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MAHMOUD, W., ABO ALY, M., HAMZA, M. (2006). NOVEL AND QUICK SENSOR RESPECTIVE FOR SULFATE. Al-Azhar Bulletin of Science, 17(Issue 1-A), 53-63. doi: 10.21608/absb.2006.11639
WAGIHA H. MAHMOUD; MOHAMED M. ABO ALY; MOHAMED S. HAMZA. "NOVEL AND QUICK SENSOR RESPECTIVE FOR SULFATE". Al-Azhar Bulletin of Science, 17, Issue 1-A, 2006, 53-63. doi: 10.21608/absb.2006.11639
MAHMOUD, W., ABO ALY, M., HAMZA, M. (2006). 'NOVEL AND QUICK SENSOR RESPECTIVE FOR SULFATE', Al-Azhar Bulletin of Science, 17(Issue 1-A), pp. 53-63. doi: 10.21608/absb.2006.11639
MAHMOUD, W., ABO ALY, M., HAMZA, M. NOVEL AND QUICK SENSOR RESPECTIVE FOR SULFATE. Al-Azhar Bulletin of Science, 2006; 17(Issue 1-A): 53-63. doi: 10.21608/absb.2006.11639

NOVEL AND QUICK SENSOR RESPECTIVE FOR SULFATE

Article 4, Volume 17, Issue 1-A, June 2006, Page 53-63  XML PDF (343.63 K)
Document Type: Original Article
DOI: 10.21608/absb.2006.11639
Authors
WAGIHA H. MAHMOUD* ; MOHAMED M. ABO ALY; MOHAMED S. HAMZA
Department of Chemistry, faculty of science, Ain Shams University, Cairo , Egypt.
Abstract
A sulfate-selective PVC-membrane sensor based on nickel complex of 3, 8-dimethyl 5, 6-benzo- 4, 7-diazadece-3, 7-diene-2, 9-dione (dioxime) as  (a novel sensing material) is presented. The Potentiometric behavior of the sensor was independent on the pH of the solution between 4.5 and 7.5 pH. The sensor revealed a linear response towards SO42− ion in the range of 5.0×10−7to 1.0×10−2 M with an anionic slope of -30±0.2 mV per decade. The sensor possesses a satisfactory reproducibility, fast response time, low limit of detection (3×10−7M).The interference of hydrophobic inorganic anions was very low in comparison with the conventional ion-exchanger based electrodes, as shown by the selectivity coefficients determined by the separate solution method (SSM). The selectivity was also good towards the most common univalent and divalent anions. The sensor was used as an indicator electrode in potentiometric titration of sulfate with barium ions and in determination of sulfate in some pharmaceutical products .
Keywords
Sulfate ion-selective sensor; 3, 8-dimethyl 5, 6-benzo- 4, 7-diazadece-3, 7-diene-2, 9-dione (dioxime); PVC-membrane; Potentiometry
Main Subjects
Botany; Microbiology; Zoology
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