Chemical speciation of soil cadmium (Cd) dictates its mobility and potential toxicity in the environment. Our objective was to compare temporal changes in speciation of Cd(II) reacted with samples from six Brazilian soils having varying Cd(II) sorption capacities. Cadmium L-edge X-ray absorption near edge structure (XANES) analysis showed there were short-term changes in speciation after reacti...

An alpha Amyl Cinnamaldehyde Isonicotinoyl Hydrazone (ACINH) is newly synthesised novel chromogenic reagent, ACINH is used for the determination of Cd (II) by a spectrophotometric method. ACINH forms a yellow coloured water soluble [Cd (II)ACINH] complex with Cd (II) in the pH range 9.0. At λmax 380 nm the complexes shows maximum absorbance and at pH range 9.0. Hence further analytical studies ...

The interaction between some heavy metal ions such as of Pb(II), Cd(II) and Cu(II) ions from aqueous solution adsorbed by single walled carbon nanotube (SWCNTs) and carboxylate group functionalized single walled carbon nanotube (SWCNT-COOH) surfaces were studied by atomic absorption spectroscopy. The effect of contact time, pH, initial concentration of ion, ionic strength and temperature on the...

Core-shell silica-coated Fe(0) nanoparticles (Fe@SiO2) were prepared in one-step synthesis by aqueous reduction combined with modified Stöber method. The as-prepared Fe@SiO2 were then used for simultaneous removal of Cr(VI) and Cd(II) from aqueous solution. Batch tests indicated that Fe@SiO2 exhibited high removal capacity toward Cr(VI) and Cd(II). Cr(VI) was removed by Fe@SiO2 through reductio...

This work demonstrated the feasibility of detecting divalent Cd(II) ions using antibody-modified microcantilever (MCL) sensors. Different surface modification methods were compared and multilayer approach was found superior than others for MCL surface modifications for antibody-based Cd(II) sensor development. When the Cd(II)-EDTA complex sample is injected into the fluid cell where the MCL is ...

Background & Aims of the Study: Heavy metals, such as cadmium (Cd(II)), enter into the environment and cause health hazard due to their toxicity and bioaccumulation in the human body. Therefore, they must be removed from water. In recent years, much attention has been focused on the use of material residues as low-cost adsorbents for the removal of heavy metal ions from aqueous...

In this research, the capabilities of Henna and Henna with chitosan microparticles adsorbents were studied in order to remove the ion Cd (II). Response Surface Method (RSM) and Central Composite Design (CCD) were used to minimize the number of experiments (21 runs) for Henna and (26 runs) for the Henna with chitosan microparticles. The parameters were pH (2-9), initial solution concentratio...

In the title compound, [Cd₂I₄(C₆H₁₄N₂)₂](n), there are two independent Cd(II) ions. One Cd(II) ion is coordinated in a slightly distorted octa-hedral coordination environment by four N atoms from two cyclo-hexane-1,2-diamine ligands and two iodido ligands. The other Cd(II) ion is coordinated by four iodido ligands in a slightly distorted tetra-hedral coordination environment. Two of the iodido ...

A new complex of Cd(II) picrate (pic) based on the ligand 2,6-bis(N-methylbenzimidazol-2-yl)pyridine (mbbp) has been synthesized and characterized by elemental analysis, electrical conductivity, 1H NMR, IR and UV/Vis spectral measurements. The crystal structure of the Cd(II) complex, [Cd(mbbp)2](pic)2, has been determined by single-crystal X-ray diffraction. The Cd(II) cation is bonded to two m...