ChemInform Abstract: INFLUENCE OF PH AND CONCENTRATION OF COMPLEXING AGENTS ON FLUORESCENCE OF SAMARIUM(III), GADOLINIUM(III), AND TERBIUM(III)-ETHYLENEDIAMINETETRAACETIC ACID OR NITRILOTRIACETIC ACID COMPLEXES IN AQUEOUS SOLUTIONS

1983 ◽  
Vol 14 (20) ◽  
Author(s):  
M. ELBANOWSKI ◽  
S. LIS ◽  
B. MAKOWSKA
Keyword(s):  
Aqueous Solutions ◽  
Ethylenediaminetetraacetic Acid ◽  
Nitrilotriacetic Acid ◽  
Complexing Agents ◽  
Influence Of Ph

Comparison of chelating ion exchange resins in sorption of copper(II) and zinc(II) complexes with ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA)

2008 ◽  
Vol 86 (10) ◽  
pp. 958-969 ◽  
Author(s):  
Dorota Kołodyńska ◽  
Zbigniew Hubicki
Keyword(s):  
Heavy Metal ◽  
Functional Groups ◽  
Heavy Metal Ions ◽  
Ethylenediaminetetraacetic Acid ◽  
Ph Value ◽  
Nitrilotriacetic Acid ◽  
Complexing Agents ◽  
Ion Exchange Resins ◽  
Ion Exchangers ◽  
Exchange Resins

This paper investigates the macroporous chelating ion exchangers with different functional groups for their sorption properties towards the copper(II) and zinc(II) ions. The investigations by the dynamic and static methods were carried out in the presence of traditional complexing agents. The differences in affinity of Cu(II) and Zn(II) complexes with these complexones result from the kind of functional groups of the chelating ion exchangers, such as thiourea, aminomethylphosphonate, iminodiacetate, and polyamine groups as well as from the pH value. The quantitative removal of studied heavy metal complexes using chelating ion exchangers is achieved in the case when resins compete successfully for the heavy metal ions against these chelators.Key words: chelating resins, heavy metals, EDTA, NTA.

Recycling of zinc oxide dust using ChCl-urea deep eutectic solvent with nitrilotriacetic acid as complexing agents

2022 ◽  
Vol 175 ◽  
pp. 107295
Author(s):  
Shuxian Wang ◽  
Cunying Xu ◽  
Zhen Lei ◽  
Jianru Li ◽  
Jingling Lu ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Deep Eutectic Solvent ◽  
Nitrilotriacetic Acid ◽  
Complexing Agents

Trace determination of gadolinium by conductivity-based approach

2020 ◽  
Vol 98 (10) ◽  
pp. 652-658
Author(s):  
R. Ananthanarayanan ◽  
M. Sivaramakrishna ◽  
B.S. Panigrahi
Keyword(s):  
Heavy Water ◽  
Ethylenediaminetetraacetic Acid ◽  
Limit Of Detection ◽  
Nuclear Industry ◽  
Complexing Agents ◽  
Complexing Agent ◽  
High Performing ◽  
New Class ◽  
Water Reactors

A conductivity-based technique is developed for the determination of Gd3+ in the heavy water moderators of pressurized heavy water reactors (PHWRs). The method involves monitoring extremely small shifts in conductivity, in the order of few nS/cm, due to the continuous addition of a suitable complexing agent to Gd3+ in aqueous medium. The resulting plot gives two distinct regions with vastly differing slopes. Two multidentate ligands, ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaaceticacid (DTPA), as complexing agents are compared. A high performing conductivity detector based on a new class of sensors called pulsating sensors that works entirely in the digital domain is deployed to monitor the conductivity shifts. Titration plots are studied in both H2O and D2O, and the observed difference between the plots in the two matrices is discussed in detail. Boron did not interfere in the analysis. The method was validated using the UV–vis spectrophotometric technique. The method is sensitive and rapid, as each analysis takes 3 min. The limit of detection in H2O and D2O are 1.27×10−7 mol/L and 5.1×10−7 mol/L, respectively. The precision in analysis lies between 1.9% and 5.3%. This method has important application in the nuclear industry for the routine analysis of gadolinium.

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