Results 221 to 230 of about 178,335 (241)

Structure extension in two Pb(II)–sulfonate complexes from hemidirected to holodirected Pb(II) by secondary Pb–O interactions

Inorganic Chemistry Communications, 2014
Abstract Two novel Pb(II) complexes, [Pb(HL1)(2,2′-bpy)(MeOH)]n, (HL1 = 2-hydroxyl-5-methyl-1,3-disulfonate dianion) (1) and [Pb1.5(OH)(L2)]n, (L2 = 2-hydroxyl-5-nitro-benzenesulfonate dianion) (2), involving ortho-hydroxyl arenesulfonic acids, have been synthesized and characterized for the first time.
Xin Zou, Li-Hua Huo, Zhao-Peng Deng, Hui Zhao, Shan Gao   +4 more
openaire   +1 more source

Hydration Properties of Aqueous Pb(II) Ion

Inorganic Chemistry, 2008
Using density functional theory and polarized continuum models, we have determined the most probable coordination number and structure of the first hydration shell of aqueous Pb(II). The geometries and hydration free energies of Pb(H2O)(1-9)(2+) were examined and benchmarked against experimental values. The free energies of hydration of Pb(H2O)(6-8)(2+)
Matthew C F, Wander, Aurora E, Clark
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Hyperfine-structure measurements on trapped Pb ii

Physical Review A, 1992
The 6${\mathit{P}}_{3/2}$-6${\mathit{P}}_{1/2}$ magnetic dipole resonance transition in ${\mathrm{Pb}}^{+}$ has been observed by cw laser excitation of an ion cloud stored in a Paul trap and subsequent detection of the fluorescence radiation. From the hyperfine-structure splitting of the spectrum we determine the A factor for the ground state, A ...
, Feng, , Li, , Alheit, , Werth
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Methylation of Sn°, Pb° and Sn(II), Pb(II) inorganic salts by carbonium ion donors

Toxicological & Environmental Chemistry, 1993
Methylation experiments of Sn°, Pb° and inorganic salts of Sn(II), Pb(II) by carbonium ion (CH3 +) donors have been carried out in laboratory conditions simulating the natural environment. Lead methylation was observed only in the case of using (CH3)3Sn+I− as methyl‐donor, whereas Sn(IV) methylation could not be detected.
A. Anagnostopoulos, S. Hadjispyrou
openaire   +1 more source

Distribution of Pb(II) species in aqueous solutions

Journal of Colloid and Interface Science, 2003
Turbidity and zeta potential measurements were made on solid precipitates formed after raising the pH of a 10(-3) mol/l lead nitrate aqueous solutions containing 10(-2) mol/l KCl with KOH. Distribution diagrams of Pb(II) species in aqueous solutions at a total Pb(II) concentration of 10(-3) mol/l and 10(-2) mol/l KCl was constructed to explain the ...
Qi, Liu, Yongqiang, Liu
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Mechanism of Pb(II) Biosorption by Saccharomyces Cerevisiae

2009 International Conference on Environmental Science and Information Application Technology, 2009
The mechanism of Pb (II) biosorption by Saccharmyces Cerevisiae is investigated by scanning electron microscopy-energy dispersive x-ray (SEM-EDX) sepectroscopy,fourier transform infrared (FTIR) spectroscopy and x-ray photoelectron spectroscopy (XPS).The SEM figures show that the shapes of Saccharomyces Cerevisiae cells doesn’t obviously change after ...
Limin Dong, Juan Du, Xin Bai, Naili Yu, Chunhui Fan, Ying Zhang   +5 more
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Dual hydrolytic role for Pb(II) ions

Biochimie, 1994
RNA phosphodiester bonds can be cleaved by metal ions, of which Pb2+ is one of the most effective. It can cleave both generally and site-specifically, depending on the substrate and the conditions. In addition, metal ions are also known to cleave ester bonds between amino acid and the 3'-end of transfer RNA.
Otzen, D. E., Barciszewski, J., Clark, B. F.C.   +2 more
openaire   +3 more sources

Spectroscopic and Thermogravimetric Characterization of Pb(II) Dinonyldithiophosphate: Removal of Pb(II) from Aqueous Solution

Journal of Applied Spectroscopy, 2015
Dinonyldithiophosphoric acid (DNDTPA) was prepared by adding phosphorus pentasulfide to nonyl alcohol. The lead dinonyl dithiophosphate complex Pb(DNDTP) 2 was prepared by mixing a solution of lead(II) with a solution of DNDTPA in ethanol at room temperature. The recovered Pb(DNDTP)
H. B. Gümgüm, N. Biricik
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Study of Pb(II) in various H2O-H2SO4 mixtures by differential pulse polarography: solubility of lead sulphate, diffusion coefficient of Pb(II) and half-wave potential of Pb(Hg)/Pb(II)

Electrochimica Acta, 1982
Abstract A study of some properties of Pb(II) in solutions of sulphuric acid was carried out by means of differential pulse polarography. The range of concentrations of acid extended from 0.6 to 70 weight % of H 2 SO 4 (0.06-11.5 M). Determination of the solubility of lead sulphate was found to be in good agreement with NBS's results in the range of
V. Danel, V. Plichon
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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