Heavy metal contamination of soil, water and air has caused serious environmental hazard in the biosphere due to rapid industrialization and urbanization. A variety of metal binding ligands such as organic acids and amino acids involve in the heavy metal remediation mechanisms by plants. This paper analyses the possible role of amino acid histidine and organic acids, namely, citric, oxalic and ...

Organic chelators that are thought to be of recent biological origin control copper speciation in seawater. Previous studies have often resolved these copper binding ligands into two classes, class 1 ligands (conditional stability constants 1012–1014 M21) and class 2 ligands (conditional stability constants 109–1012 M21). At present the sources and structures of these chelators are unknown. Pre...

HYPOTHESIS Aqueous citrate-stabilized gold nanoparticles (Au NPs) cannot be directly transferred from water to an immiscible organic solution using short alkyl ligands. However, Au NPs can be transferred from water to a water-organic interface if chemical and mechanical inputs are used to modify the interfacial energy and interfacial area. Ligand exchange can then take place at this interface. ...

The recent development of the chemical speciation of trace metals in seawater is described. The speciation studies reveal that metal ion complexation is one of the most important processes in seawater; especially, most bioactive trace metals, such as Fe(III) and Cu, exist as complexes with ligands in dissolved organic matter. The organic ligands in seawater are characterized with metal ions sel...

The plasticity of the coordination chemistry Lanthanoid ions (LnIII) has allow design novel compounds with slow relaxation magnetization since first Single Ion Magnet (SIMs) was reported by Ishikawa, who used phthalocyaninate ligand to make a “sandwich type” complex. allowed possibility different types molecular complexes SIMs behaviour based on organic ligands. There is also inorganic ligands,...