Ebaa A D N A N Azooz | University of Kufa - Iraq (original) (raw)

Papers by Ebaa A D N A N Azooz

Analytical and Bioanalytical Chemistry research , 2022

Cloud Point Extraction (CPE) is an economic, rapid, and environmentally friendly method. It was p... more Cloud Point Extraction (CPE) is an economic, rapid, and environmentally friendly method. It was performed by preconcentration samples (water and soil) that contained palladium. An ion-pair association complex was formed when the chromogenic reagent 2-(4hydroxy phenyl azo)-4-benzene naphthol (HPBN) reacted with palladium in HCl media. It was then extracted into a surfactant (Triton X-114) rich phase. After diluting the cloud point layer with acidic methanol, the concentration of enriched samples was determined by UV-Vis spectroscopy. The effects of Triton X-114 and HCl concentrations, heating time, temperature, centrifuge rate, incubation duration, and interferences on cloud point extraction were analyzed and improved. The short extraction time (8 min) is an advantage of this method. The limit of detection (LOD) and the limit of quantification (LOQ) are low (0.10 and 0.30 μg l-1 , respectively). The enrichment factor (EF) and preconcentration factor (PF) are calculated to be 40 and 100, respectively. The precision for the approach was determined to be (RSD 1.10%, n = 6). For collected samples, the FAAS was used to assess the accuracy of the modified preconcentration technique. The method can be used to detect palladium in natural samples, with relative recovery values ranging from 93 to 109% for various concentrations, demonstrating its accuracy.

In this work, sensitive method was used for the first time by joining cloud point extraction with... more In this work, sensitive method was used for the first time by joining cloud point extraction with solvation system (CPE-SS) using aspirin as the organic reagent to form cloud point layer (CPL). It had a wavelength for final absorbance under λ max = 293 nm. Different kinds and concentrations of salting out with different extraction efficiencies were used to enhance the extraction efficiency. KNO 3 as a salting out under 0.1 M showed maximum extraction efficiency in the presence of 40 µg of Cu(II). The applications of extraction in this method had required the existence of 0.4 mL of Triton X-100 and heating under 85 °C for 20 minutes to form CPL quantitatively. The effect of different surfactants and various organic reagents to investigate the impact of interferences as well as spectrophotometric determination were also investigated in this study. Chicken, breast, cow meat (beef), cucumber, drainage fish, garden cress and lettuce showed low limit of detection (LOD) 0.018 ppm, limit of quantity (LOQ) 0.060 ppm and RSD% of 0.028 in 2 ppm.

separation and extraction of Fe(III) and Hg(II) ions depending up on using four application met... more separation and extraction of Fe(III) and Hg(II) ions depending up on using four application methods as characteristic procedures by incorporation each separation method with cloud point extraction method (CPE).

Liquid ion exchange method as sensitive application of solvent extraction in order to separation ... more Liquid ion exchange method as sensitive application of solvent extraction in order to separation and determination W(V1) as anion WO 4 -2 by use α-Naphthyl amine to formation ion pair association complex, spectrophotometric study shows the wave length for maximum absorbance of ion pair association complex was λ max =289nm, effect of HCl concentration on extraction efficiency of WO -2 demonstrate 0.6M HCL was the optimum concentration of HCL to give higher extraction efficiency in presence 50Mg W(V1)/5ml by using 1x10 -4 M pnaphthyl amine (α-NPA) dissolved in chloroform. The optimum condition for highest extraction W(V1) as WO 4 +2 appear the method of extraction needed shaking time equal to 15 min. the existance of electrolyte in aqueous solution effect to increase the extraction efficiency of W(V1), and this enhancement in extraction efficiency differ with different electrolyte and concentration, thermodynamic study shows extraction method was endothermic and the optimum temperature was 40˚C and thermodynamic data were ∆H ex = 0.1273KJmol -1 ∆G ex = -67.136 KJmol -1 ∆S ex = 214.898 Jmol -1 K -1 , stoichiometry shows the more probable structure of ion pair association complex extracted was [H-PNA] + ; HWO 4 -, the study involved also interferences effect. And spectrophotometric Determination.

Cloud point extraction CPE methodology is wide spread used for applications to separation or Prec... more Cloud point extraction CPE methodology is wide spread used for applications to separation or Preconcentration and extraction of many medic mental or biological compounds as well as organic compounds and several metal ions as negative or positive and neutral complexes for aqueous solutions, as well as this method considers an easy, cheap and important technique and one application of green chemistry with high sensitivity which isn’t use organic solvents. This study is an application for CPE methodology for extraction, separation and preconcentration of magnesium (II), zinc (II) and nickel (II) from aqueous solutions as anions coupled with spectrophotometric method for determination these metals in different vital and environmental samples. And the major thought of this study is to change the metal ion to anion complex in aqueous solutions, and then extracted as ion pair association complexes after combination with large suitable complexing agent and using surfactant as additional phase to extract ion pair association complexes formed and in this study surfactant TritonX-100 was used.

DR.P.R.YADAV, 2020

This paper investigates separation, preconcentration and extraction of Mn (VII) as oxyanion MnO 4... more This paper investigates separation, preconcentration and extraction of Mn (VII) as oxyanion MnO 4-by using laboratory prepared organic reagent 3-[(2-Pyridyl azo)]-1-nitroso-2-naphthol (PANN) as liquid ion exchanger in acidic HCl medium according to Cloud Point Extraction (CPE) methodology. All optimum conditions for extraction have been investigated such as HCl concentration, Mn (VII) concentration, octylpolyethyleneglycol phenyl ether (TritonX-100) volume, PANN concentration, temperature, heating time, as well as interferences, electrolyte salts effect. Stoichiometry investigation clarifies that extracted species was under the status of 1:1 [HPANN + ; MnO 4-]. This method has applied successfully in the determination of Mn (VII) in different samples with Limit of Detection (LOD) of 0.0080 ppm, Limit of Quantity (LOQ) of 0.0260 ppm and Sandell's sensitivity of 72.5× 10-7 µg/cm 2 .

Jour of Adv Research in Dynamical & Control Systems, 2019

Liquid ion exchange method as sensitive application of solvent extraction in order to separation ... more Liquid ion exchange method as sensitive application of solvent extraction in order to separation and determination W(V1) as anion WO 4-2 by use α-Naphthyl amine to formation ion pair association complex, spectrophotometric study shows the wave length for maximum absorbance of ion pair association complex was λ max =289nm, effect of HCl concentration on extraction efficiency of WO-2 demonstrate 0.6M HCL was the optimum concentration of HCL to give higher extraction efficiency in presence 50Mg W(V1)/5ml by using 1x10-4 M p-naphthyl amine (α-NPA) dissolved in chloroform. The optimum condition for highest extraction W(V1) as WO 4 +2 appear the method of extraction needed shaking time equal to 15 min. the existance of electrolyte in aqueous solution effect to increase the extraction efficiency of W(V1), and this enhancement in extraction efficiency differ with different electrolyte and concentration, thermodynamic study shows extraction method was endothermic and the optimum temperature was 40˚C and thermodynamic data were ∆H ex = 0.1273KJmol-1 ∆G ex =-67.136 KJmol-1 ∆S ex = 214.898 Jmol-1 K-1 , stoichiometry shows the more probable structure of ion pair association complex extracted was [H-PNA] + ; HWO 4-, the study involved also interferences effect. And spectrophotometric Determination.

medwell, 2019

By using two approaches Cloud point extraction technology CPE and liquid ion exchange to separate... more By using two approaches Cloud point extraction technology CPE and liquid ion exchange to separate and extracted iron(III) and mercury(II) ions from acidic HCl media as ion pair association complexes by using new laboratory prepared 2-(4-hydroxy phenyl azo)-4-benzene naphthol (HPBN), whereas the spectrophotometric studies show the new organic reagent (HPBN) have a wave length for maximum absorbance was λmax=450nm in addition to FTIR spectrum, the ion pair association complex of Fe3+ λmax=477nm but for Hg2+ λmax=476nm ,so that the optimum condition for high extraction efficiency was 0.5M HCl for both ions ,100µg metal ions in10 mL aqueous solution and 1×10-4M of HPBN and necessary to heating the solution at 900C for 20 min to Fe3+ ion and 15 min. for Hg2+ ion and in presence of 0.5mL TritonX-100 for Fe3+ and 0.8mL TritonX-100 for Hg2+ion. LOD(ppm)=0.0126,0.0770 of Fe3+,Hg2+ ions .LOQ(ppm) =0.0422, 0.259 of Fe3+,Hg2+ions .as well as the research involved other studies such as electrolyte effect, interferences effect, stoichiometry, application and determination of trace amounts of iron(III) and mercury (II) in environmental sample by spectrophotometry.

A new coupled cloud point extraction (CPE) was developed as prompt, easy and economical preconcen... more A new coupled cloud point extraction (CPE) was developed as prompt, easy and economical preconcentration technique for spectrophotometric determination of tiny amounts of Fe 3+ and Hg 2+ in real samples. A modern thiazolylazo ligand [methyl phenyl thiazolyl azo]-3-methyl-4-methoxy-2-naphthol (MPTAN) was done for the CPE method in the preconcentration of Fe 3+ and Hg 2+ as an earlier step to its characterization by UV-VIS spectrophotometry. The analytical manner includes the formation of under study metals complex with new ligand and quantitatively extracted to the Cloud point layer (CPL) of TritonX-100 after heating. The concentration of MPTAN, metals, pH, thermodynamic data and volume of surfactant was optimized. The investigation of stoichiometry has the ratio of metal to ligand of 1:1. Under finest settings and conditions, the calibration curve was found to be linear in the concentration range of two ions (0.05-10) ppm and the limit of detection for Fe 3+ and Hg 2+ are (0.016 and 0.041) ppm respectively. The suggested CPE has an excellent methodology for characterization of trace metal ions in surrounding samples with a complex matrix as in soils, water, vegetable, meats, and fruits.

Absorbance spectrum for ion pair association complex extracted by cloud point extraction (CPE) me... more Absorbance spectrum for ion pair association complex extracted by cloud point extraction (CPE) method
illustrated λmax was (295 nm). 0.5 M hydrochloric acid favorite for conversion metal cation to chloro complex
extracted with 0.25M NaCl and 50Sg Ni2+(8.52×10-5M)by existence 1×10-4 M DB18C6,as well as very necessary
the aqueous solution contain 0.6ML from 1% Triton X-100 ,thermodynamic parameters was
ΔHex=0.2897K.J.mole-1,ΔGex= -63.92 K.J.mole-1, ΔSex =176.86J.mole-1s-1.With suitable time of heating equal to 20
minutes, stoichiometry study shows ion pair complex extracted was 1:1. So this study include application about

Cloud point extraction methodology used as qualified procedure for separation Magnesium (II)as an... more Cloud point extraction methodology used as qualified procedure for separation Magnesium (II)as anion after combination with Oxine as well as for spectrophotometric determination The method involved the formation ion pair association complex between Rhodamin–B⁺ and Oxine anion complex of magnesium [Mg(OX)з‾] in basic media, and this complex extracted to surfactant Triton X-100 at optimum conditions The cloud point layer which is contain ion pair complex extracted mediated with ethanol solvent and spectrophotometrically measured at λ max =648nm ,also by adoption on Eriochrom Black-T method spectrophotometrically determination ,the remaining Mg 2+ in aqueous phase after extraction and calculate distribution ratio D. This study demonstrates all optimum conditions for high efficiency of extraction as well illustrated all factors affect on extraction, in addition to applicable this method.

Extracted Zinc as anion from aqueous solution after formation ion pair association complex by clo... more Extracted Zinc as anion from aqueous solution after formation ion pair association complex by cloud point extraction (CPE) method, as well as absorption spectrum demonstrates λ max =414nm for Zinc complex by using laboratory-made azo dye 3-[(2-Pyridyl azo)]-1-nitroso-2-naphthol (PANN) from acidic media of 1M HCl with 1×10-4 M (PANN), 0.6mL Triton X-100, as well as this research involved many studies about effective parameters on extraction efficiency such as thermodynamic and stoichiometry and others. The proposed method applied successfully for spectrophotometric determination of zinc(II) in different samples, D.L= 0.0292 ppm , ε = 70583 L.mol-1 .cm-1 ,Sandell's Sensitivity = 63× 10-9 µg/cm 2. Introduction Possibly consider cloud point extraction method is an indirect method of extraction involved two phases aqueous phase and surfactant after heating these two phases separated by aggregation micelles to form cloud point layer will high density and small volume, the complex formed for zinc distribute between two phases cloud point layer CPL and aqueous solution according to thermodynamic equilibria with help of kinetic law's and to lean on this theory previous study used CPE methodology for extraction Ni (II) as chloroanion by use crown ether DB18C6 from acidic media of 0.5M HCl in presence of 0.25M NaCl and 0.6mL Triton X-100 as well 1×10

Thesis Chapters by Ebaa A D N A N Azooz

AbSTRACT By joined two sensitive methods which in onium method and Cloud point extraction method ... more AbSTRACT By joined two sensitive methods which in onium method and Cloud point extraction method CPE for separation preconcentration and extraction Fe 3+ and Hg 2+ 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 85 0 C to Fe 3+ and 95 0 C for Hg 2+ ion and heating time 15min. for Fe 3+ and 20min. for Hg 2+ ion. so that need existance 0.5mL of TritonX-100 for both metal ion, the research involved many other studies. Thermodynamic data of Fe 3+ and Hg 2+ was DH ex =0.195, 0.0592 kJ mol-1 , DG ex =-66.480,-77.981 kJmol-1 , DS ex =186.245, 212.065 Jmol-1 K-1 , respectively, application and spectrophotometric determination of Fe 3+ ion and Hg 2+ ion in different samples. keyword: Cloud point extraction, onium system, Na-Benzoyl-L-arginine ethyl ester hydrochloride (BAEE), mercury, iron.

Analytical and Bioanalytical Chemistry research , 2022

DR.P.R.YADAV, 2020

Jour of Adv Research in Dynamical & Control Systems, 2019

Liquid ion exchange method as sensitive application of solvent extraction in order to separation ... more Liquid ion exchange method as sensitive application of solvent extraction in order to separation and determination W(V1) as anion WO 4-2 by use α-Naphthyl amine to formation ion pair association complex, spectrophotometric study shows the wave length for maximum absorbance of ion pair association complex was λ max =289nm, effect of HCl concentration on extraction efficiency of WO-2 demonstrate 0.6M HCL was the optimum concentration of HCL to give higher extraction efficiency in presence 50Mg W(V1)/5ml by using 1x10-4 M p-naphthyl amine (α-NPA) dissolved in chloroform. The optimum condition for highest extraction W(V1) as WO 4 +2 appear the method of extraction needed shaking time equal to 15 min. the existance of electrolyte in aqueous solution effect to increase the extraction efficiency of W(V1), and this enhancement in extraction efficiency differ with different electrolyte and concentration, thermodynamic study shows extraction method was endothermic and the optimum temperature was 40˚C and thermodynamic data were ∆H ex = 0.1273KJmol-1 ∆G ex =-67.136 KJmol-1 ∆S ex = 214.898 Jmol-1 K-1 , stoichiometry shows the more probable structure of ion pair association complex extracted was [H-PNA] + ; HWO 4-, the study involved also interferences effect. And spectrophotometric Determination.

medwell, 2019