STUDIES ON FLUORIDE-ZIRCONIUM ALIZARIN RED S REACTION
MASOUD, M., HARFOUSH, A., EL-SARRAF, W., F. EL-SAID, G. (2004). STUDIES ON FLUORIDE-ZIRCONIUM ALIZARIN RED S REACTION. EKB Journal Management System, 1(1), 27-32. doi: 10.21608/esm.2004.467156
M.S. MASOUD; A.A. HARFOUSH; W.M. EL-SARRAF; GH. F. EL-SAID. "STUDIES ON FLUORIDE-ZIRCONIUM ALIZARIN RED S REACTION". EKB Journal Management System, 1, 1, 2004, 27-32. doi: 10.21608/esm.2004.467156
MASOUD, M., HARFOUSH, A., EL-SARRAF, W., F. EL-SAID, G. (2004). 'STUDIES ON FLUORIDE-ZIRCONIUM ALIZARIN RED S REACTION', EKB Journal Management System, 1(1), pp. 27-32. doi: 10.21608/esm.2004.467156
MASOUD, M., HARFOUSH, A., EL-SARRAF, W., F. EL-SAID, G. STUDIES ON FLUORIDE-ZIRCONIUM ALIZARIN RED S REACTION. EKB Journal Management System, 2004; 1(1): 27-32. doi: 10.21608/esm.2004.467156

STUDIES ON FLUORIDE-ZIRCONIUM ALIZARIN RED S REACTION

The Egyptian Science Magazine
Volume 1, Issue 1, December 2004, Pages 27-32    PDF (1.71 M)
Document Type: Original Article
DOI: 10.21608/esm.2004.467156
Authors
M.S. MASOUD* 1; A.A. HARFOUSH* 1; W.M. EL-SARRAF* 2; GH. F. EL-SAID* 2
1Pesticide Chemistry Department, Faculty of Agriculture, Alexandria University
2National Institute of Oceanography and Fisheries, Alexandria, Egypt
Abstract
The stoichiometry of Zirconium-Alizarin red S (Zr-ARS) was determined by different spectrophotometric methods (molar ratio, straight line, continuous variation, slope ratio and limiting logarithmic) at λ = 520 nm. The stoichiometry of (Zr-ARS) complex was 1:1. The pK values were obtained. The straight-line method for Zr-ARS-F complex reaction pointing to the formation of 1:1:1 species. The latter reaction was affected by different factors such as acidity, temperature, time, the content of the blank and the constituents of synthetic seawater. The kinetics of the formation Zr- ARS complex was studied at different temperatures and variable fluoride concentrations. The rate constant, the energy of activation (Ea) and the enthalpy (ΔH) values were calculated.
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