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Updated: May 7, 2026

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甲尼达与Cu2+和Zn2+的相互作用:水溶液中的特异性研究和生物活性评估

Federica Carnamucio1,2, Claudia Foti2, Nicola Micale2

  • 1Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia 23284, United States.

ACS omega
|July 8, 2024
PubMed
概括

甲尼达 (MNZ) 与铜 (Cu2+) 的金属复合增强了它对Trypanosoma和大肠杆菌的抗菌作用,而不会增加细胞毒性. 这项研究探讨了MNZ.

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EDTA: Auxiliary Complexing Reagents01:26

EDTA: Auxiliary Complexing Reagents

EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...