Abstract

Shawket Kadhim Jawad¹, Mosa Omran Kadhim¹ and Ebaa Adnan Azooz²

DOI : http://dx.doi.org/10.13005/ojc/330433

By joined two sensitive methods which in onium method and Cloud point extraction method CPE for separation preconcentration and extraction Fe³⁺ andHg²⁺ by using (BAEE) from acidic hydrochloric aqueous solution in the presence TritonX-100. Spectrophotometric studies shows wave length for maximum absorbance to onium species of Fe(III) was λ_max=362nm and for Hg(II) λ_max=293nm. Optimum condition studies was 1M HCl for both ions ,100µg of each metal ions ,using 1×10^-4 M of (BAEE) ,as well as the method need heating for 85⁰C to Fe³⁺ and 95⁰C for Hg²⁺ ion and heating time 15min. for Fe³⁺ and 20min. for Hg²⁺ ion.so that need existance 0.5mL of TritonX-100 for both metal ion ,the research involved many other studies. Thermodynamic data of  Fe³⁺ andHg²⁺ was ΔH_ex=0.195, 0.0592  kJ mol^-1, ΔG_ex=-66.480, -77.981 kJmol^-1, ΔS_ex=186.245, 212.065 Jmol^-1K^-1, respectively ,application and spectrophotometric determination of Fe³⁺ ion andHg²⁺ ion in different samples.

Cloud point extraction; onium system; Nα-Benzoyl-L-arginine ethyl ester hydrochloride (BAEE); mercury; iron

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