8/12/2023 0 Comments Copper isotope with 34 neutronsIn the tubular reactor process of copper reduction by hydrogen is going on in three phases: gas-liquid-solig phase. According to the distribution of time of stay, by the moments method, number of powers of ideal intermixings in the cell model of flow of the both phases. Measurements of the radiation intensities were registered by scintillation counters, working with a single-channel amplitude analyzer, integrators and counting rate monitors. The copper concentrate was labelled by sorbed colloidal gold-198 and the liquid phase was labelled by solution of sodium chloride containing sodium-24. The column leaching installation has been tested by pulse injection of two radioisotope indicators simultaneously. Isotope methods have been presented of investigations of hydrodynamics of liquid and solid phases in pilot-scale installations for hydrometallurgic processing of copper concentrates: in the column installation for leaching in the tubular reactor for copper reduction by hydrogen and in the installation for crystallization of magnesium sulphate under pressure conditions. International Nuclear Information System (INIS) Isotopic methods of investigations of hydrodynamics in installations for hydrometallurgic processing of copper concentrates These results indicate that a range of processes are likely to fractionate stable Cu isotopes in seawater. A minima in the Cu isotopic profile correlates with the chlorophyll a maximum at the site. A deep-sea profile measured in the oligotrophic north Tasman Sea shows fractionation in the Cu isotopic signature in the photic zone but is relatively homogenised at depth. This straightforward technique is high yielding and fractionation free for Cu and allows precise measurement of the seawater Cu isotopic composition using multi-collector inductively coupled plasma mass-spectrometry. This was followed by Cu-purification using anion-exchange. In this work, sample preparation for isotopic analysis employed solvent-extraction with amino pyrollidine dithiocarbamate/diethyl dithiocarbamate (APDC/DDC), coupled with a nitric acid back-extraction, to concentrate Cu from seawater. Abstract: Stable copper (Cu) isotope geochemistry provides a new perspective for investigating and understanding Cu speciation and biogeochemical Cu cycling in seawater. The collaboration aims to obtain detailed nuclear spectroscopy information on isotopes close to the magic proton number Z=28 Very neutron-rich and neutron-deficient copper isotopes are ionized with the ISOLDE resonance ionization laser ion source (RILIS) to provide beams with low cross contamination.\ \On the neutron-deficient side the high $Q_eta$-values of $^Cu may be linked to marine biological activity. La commara, M Roeckl, E Van duppen, P L E Schmidt, K A Lettry, J Nuclear Spectroscopy with Copper Isotopes of Extreme N/Z Ratios
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