Potentiometric Transducers for the Selective Recognition of Risperidone Based on Molecularly Imprinted Polymer

Iraqi Journal of Pharmaceutical Sciences

ARTICLE

Najwa I. Abdulla¹  Hamsa M.Yaseen¹ 

[1] Department of Chemistry, College of Education for Pure Sciences (Ibn-Al-Haitham), University of Baghdad

关键词: Ion-selective electrodes;    Molecularly imprinted polymer;    PVC membrane coated graphite electrode;    Risperidone.;   

DOI  :  10.31351/vol24iss2pp30-40

学科分类：计算机网络和通讯

来源: College of Pharmacy University of Baghdad

【 摘 要 】

Graphite Coated Electrodes (GCE) based on molecularly imprinted polymers were fabricated for the selective potentiometric determination of Risperidone (Ris). The molecularly imprinted (MIP) and nonimprinted (NIP) polymers were synthesized by bulk polymerization using (Ris.) as a template, acrylic acid (AA) and acrylamide (AAm) as monomers, ethylene glycol dimethacrylate (EGDMA) as a cross-linker and benzoyl peroxide (BPO) as an initiator. The imprinted membranes and the nonimprinted membranes were prepared using dioctyl phthalate (DOP) and Dibutylphthalate (DBP) as plasticizers in PVC matrix. The membranes were coated on graphite electrodes. The MIP electrodes using (AA) and (AAm) showed a near nernstian and nernstian response with slopes of 55.2±0.1 and 59.0±0.2 mV/decade, correlation coefficient (r2 ) 0.9997 and 0.9999, a linear response for a concentration range of (1.0×10-6 - 1.0×10-2 ) M and (5.0x 10-7 to 1.0 x 10-2 ) M respectively. The response time of the prepared electrodes was less than 30 seconds. The electrode responses were stable in a pH range (4-8). The electrodes exhibited good selectivity over a wide range of interference. The most effective electrode (Ris-MIP GCE) was used to determine the concentration of (Ris.) in some pharmaceutical formulations. The electrodes could be successfully used within (7and13) weeks respectively without any drift.

【 授权许可】

CC BY