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Determination of Atropine in Injection with β-Cyclodextrin Modified Ion Sensitive Field Effect Transistor Sensor
A new atropine drug-FET sensor, which was made of an ISFET (ion sensitive field effect transistor) and a drug sensitive membrane prepared by adding electric active matter to a β-cyclodextrin solution, was developed. The pH influence, selectivity, response curve, reproducibility, stability, response...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Molecular Diversity Preservation International (MDPI)
2005
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3934692/ |
Sumario: | A new atropine drug-FET sensor, which was made of an ISFET (ion sensitive field effect transistor) and a drug sensitive membrane prepared by adding electric active matter to a β-cyclodextrin solution, was developed. The pH influence, selectivity, response curve, reproducibility, stability, response time and life of this sensor were investigated. A preliminary application of the sensor was discussed as well. The experimental results indicated that the sensor showed a Nernst response to atropine with a slope of 58.0 mV/decade over the concentration range of 5.0×10(-3) − 1.0×10(-6) mol/L and the pH range of 5.0−8.5. The sensor detection limit was 8.0×10(-7) mol/L. The performance of this sensor was very stable when it was used to determine atropine concentration in a medicinal injection. The obtained results agreed well with the pharmacopoeia method. |
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