Extraction and spectrophotometric determination of Copper (II) and Silver (I) by using 2-[Benzothiazolyl azo]-4-benzyl phenol in sediments of Euphrate river,in     Al-Najaf governorate.

J. Abbas, Ghusoon; A.A Khammas, Zuhir; Shawket.K.Jawad,

	Extraction and spectrophotometric determination of Copper (II) and Silver (I) by using 2-[Benzothiazolyl azo]-4-benzyl phenol in sediments of Euphrate river,in Al-Najaf governorate.
journal of al-qadisiyah for pure science(quarterly)
Article 1, Volume 13, Issue 2, 2013, Pages 147-159 PDF (0 K)
Authors
Ghusoon J. Abbas; Zuhir A.A Khammas;
Abstract
Abstract:- Extraction methods for Cu+2 and Ag+ shows optimum pH for extraction was (pHex=7), for Cu+2 and (pHex=8) for Ag+ , as well as extraction procedure need shaking time (20minutes) for Cu+2 and (15minutes) for Ag+, in addition shows optimum concentration giving higher distribution ratio (D) was (80µg) Cu+2 (2.52×10-4 M) and (60µg) Ag+(1.1×10-4 M), organic solvents effect on distribution ratio (D) for extraction shows there is not any linear relation between dielectric constant (ε) for organic solvents used and distribution ratio (D), but there is effect for organic solvent structure for both ion. Stoichiometry shows coordination complex extracted was (1:2) (Metal:Organic reagent) for Cu+2, [Cu2+(BTABP-)2], but for Ag+ was (1:1) (Metal:Organic reagent) [Ag+(BTABP-)], thermodynamic study shows the complexation reaction between metal ion and organic reagent was endothermic for Cu+2 and Ag+ , as well as synergistic effect study. From other hand used this method and organic reagent BTABP for spectrophotometric determination of Cu+2 and Ag+ in sediments of different locations of Euphrates river in Al-Najaf governorate.

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