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Article

Development of Membrane Selective Electrode for Determination of the Antipsychotic Sulpiride in Pharmaceuticals and Urine

by
Mª Soledad García
*,
Joaquín A. Ortuño
,
Mª Isabel Albero
and
Mustafa Salem Abuherba
Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, 30071-Murcia, Spain
*
Author to whom correspondence should be addressed.
Sensors 2009, 9(6), 4309-4322; https://doi.org/10.3390/s90604309
Submission received: 20 April 2009 / Revised: 27 May 2009 / Accepted: 1 June 2009 / Published: 3 June 2009
(This article belongs to the Section Chemical Sensors)

Abstract

The construction and electrochemical response characteristics of a poly(vinyl chloride) (PVC) membrane selective electrode for the determination of sulpiride (SPD) are described. The sensing membrane comprised an ion-exchanger formed between the protonated drug and tetraphenylborate (TPB-) in a plasticized PVC matrix. The influence of membrane composition on the electrode response was studied. The electrode showed a fast, stable and Nernstian response over a sulpiride concentration range (1 × 10-4– 1 × 10-2 M) with a mean slope of 58.4 ± 0.9 mV dec-1 of concentration, a mean detection limit of 4.2 × 10-5 ± 1.2 × 10-5 M, a wide working pH range (2 – 8) and a fast response time (< 15 s). The electrode showed good selectivity towards sulpiride with respect to some inorganic and organic compounds. When the electrode was applied to the determination of sulpiride in pharmaceuticals and human urine, a high percentage of recovery was attained with no need for sample pretreatment procedures because of the lack of interfering matrix effects.
Keywords: ion-selective electrode; sulpiride determination; pharmaceuticals; urine ion-selective electrode; sulpiride determination; pharmaceuticals; urine

Share and Cite

MDPI and ACS Style

García, M.S.; Ortuño, J.A.; Albero, M.I.; Abuherba, M.S. Development of Membrane Selective Electrode for Determination of the Antipsychotic Sulpiride in Pharmaceuticals and Urine. Sensors 2009, 9, 4309-4322. https://doi.org/10.3390/s90604309

AMA Style

García MS, Ortuño JA, Albero MI, Abuherba MS. Development of Membrane Selective Electrode for Determination of the Antipsychotic Sulpiride in Pharmaceuticals and Urine. Sensors. 2009; 9(6):4309-4322. https://doi.org/10.3390/s90604309

Chicago/Turabian Style

García, Mª Soledad, Joaquín A. Ortuño, Mª Isabel Albero, and Mustafa Salem Abuherba. 2009. "Development of Membrane Selective Electrode for Determination of the Antipsychotic Sulpiride in Pharmaceuticals and Urine" Sensors 9, no. 6: 4309-4322. https://doi.org/10.3390/s90604309

APA Style

García, M. S., Ortuño, J. A., Albero, M. I., & Abuherba, M. S. (2009). Development of Membrane Selective Electrode for Determination of the Antipsychotic Sulpiride in Pharmaceuticals and Urine. Sensors, 9(6), 4309-4322. https://doi.org/10.3390/s90604309

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