divalent metal

divalent metal

[dī′vā·lənt ′med·əl]
(chemistry)
A metal whose atoms are each capable of chemically combining with two atoms of hydrogen.
References in periodicals archive ?
LaDuca, Aliphatic and aromatic carboxylate divalent metal coordination polymers incorporating the kinked and hydrogen-bonding capable tethering ligand 4, 4"-dipyridylamine, Coord Chem Rev, 253, 1759 (2009).
Removal of large range of divalent metal ions was carried out using sugar beet pulp as biosorbent material [12] and study revealed very good removal efficiency.
The possible mechanism may be competitive binding to the divalent metal transporter 1 protein, which participates in divalent metal transport (Fe, Cu, Zn, Mn, and Pb) [25].
As the name implies, in enzymes activated by metals, catalysis is triggered by the presence of a mono- or divalent metal ion on the outside of the protein.
The three groups did not differ significantly with regard to cellular HEPH and divalent metal transporter 1 (DMT1) expression.
Volesky, "Ionic strength and electrostatic effects in biosorption of divalent metal ions and protons," Environmental Science & Technology, vol.
Since the elasticity of fracturing fluid may enhance its ability to transport proppants [18, 44, 45], these divalent metal ions need to be shielded when the flowback fluid is recycled and reused.
The lattice structure of LDHs, with the general formula [[[M.sup.2+.sub.1-x][M.sup.3+.sub.x][(OH).sub.2]].sup.x+][([A.sup.n-]).sub.x/n]*y[H.sub.2]O, has a positively charged brucite-shaped layers, consisting of a divalent metal ion [M.sup.2+] (e.g., [Ca.sup.2+], [Zn.sup.2+], [Mg.sup.2+], and [Ni.sup.2+]) octahedrally surrounded by six OH- hydroxyl groups [16-18].
The complexation of pectin with chitosan or the crosslinking of pectin by divalent metal cations such as [Ca.sup.2+] decreases the permeability, solubility, and disintegration extent of the polymer structure but increases the density and mechanical strength of the dosage form [23], thereby delaying the release of the drug.