potential window, and noise level. The TCP-CPE with 5% Bi was advantageous, and the developed DPV method based on it allowed the determination in the concentration range from 1.7 to 60 μg cm−3 with an RSD of 2.4%. To get a deeper insight into the morphology of the bismuth-based sensor surfaces, scanning electron microscopic measurements were performed of both the surface film and the bulk modified electrodes.http://www.mdpi.com/1420-3049/16/6/4451/bismuth modified electrodesvoltammetryneonicotinoidsclothianidinimidacloprid |
| spellingShingle | Marko Rodić Olga Vajdle Valéria Guzsvány Jasmina Zbiljić Zsigmond Papp Bismuth Modified Carbon-Based Electrodes for the Determination of Selected Neonicotinoid Insecticides Molecules bismuth modified electrodes voltammetry neonicotinoids clothianidin imidacloprid |
| title | Bismuth Modified Carbon-Based Electrodes for the Determination of Selected Neonicotinoid Insecticides |
| title_full | Bismuth Modified Carbon-Based Electrodes for the Determination of Selected Neonicotinoid Insecticides |
| title_fullStr | Bismuth Modified Carbon-Based Electrodes for the Determination of Selected Neonicotinoid Insecticides |
| title_full_unstemmed | Bismuth Modified Carbon-Based Electrodes for the Determination of Selected Neonicotinoid Insecticides |
| title_short | Bismuth Modified Carbon-Based Electrodes for the Determination of Selected Neonicotinoid Insecticides |
| title_sort | bismuth modified carbon based electrodes for the determination of selected neonicotinoid insecticides |
| topic | bismuth modified electrodes voltammetry neonicotinoids clothianidin imidacloprid |
| url | http://www.mdpi.com/1420-3049/16/6/4451/ |
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