Development of Chlorpyrifos Sensor Using Molecularly Imprinted Polymer (MIP) Polyvinyl Alcohol (PVA)-Fe3O4 as Receptor
Development of a chemical sensor to detect chlorpyrifos has been carried out using a molecularly imprinted polymer (MIP) polyvinyl alcohol (PVA)-Fe3O4 as a membrane receptor. The MIP-Fe3O4 receptor is composed of polyvinyl alcohol (PVA) polymer, glutaraldehyde crosslinking reagent, citric acid catal...
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| Autores principales: | , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
University of Brawijaya
2019
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| Materias: | |
| Acceso en línea: | http://dx.doi.org/10.21776/ub.jpacr.2019.008.01.441 https://doaj.org/article/dd837e6db71a49758731a5849faa1919 |
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| Sumario: | Development of a chemical sensor to detect chlorpyrifos has been carried out using a molecularly imprinted polymer (MIP) polyvinyl alcohol (PVA)-Fe3O4 as a membrane receptor. The MIP-Fe3O4 receptor is composed of polyvinyl alcohol (PVA) polymer, glutaraldehyde crosslinking reagent, citric acid catalyst, chlorpyrifos template, and Fe3O4. The MIP-Fe3O4 receptor is coated on the working surface of the screen-printed carbon electrode (SPCE) with a size of 1.5 x 3 mm2. In this study, the effect of adding concentrations of chlorpyrifos and citric acid into membrane receptor was studied. The chlorpyrifos concentrations applied were 0.05, 0.1, 0.5 and 1% (w/w) and the concentrations of citric acid were 9.2, 16.8 and 23.3% (w/w). Sensor performance is also influenced by pH and type of electrolyte. The best sensitivity of the sensor is produced in the concentration range of 10-13 - 10-6 M at 24 mV/decade with a response time of 150 seconds |
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