Results 221 to 230 of about 301,711 (248)

Cd II excitation in slow He+-Cd and He+2-Cd collisions

Applied Physics Letters, 1977
Cross sections for production of excited states of Cd II resulting from He+-Cd and He+2-Cd collisions are reported. These data suggest that high-pressure (∼ atmospheres) operation of a He-Cd laser in which pumping is achieved by charge-transfer excitation with reactant He+2 might be possible.
F. Ranjbar, H. H. Harris, J. J. Leventhal   +2 more
openaire   +1 more source

Cystine-modified biomass for Cd(II) and Pb(II) biosorption

Journal of Hazardous Materials, 2007
The surface of dried biomass of baker's yeast was modified by crosslinking cystine with glutaraldehyde. X-ray photoelectron spectroscopy and microscope were used to characterize the modified biomass. The adsorption capacity of the modified biomass for Cd(2+) and Pb(2+) showed an increase compared with the pristine biomass due to the presence of cystine
Junxia, Yu, Mi, Tong, Xiaomei, Sun, Buhai, Li   +3 more
openaire   +2 more sources

Radiative lifetimes of Cd I and Cd II excited states

SPIE Proceedings, 2004
Radiative lifetimes of 11 levels in Cd I belonging to the 5s5p 1po1 and 5snd 3D1,2(n=6-9) and 5sns 3S1 (n=7,8) series, and of 5 levels of Cd II belonging to the 4d105p 2po1/2,3/2, 4d106s 2S1/2, and 4d105d 2D3/2,5/2 configurations were measured using the time-resolved laser-induced fluorescence technique.
Hongqi Xu, A. Persson, Sune Svanberg, Kiril B. Blagoev, Galina V. Malcheva, Vesselin P. Pentchev, E. Biemont   +6 more
openaire   +1 more source

Selective Separation of Cd(II) Ion from Aqueous Solution by Cd(II)-Imprinted Polymers

2009 3rd International Conference on Bioinformatics and Biomedical Engineering, 2009
Ion-imprinting polymer particles are prepared by copolymerization of methacrylic acid as monomer, ethylene glycol dimethacrylate as crosslinking agent and 2,2'-azo-bis-isobutyronitrile as initiator in the presence of Cd (II). Batch and column procedure are used for the determination of the characteristics of the Cd (II) solid phase extraction.
null Limin Wang, null Gang Xue, null Meihua Zhou, null Yanbo Chen, null Jingchao Yuan   +4 more
openaire   +1 more source

Cd(II) biosorption using Lessonia kelps

Journal of Colloid and Interface Science, 2011
Lessonia kelps (L. trabeculata and L. nigrescens) have been successfully used for the recovery of Cd(II) from near neutral solutions. The biomass was pre-treated with calcium chloride for stabilization of alginate-based compounds. SEM-EDAX analysis and FT-IR spectrometry analysis were used for identifying the modifications of the biomass.
Carmen, Boschi, Holger, Maldonado, Martha, Ly, Eric, Guibal   +3 more
openaire   +2 more sources

Simultaneous Adsorption of Pb(Ii)-Cd(Ii), Pb(Ii)-Phenol, and Cd(Ii)-Phenol by Activated Carbon Cloth in Aqueous Solution

Water, Air, & Soil Pollution, 2014
The aim of the present work was to determine the effect of the simultaneous adsorption of lead(II)-cadmium(II), lead(II)-phenol, and cadmium(II)-phenol by activated carbon cloths (ACCs). Three commercial ACCs were characterized and tested for individual metal adsorption, and competitive adsorption experiments were carried out with the best ACC (AW1104).
Javier A. Arcibar-Orozco, Jose R. Rangel-Mendez, Paola E. Diaz-Flores   +2 more
openaire   +1 more source

A Voltammetric Study of The Cd(II)-Triethylenetetramine System

Journal of Coordination Chemistry, 1990
The composition and stability of complexes formed between Cd(II) and triethylenetetramine (trien) over a wide range of ligand/metal ratio (A) has been studied by polarographic (DC) and cyclic voltammetric (CV) methods. The system has been found to be reversible over the whole metal/ligand range (A = 0-200), and a deformation of the voltammetric curves (
L. Piszczek, A. Ignatowicz
openaire   +1 more source

Effects of Cd(II) and Cu(II) on a Biofilm System

Journal of Environmental Engineering, 1986
There is little information available in the literature to describe the effect of heavy metals on a fixed‐film biological waste treatment system. The primary objective of this study is to evaluate the toxic effect of Cd(II) and Cu(II) on a fixed‐film biological reactor (rotating biological contractor) in treating a sugar waste.
Shoou‐Yuh Chang, Ju‐Chang Huang, Yow‐Chyun Liu   +2 more
openaire   +1 more source

Co-effect of minerals and Cd(II) promoted the formation of bacterial biofilm and consequently enhanced the sorption of Cd(II)

Environmental Pollution, 2020
Heavy metal pollution is very common in soils. Soils are complex systems including minerals, bacteria, and various other substances. In Cd(II) contaminated soil, the combined effects of clay minerals and heavy metals on bacterial biofilm and Cd(II) adsorption are unappreciated. Our study showed that the combination of clay minerals (goethite, kaolinite,
Shaozu, Xu, Yonghui, Xing, Song, Liu, Xuesong, Luo, Wenli, Chen, Qiaoyun, Huang   +5 more
openaire   +2 more sources

??????????????????-????????????-?????????????????????? ???????????????????? Cu (II), Cd (II), Zn (II) ???? Pb (II) ?? ???????????? ???????? ???? ?????????????????? ????????????????????, ???????????????????????????? ??????????????????????????????????????

2022
The sorption of metal ions on silica with covalently grafted propylthioethyleamine groups was studied. Quantitative sorption is observed at ???? 6.5 (Cu), ???? 5.5 (Pb), ???? 7 (Zn and Cd). It was stated that composition of complexes that are formed at the surface is ML (for Zn and Cd) and ML??? (for Cu and Pb). The detection limit obtained by sorption
openaire   +1 more source