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Quantitative Analysis of Methacycline Hydrochloride by Direct Potentiometry Using the Internal Solid Contact Sensor

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Abstract

An internal solid contact sensor (ISCS) for the determination of methacycline hydrochloride (MC·Cl), Pt/PPy/PVC(MC-PT), is described, based on the use of conducting poly(pyrrole) (PPy) as solid contact material and MC-phosphotungstate (PT) as the ion exchanger and dibutyl phthalate (DBP) as the plasticizer. A direct potentiometric method for the quantitative analysis of MC·Cl is also described. Under the condition of pH 2.7, the linear concentration range, slope (25˚C) and detection limit of the sensor are 6.4 × 1.0-6 - 3.0 × 1.0-3 M, 52.4 ± 0.2 mV/decade and 4.4 × 1.0-6 M, respectively. The response time is >5 s. The determinations of MC·Cl in tablets were carried out by direct potentiometry. The average recovery and relative standard deviation are 100.1 and 0.7% (n = 4), respectively.

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Author notes

  1. Xian Xiang Sun

    Present address: Department of Chemical Engineering, Jiangsu Polytechnic University, Changzhou, 213016, P. R. China

Authors and Affiliations

  1. Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Center (NCR), Dokki, Cairo, 12311, Egypt

    Hassan Y. Aboul-Enein

Authors
  1. Xian Xiang Sun
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  2. Hassan Y. Aboul-Enein
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Sun, X.X., Aboul-Enein, H.Y. Quantitative Analysis of Methacycline Hydrochloride by Direct Potentiometry Using the Internal Solid Contact Sensor. ANAL. SCI. 23, 231–233 (2007). https://doi.org/10.2116/analsci.23.231

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  • DOI: https://doi.org/10.2116/analsci.23.231

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