Showing papers in "Journal of Environmental Radioactivity in 2018"

TL;DR: The significance of the integrated role of various factors which determine the efficiency of the uranium decontamination process in soil is brought out, including soil type, uranium speciation, the presence of coexisting ions and organics, etc.

TL;DR: Microplastic samples were deployed in freshwater, estuarine and marine conditions, then characterised using infrared spectroscopy to document changes to the plastic surface, indicating adhered mineral/clay-associated agglomerates that may increase overall adsorption capacity.

TL;DR: This review focusses on publications of the last decade revealing the presence of technogenic tritium in a sedimentary archive collected in the upper reaches of the Rhône river and findings from the Northwestern Mediterranean revealing in all likelihood the impact of terrigenoustritium inputs on OBT levels recorded in living organisms.

TL;DR: Empirical and clinical studies show that LDIR or LDRIR exposure may induce cancer, congenital abnormalities, cardiovascular and cerebrovascular diseases, cognitive and other neuropsychiatric disorders, cataracts and other eye and somatic pathology (endocrine, bronchopulmonary, digestive, etc).

TL;DR: New understanding enabled by simulations across methodological variations is overviewed, focusing on recent insights that connect with experimental observations about the energy scale for cesium adsorption on the basal surface.

TL;DR: The dispersion model results show large sensitivity on the accuracy of the coupled NWP model, especially through the description of planetary boundary layer turbulence, deep convection and wet deposition, underlining the importance of inverse modeling and data assimilation in future developments.

TL;DR: Rates of radon testing and mitigation are correpondingly low and appear to reflect cognitive defense mechanisms by which individuals believe that their risks from radon are lower than the risks faced by others.

TL;DR: The external radiation dose indicates that the state of Rio de Janeiro has a background radiation level within the natural range.

TL;DR: It was concluded that long-range transport from the northwestern areas along with the effects from local dust washout and the site specify played a major role in controlling the rate of 137Cs deposition.

TL;DR: Monitoring the detailed vertical distribution of 137Cs in litter and soil layers for 6 y found that temporal changes in those distributions were different among mixed forest, mature cedar and young cedar forests, and an exponential equation fitted well.

TL;DR: The presented experiment brings new experience with using unmanned semi-autonomous aerial vehicles and the latest mini-airborne radiometric instrument to demonstrate the instrument's ability to localize size-limited uranium anomalies.

TL;DR: The present work attempts to understand the U(VI) sorption behavior on silica under environmentally relevant conditions, i.e. at neutral to weakly alkaline pH and in the presence of dissolved calcium and carbonate.

TL;DR: The paper presents the latest collection of activity concentration data of natural radionuclides (226Ra, 232Th and 4 K) in building materials and includes radiological information about some NORM residues and by-products which can be of radiological concern if recycled inBuilding materials as secondary raw materials.

TL;DR: Hydrochemical results in addition to geological data and radon activities confirm the existence of vertical communication between the Miocene aquifer and the unconfined Plio-Quaternary aquifer through fault system and a lateral communication with the sea via seawater intrusion.

TL;DR: It can be concluded that Monte-Carlo simulation is a helpful, reasonable option that additionally gives more prominent adaptability, greater flexibility, precision and accuracy, and gained time when determining the detector response and efficiency in routine of environmental radioactivity monitoring.

TL;DR: In the experiments, 137Cs was barely desorbed from WB even by the treatments with solutions of NaNO3 and LiNO3 if the duration for the sorption was longer than approximately two weeks, which implies that Cs sorbed in WB became more strongly fixed with time.

TL;DR: Surface and vertical profile data together with the calculated water column inventories indicate that the total amount of the FNPP1-derived tritium deposited to the western North Pacific Ocean was 0.7 ± 0.3 PBq, and no clear impact of the Fukushima accident on 14C levels in theWestern North Pacific was observed.

TL;DR: The results indicate that excessive Cs can damage PS II in leaves, decreasing photochemical activity and the energy conversion rate, and indicate that stable Cs leads to abnormal expression of genes related to photosynthesis pathway.

TL;DR: Combined use of the automated event detection method and the simple model of this study could enable the ambient gamma dose "attention limit" to be reduced from 200 to 400% above background to 25-50%.

TL;DR: Different sample pretreatments and major purification procedures for 90Sr developed in recent years, such as variable digestion methods and extraction chromatography using Sr resin or DGA resin, are especially described.

TL;DR: How radiotracing techniques that are commonly applied to trace the fate and behaviour of chemicals and particles in various systems, can contribute towards addressing several important and outstanding questions in environmental plastic pollution research are highlighted.

TL;DR: It became more evident how future exercises need to be designed and set-up parameters like the meteorological driver or the output grid resolution should be pre-scribed in order to enhance diversity as well as comparability among model runs.

TL;DR: Analysis of radon levels in the soil and groundwater in the North Maladeta Fault area suggests that even relatively low radon concentration values in water can constitute a relevant indoor radon source when the transfer from water to indoor air is efficient.

TL;DR: In this article, the behavior of marine distribution coefficients is analyzed with the help of numerical experiments and analytical solutions of equations describing kinetic models for uptake/release of radionuclides.

TL;DR: The model TRIPS ("Transfer of Radionuclide In Perennial vegetation Systems") developed in this study privileged an integrated approach which makes the best use of mass balance studies and available explicit experimental data for Scots pine stands, paving the way for simplification or integration of new modules.

TL;DR: A comparison of the Ecotracer results to sampled 137Cs measurements in the coastal ocean area around Fukushima show the promise of the tool but also highlight some important limitations.

TL;DR: The results reveal the continuous variation of the indoor/outdoor pressure gradient as key driver for a constant "breathing" of any interior space, which affects the indoor radon concentration with both diurnal and multi day patterns.

TL;DR: The results clearly indicate that the direct global fallout is the main source of Pu in the Liao River estuary.

TL;DR: Water samples, solid samples such as soil, mud, coal, and coal ash, and hair and urine samples from local populations in Yili region of Xinjiang, China, showed that uranium concentrations showed that people living in this coal mining area have been subjected to uranium exposure for long periods of time.

TL;DR: Temporal variations of model-simulated 137Cs activity concentrations in surface water in the region of interest showed good agreement with observations, except in the southwestern North Pacific Ocean.