Synthesis of silica-bound complexing agents containing 2,3-dihydroxybenzoyl and 3,4,5-trihydroxybenzoylamide functional groups and analytical studies of metal uptake

1984 ◽  
Vol 319 (4) ◽  
pp. 403-409 ◽  
Author(s):  
T. Seshadri ◽  
G. Dietz ◽  
H. -J. Haupt
Keyword(s):  
Functional Groups ◽  
Metal Uptake ◽  
Complexing Agents ◽  
Analytical Studies

scholarly journals Spectrophotometric Determination of Some Functional Groups on Chlorella for Evaluation of Their Contribution to Metal Uptake.

2001 ◽  
Vol 17 (6) ◽  
pp. 793-795 ◽  
Author(s):  
Tohru SAITOH ◽  
Nobuhiko NAKAGAKI ◽  
Yoko UCHIDA ◽  
Masataka HIRAIDE ◽  
Chiyo MATSUBARA
Keyword(s):  
Functional Groups ◽  
Spectrophotometric Determination ◽  
Metal Uptake

Role of the Functional Groups of Complexing Agents in Copper Slurries

2006 ◽  
Vol 153 (7) ◽  
pp. G650 ◽  
Author(s):  
Udaya B. Patri ◽  
Serdar Aksu ◽  
S. V. Babu
Keyword(s):  
Functional Groups ◽  
Complexing Agents

scholarly journals Exploring the role of −NH2 functional groups of ethylenediamine in chemical mechanical polishing of GCr15 bearing steel

Friction ◽  
2020 ◽  
Author(s):  
Hanqiang Wu ◽  
Liang Jiang ◽  
Xia Zhong ◽  
Jinwei Liu ◽  
Na Qin ◽  
...  
Keyword(s):  
Functional Groups ◽  
Chemical Mechanical Polishing ◽  
Material Removal ◽  
Bearing Steel ◽  
Mechanical Polishing ◽  
Complexing Agents ◽  
Complexing Agent ◽  
Acidic Ph ◽  
Gcr15 Steel ◽  
Gcr15 Bearing Steel

AbstractEthylenediamine with two −NH2 functional groups was used as a critical complexing agent in chemical mechanical polishing (CMP) slurries for a high carbon chromium GCr15 bearing steel (equivalent to AISI 52100). The polishing performance and corresponding mechanism of −NH2 functional groups were thoroughly investigated as a function of pH. It is revealed that, when polished with ethylenediamine and H2O2-based slurries, the material removal rate (MRR) and surface roughness Ra of GCr15 steel gradually decrease as pH increases. Compared with acidic pH of 4.0, at alkaline pH of 10.0, the surface film of GCr15 steel has much higher corrosion resistance and wear resistance, and thus the material removal caused by the pure corrosion and corrosion-enhanced wear are greatly inhibited, resulting in much lower MRR and Ra. Moreover, it is confirmed that a more protective composite film, consisting of more Fe3+ hydroxides/oxyhydroxides and complex compounds with −NH2 functional groups of ethylenediamine, can be formed at pH of 10.0. Additionally, the polishing performance of pure iron and a medium carbon 45 steel exhibits a similar trend as GCr15 steel. The findings suggest that acidic pH could be feasible for amine groups-based complexing agents to achieve efficient CMP of iron-based metals.

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.

Effect of Functional Groups of Complexing Agents on the Performance of Cu CMP Slurry

2019 ◽  
Vol 25 (38) ◽  
pp. 55-63
Author(s):  
Yung Jun Kim ◽  
Jae Han Bae ◽  
Jae Jeong Kim
Keyword(s):  
Functional Groups ◽  
Complexing Agents ◽  
Cu Cmp

Influences of Lead Contamination and Complexing Agents on the Metal Uptake of Cucumber

1995 ◽  
Vol 51 (1-2) ◽  
pp. 207-213 ◽  
Author(s):  
G. Zaray ◽  
D.D.T. Phuong ◽  
I. Varga ◽  
A. Varga ◽  
T. Kantor ◽  
...  
Keyword(s):  
Metal Uptake ◽  
Lead Contamination ◽  
Complexing Agents
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