@article { ISI:000255421300007,
	title = {Rapid liquid-liquid extraction of thallium(III) from succinate media with 2-octylaminopyirdine in chloroform as the extractant},
	journal = {Journal of the Serbian Chemical Society},
	volume = {73},
	number = {4},
	year = {2008},
	month = {JAN},
	pages = {435-451},
	publisher = {SERBIAN CHEMICAL SOC},
	address = {KARNEGIJEVA 4, PO BOX 462, YU-11001 BELGRADE, YUGOSLAVIA},
	abstract = {<p>A simple solvent extraction study of thallium(III) was conducted. Selective and quantitative extraction of thallium(III) by 2-octylaminopyridine (2-OAP) in chloroform occurred from aqueous sodium succinate medium (0.0075 M) at pH 3.0. Thallium(III) was back extracted with acetate buffer (pH 4.63). The effect of the concentration of succinate and 2-OAP, the role of various diluents, stripping agents, loading capacity of 2-OAP, equilibrium time and aqueous:organic volume ratio on the extraction of thallium(III) was studied. The stoichiometry of the extracted species was determined based on the slope analysis method and found to be 1: 2: 1 (metal: acid: extractant). The temperature dependence of the extraction equilibrium constant was also examined to estimate the apparent thermodynamic functions Delta H, Delta G and Delta S for the extraction reaction. The method is free from interference of a large number of cations and anions. The method was used for the selective extraction of thallium(III) from its binary mixture with Zn(II), Cd(II), Hg(II), Bi(ill), Pb(II), Se(IV), Te(IV), Sb(III), Ga(III), In(III), AI(III), TI(I) and Fe(III). The proposed method was applied to the synthetic mixtures and alloys. It is simple, selective, rapid and eco-friendly.</p>},
	keywords = {2-OAP, liquid-liquid extraction, succinate media, Temperature effect, thallium(III)},
	issn = {0352-5139},
	doi = {10.2298/JSCO804435M},
	author = {Mahamuni, Sandip V. and Wadgaonkar, Prakash P. and Anuse, Mansing A.}
}
@article { ISI:000281683900009,
	title = {Liquid-liquid extraction and recovery of gallium(III) from acid media with 2-octylaminopyridine in chloroform: analysis of bauxite ore},
	journal = {Journal of the Serbian Chemical Society},
	volume = {75},
	number = {8},
	year = {2010},
	month = {Apr},
	pages = {1099-1113},
	publisher = {SERBIAN CHEMICAL SOC},
	address = {KARNEGIJEVA 4, 11 120 BELGRADE, SERBIA},
	abstract = {<p>The liquid liquid extraction of gallium(III) from hydrochloric acid solution using 2-octylaminopyridine (2-OAP) in chloroform was investigated. The extraction of gallium(III) from 6.0-9.0 mol dm(-3) hydrochloric acid was found to be quantitative using 0.033 mol dm-3 2-OAP in chloroform. The effect of the reagent concentration and other parameters on the extraction of gallium(111) was also studied. The stoichiometry of the extracted species of gallium(In) was determined based on the slope analysis method. The extraction reaction proceeded via the anion exchange mechanism from hydrochloric acid and the extracted species was [RR{\textquoteright}NH(2)(+)GaCl(4)(-)](org). The extraction of gallium(III) was performed in the presence of various ions to ascertain the tolerance limit to individual ions. The temperature dependence of the extraction equilibrium constants was examined to estimate the apparent thermodynamic functions (Delta H, Delta S and Delta G) for the extraction reaction. Gallium(III) was successfully separated from commonly associated metal ions, such as Zn(II), Pb(II), Cd(II), Hg(II), Bi(III), Al(III), Se(IV), Sb(III), Sn(IV), In(III), TI(I) and TI(III). However, gallium(III) was separated from Fe(III) from weak organic acid media. The procedure was also extended to the determination of gallium(III) in bauxite ore by the standard addition method.</p>},
	keywords = {2-OAP, gallium(III), liquid-liquid extraction, recovery of gallium from bauxite},
	issn = {0352-5139},
	doi = {10.2298/JSC090630072M},
	author = {Mahamuni, Sandip V. and Wadgaonkar, Prakash P. and Anuse, Mansing A.}
}
