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Numerous medical studies have shown that magnesium has a remarkable significance for the human physiology. Thus, the possibility of using two magnesium-rich natural waters from Serbia as magnesium supplements and the hydrogeological features of these occurrences are presented through the results of SEM–EDS and XPRD analyses of water dry residues an...
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Chengde City boasts a wealth of high-quality mineral water resources characterized by a high level of strontium (Sr), a low level of sodium, and low alkalinity. In order to study the mechanism of formation of Sr-bearing mineral water in Chengde and to scientifically guide future mineral water exploration, taking three typical mineral water exploration areas in Chengde as examples, this paper studies the sources of Sr in mineral water and the general rules of its dissolution via a laboratory static leaching experiment and impact experiments, and it provides an analysis of the characteristics of typical rock samples. The research results indicate that the content of Sr in surrounding rock and the characteristics of minerals existing in surrounding rock jointly control the dissolution of Sr in water; that CO2 can promote the formation of mineral water containing Sr; and that temperature increases may boost the dissolution of Sr from carbonate minerals but also inhibit the dissolution of Sr from silicate minerals.
In this study, a new method was developed for the separation and isolation of radium from metallic copper. Radium was separated from matrix constituents and possible impurities using an AG50Wx8 cationic resin and a series of specific-pH eluants containing complexing ligands. An instrumental detection limit of 2 mBq∙L-1 (53 fg∙L-1) and a quantification limit of 6 mBq∙L-1 (175 fg∙L-1) were achieved when the separation method was coupled with an ICP-MS. The limits of detection and quantification for the new method translate into 0.3 µBq∙g-1 (9 ag∙g-1) and 1 µBq∙g-1 (28 ag∙g-1), respectively, for a 100 g sample treated by leaching. This method can be used to measure radium content at the ultratrace level in copper to be used in the fabrication of sensitive radiation detectors.
Geothermal, that is, hydrogeothermal energy is an important resource that can contribute to the energy independence of the state. In the conditions of the modern energy crisis, renewable natural resources based on hydrogeothermal potential are invaluable. The municipality of Bogatić, as part of Mačva, is one of the most promising hydrogeothermal sites in Europe. The main reservoir of low mineralization geothermal waters consists of karstic Triassic limestone and dolomite. In the main reservoir, it is realistic to expect water temperatures up to 100°C which can be used for heating purposes, in agriculture and aquaculture, industry, for balneotherapy, sports, recreation, and electricity production. Socio-economic, technical and technological and ecological advantages are numerous in comparison to other sources of energy. Considering that this is a region that has significant land potential, the production of food, primarily vegetable in greenhouses, based on the use of thermal energy, should be a priority for the whole region and the municipality of Bogatić.
