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Introduction
Publications
Publications (57)
This paper gives an overview of the REEs distribution in topsoil from Ditrău Alkaline Massif area under influence of basic natural factors (parent material and soil acidity). Seventy-six soil samples were collected in accord with the most representative bedrock types and concentrations of the elements were determined using inductively coupled plasm...
The specific activity and spatial distribution of 238U, 232Th and 40K were determined in the surface soil from the Lișava uranium mining sector. This sector belongs to the Banat district, an historically important uranium mining area in Romania (an area with closed uranium mines and a radioactive waste dump). Gamma-ray spectrometry using a high-pur...
The concentration and spatial distribution of three naturally occurring radionuclides, 238U, 232Th and 40K, has been determined in stream sediments from six left side tributaries of Bistricioara river (Bistriței Mountains, Eastern Carpathians, Romania). Historically, several mining works were undertaken in the area, with a view of exploring its’ po...
The concentration and spatial distribution of three naturally occurring radionuclides, 238U, 232Th and 40K, has been determined in stream sediments from six left side tributaries of Bistricioara river (Bistriței Mountains, Eastern Carpathians, Romania). Historically, several mining
works were undertaken in the area, with a view of exploring its’ po...
The Albeşti granite, of Early Ordovician age, was formed by crustal anatexis, experienced a medium temperature and medium-to-high pressure metamorphic event and is now hosted by the crystalline formations of the Leaota Mountains (South Carpathians), where it forms stratigraphically concordant lenses. Its most striking feature, similar to other Euro...
The Early Ordovician Albești Granite was formed by crustal anatexis, experienced a medium temperature and medium to high pressure metamorphic event and is now hosted by the crystalline formations of the Leaota Mts. (South Carpathians) where it forms stratigraphically concordant lenses. Its most striking feature, similar to other European granites o...
This study examined the spatial relations of the selected metals in stream sediments tributary of the Oltet River in longitudinal profile, along the entire length (185 km) in relation to geology, lithology and anthropogenic activities. Differences in regional geology from the northern to the southern of the Oltet River Basin are reflected in stream...
This study examined the spatial relations of the selected metals in stream sediments tributary of the Oltet River in longitudinal profile, along the entire length (185 km) in relation to geology, lithology and anthropogenic activities. Differences in regional geology from the northern to the southern of the Oltet River Basin are reflected in stream...
The Catalinul graphite deposit is hosted in pre-Alpine basement rocks of the Lainici Paius Group represented by medium to high-grade migmatized metasediments rich in carbonaceous matter, intruded by granitoid bodies and porphyry dykes [1]. The graphite deposit, lenticular in shape, appears in graphitic schist bounded by paragneiss-micaschist in the...
The concentration of naturally occurring radionuclides (U-238, Th-232 and K-40) in stream sediments of the Oltet River was measured in order to establish the primary sources of radionuclides, the transport pathways and the geochemical factors favouring their mobilisation and concentration in the existing geological context. The Oltet River has a le...
Detailed information concerning the pre-and post-burial modifications that affect the remains of ancient organisms (i.e. their taphonomy) are instrumental in appreciating the ways the fossil record is biased by biological and geological processes. Reconstructing taphonomic history also allows a more accurate understanding of the paleoenvironmental...
Since most of our time is spent indoors at workplace and radon together with its short-lived decay products (218 Po, 214 Po) in the buildings is the major source of public exposure to natural radioactivity, the measurement and evaluation of radon concentrations in buildings are important. This paper presents the measured indoor radon concentration...
The black sand of the Chituc marine sand bank, northern of the city of Navodari (Romania), presents anomalous high radioactivity. Field measurements recorded in some places dose rate up to 200 nSv/h, significantly overpassing the average value of 44 ± 20 nSv/h along the entire Southern sector of Romanian Black Sea shore.
Gamma ray spectrometry per...
The black sand of the Chituc marine sandbank, northern of the city of Navodari (Romania), presents anomalous high radioactivity. Field measurements recorded in some places dose rate up to 200 nSv/h, significantly overpassing the average value of 44 ± 20 nSv/h along the entire Southern sector of Romanian
Black Sea shore.
Gamma ray spectrometry perf...
This study assesses the level of terrestrial gamma radiation in air associated by the presence of the naturally occurring radionuclides 232 Th, 238 U and 40 K in soils developed on alkaline rocks in an area of approximately 200 km 2 covering the Massif Alkaline Ditrău. This massif, unique by mineralogical and petrographical variety, is emplaced in...
In the hydraulic fracturing method the main quantity of fracking fluid (50-90%, waters with noxious additives) remains in the underground of the exploited areas, at various depths. The exploitation is more advantageous as the quantity of fracking fluid refluxed at surface is smaller. But in the same time, the greater the quantity of this fluid rema...
The National Museum of Geology hosts collections which including over 80.000 samples of rocks, fossils and minerals, and from this point of view represent an ideal location for the study of relationship between primary source of radon and its variation levels in the indoor air. Because Rn-222 is a decay product of Ra-226 in natural decay series of...
The black sand of the Chituc marine sandbank situated northern of the city of Navodari (Romania), displayed anomalous high ambient dose rates. Field measurements performed during 2013 Summer campaign recorded in some places dose rate up to 200 nSv/h, significantly overpassing the average value of 44 ± 20 nSv/h recorded along the entire Southern sec...
The aim of this study is assessment of the background of natural radionuclides (U-238, Th-232, K-40) and anthropogenic nuclide (Cs-137) in the surface layers of soils from Lehliu area. Also, can be estimated contribution of fertilizers in increasing levels of radionuclides from soil .The geochemical sampling area covers all surface of Geological ma...
The rocks of the Ditrău Massif (syenite, nepheline syenite, hornblendite, diorite, monzonite, monzodiorite, granitoid) have naturally higher uranium and thorium contents, making the area ideal for the study of the distribution in soils of these elements. The soil types present in the investigated area, according to the Romanian Soil Taxonomic Class...
Radon (Rn) is a chemically inert radioactive gas, formed by the natural radioactive decay
of Uranium (U) in rock, soil, and water. Naturally existing, low levels of U occur widely in
Earth's crust. Radon is the main responsible for the public exposure to natural ionizing
radiations. Constant exposure to high concentration of radon gas may cause lun...
Radon (Rn) is a chemically inert radioactive gas, formed by the natural radioactive decay
of Uranium (U) in rock, soil, and water. Naturally existing, low levels of U occur widely in
Earth's crust. Radon is the main responsible for the public exposure to natural ionizing
radiations. Constant exposure to high concentration of radon gas may cause lun...
Radon (Rn) is a chemically inert radioactive gas, formed by the natural radioactive decay
of Uranium (U) in rock, soil, and water. Naturally existing, low levels of U occur widely in
Earth's crust. Radon is the main responsible for the public exposure to natural ionizing
radiations. Constant exposure to high concentration of radon gas may cause lun...
You are here: Home » Past Issues » Volume 8, 2013 - Number 2 » RELATIONSHIP FROM GEOLOGY AND RADON IN OUTDOOR AIR IN MASSIF DITRĂU AREA, EASTERN CARPATHIANS – ROMANIA
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Adriana ION
Geological Institute of Romania, Bucharest, 012270, Romania, adi75riana@yahoo.ro
RELATIONSHIP FROM GEOLOGY AND RADON IN OUTDOOR AIR IN MASSIF DITRĂU AREA, EASTE...
The present paper describes the level of rare earth elements in soils
developed from Ditrău massif area for evaluating of the
background of these elements and accurate assessment of environmental
impact. Also this paper contributed to understanding the important role
of parent rocks in pedogenic processes. The Ditrău Alkaline
Massif represent an in...
The natural radionuclides which occur in typical rocks of Ditrău Alkaline Massif area (Eastern Carpathians, Romania) are 238U, 232Th and their decay progeny, and the primordial radionuclide 40K. The specific activity were measured in laboratory, using gamma-ray spectrometry with high purity germanium detector(HPGe). The activity concentrations of t...
![Fig. 10.7 Distribution of Li in bottled water samples (from [ 28 ] ,...](profile/Trajce-Stafilov/publication/234833904/figure/fig7/AS:393550412959745@1470841138117/Distribution-of-Li-in-bottled-water-samples-from-28-p131_Q320.jpg)
![Fig. 10.4 Distribution of As in bottled water samples (from [ 26 ] ,...](profile/Trajce-Stafilov/publication/234833904/figure/fig4/AS:393550408765451@1470841137910/Distribution-of-As-in-bottled-water-samples-from-26-p77_Q320.jpg)
![Fig. 10.6 Distribution of F – in bottled water samples (from [ 28 ] ,...](profile/Trajce-Stafilov/publication/234833904/figure/fig6/AS:393550412959744@1470841138085/Distribution-of-F-in-bottled-water-samples-from-28-p111_Q320.jpg)
To obtain a fi rst impression of the geochemistry and quality of European ground water bottled mineral water was used as a sampling medium. In total, 1,785 bottled waters were purchased from supermarkets of 40 European countries, representing 1,247 wells/drill holes/springs at 884 locations. All bottled waters were
analysed for 72 parameters at the...
A first impression of the geochemistry and quality of European ground water was obtained by using bottled mineral water as a sampling medium. In total, 1785 bottled waters were purchased from supermarkets of forty European countries, representing 1247 wells/drill holes/springs at 884 locations. All bottled waters were analysed for 72 parameters at...
Every cyclic geological phenomenon may suggest a structural image of the geological time. The dynamic cycles with very long periods can characterize the whole geological time, but especially the Precambrian. The cycles with periods between 4 and 26 Ma are useful for the temporal individualization of the Phanerozoic and the cycles with a short perio...
The new studies on the southeastern part of the Pannonian Depression confirm our idea concerning the existence in this basin of a lake with its shores around +100 m in the Uppermost Pleistocene (the Relict Pannonian Lake, Belgrade – 2006). A morphologic peculiarity placed in the Cazanele Mici area seems to have been permitted the maintaining of the...
REACH (Registration, Evaluation and Authorisation of Chemicals), the new European Chemicals Regulation was adopted in December 2006. It came into force on the 1st June 2007. REACH, as well as the pending EU Soil Protection Directive, require additional knowledge about "soil quality" at the European scale. The GEMAS (geochemical mapping of agricultu...
Projects
Projects (3)
Geochemistry of REEs (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Lu, Y) and natural radioactive elements (U, Th) in soils developed on alkaline rocks and contact rocks, in Ditrău Alkaline Massiv area.
The study aims at detailed mapping of the alluvial sediments of the Oltet River in longitudinal profile, along its entire length (185 km). Through systematic sampling of river bed sediments at high enough densities to ensure representativeness for the geological formations traversed, local relief and hydrological conditions, and physico-chemical, mineralogical, radiometrical and statistical analysis of the samples, the project is intended to achieve an image as accurate as possible of the distribution of the parent radioisotopes 232Th, respectively 238U, and their decay products (226Ra, 222Rn and 220Rn, 228Ra) in alluvial sediments, with the possibility of identification and evaluation of geogenic sources, natural geochemical factors which cause fractionation and radioactive disequilibrium among the products of the above-mentioned decay series, and secondary concentration processes.
