Authors:M. Kubo, Y. Sakai, T. Tominaga, K. Nishiyama, and K. Nagamine
Diamagnetic muon yields /PD/ in various metal acetylacetonates were measured at room temperature by the muon spin rotation technique. We have found a clear difference in PD between complexes of typical elements and those of transition elements. We suggest that partially filled inner orbitals play some important role in determining the diamagnetic yield in these complexes.
King, L., D. 1988: Retention of metals by several soils of the south-eastern United States. - Journal of Environmental Quality, 17, pp. 239-246.
Retention of metals by several soils of the south-eastern United States
Authors:Marcela Stoia, Mircea Stefanescu, Mirela Barbu, Paul Barvinschi, and Lucian Barbu-Tudoran
In the recent years, research has been carried out on mixed oxides of transition metals, of the type A II B 2 III O 4 with spinel structure, which are active and thermally stable. In addition to this, there is
The dicarboxylic and oxycarboxylic acids known as complexing agents for metal ions under the conditions when the amount of
metal ions exceeds that in metal complexes, act as precipitants for metal ions. The completeness of precipitation, depends
on the kind of metal and organic acid, pH and the concentrations of substances. The abundance of metals in metal finishing
industry enables to use such precipitation for regeneration and decontamination of the complexing agents containing solutions.
Authors:F. J. Caires, L. S. Lima, C. T. Carvalho, A. B. Siqueira, Oswaldo Treu-Filho, and M. Ionashiro
Preparation and investigation of several metal-ion oxamates have been investigated in the solid state using thermoanalytical techniques, X-ray diffractometry, infrared spectroscopy, and so on. The articles published are concerned with the infrared and far
The present overview presents a brief survey on the liquid-liquid extraction mechanism of metal chelates and adducts, the different reported reaction models and the most common methods used to follow the kinetics of extraction process are given. The effect of the different phenomena affecting the extraction rate and the importance of the kinetic information in connection with technical processes and counter-current modelling are also discussed.
A rapid method is described for simultaneous trace determination of metallic impurities in lithium metal by Particle Induced X-ray Emission (PIXE) technique. The impurities were preconcentrated by ion-exchange separation using a weak cation exchanger, Bio Rex-70 and analyzed by 2.34 MeV protons. The reliability of the method was tested by analyzing synthetic samples having several metallic impurities at 1–5 ppm range.
Authors:K. Mészáros Szécsényi, T. Wadsten, A. Kovács, and G. Liptay
Manganese(II) chloride complexes with 3,4- and 3,5-lutidine have been prepared. The crystal symmetry and cell dimensions have
been calculated on the basis of powder diffraction data. The compounds were characterised also by FT-IR spectrometry. The
thermal decomposition of the complexes has been studied by thermogravimetry and DSC. By plotting densities vs. molar mass,
the diagram obtained has correspondence to similar observations in other solid metal-lutidine complex systems.
An RNAA procedure has been developed for measurement of low-level phosphorus in metals. Samples are irradiated at a neutron flux of 2.7·1013 n·cm–2·s–1 then mixed with carrier and dissolved in acid. After chemical separation and purification of the phosphorus and gravimetric determination of carrier yield, 32P is determined using a beta proportional counter. The detection limit for a 0.1 g sample irradiated for 30 minutes is 5 g/kg. The method has been used to determine 6.4±0.6 mg/kg phosphorus in SRM 2175 refractory alloy.