Showing papers in "Journal of Environmental Radioactivity in 2021"

TL;DR: In this paper, a review of advances made on radioactive waste treatments using zeolites as adsorbents is presented, the elements: cesium, strontium, cobalt, molybdenum, uranium, plutonium, americium, samarium, and europium were selected according to their nuclear importance and their presence in the environment.

TL;DR: Investigations lead to the conclusion that, in addition to the nature of the soil and building materials, the position of lower floor of dwellings plays a significant role in determining the amount of radon entry into residential buildings.

TL;DR: A review of radium chemistry can be found in this paper, which includes recent developments in radiochemical separations methods, advancements in analytical techniques followed by a more detailed discussion on the recent trends in radium determination.

TL;DR: In this paper, the levels of natural radionuclides, 238U and 232Th, in soil of Ezillo paddy fields (field 1 and field 2) at depths 0-4 cm and 4-8 cm, their transfer and accumulation in rice grains.

TL;DR: A mixture of global fallout and Pacific Proving Grounds (PPG) close-in fallout Pu rather than Fukushima accident-derived Pu has been transported by ocean currents and then preferentially scavenged in the coastal waters of Japan.

TL;DR: In this article, an analytical model is developed to predict the radiation footprint as a function of height, which is used as a tool to properly determine a source-detector geometry to be used in Monte-Carlo simulations of detector response at various elevations between 0 and 40 m.

TL;DR: In this paper, the authors investigated seasonal and annual variation of indoor radon concentrations in Pennsylvania, USA from 1988 to 2018, to explore the hotspot areas for high indoor radiation concentrations, and to analyze the association with various factors such as weather conditions, housing types, and floor levels.

TL;DR: In this paper, the effect of clay mineral composition on Cs adsorption behavior of silt and clay fractions (SC-fractions) of soil was investigated, and surface soil samples were collected within 2 km of Kori and Wolsong nuclear power plants in South Korea.

TL;DR: In this article, a total of 53 sediment subsamples, each incorporating sediment from one to two varves, were taken for gamma spectroscopy measurements using low-background HPGe detector system.

TL;DR: In this article, a long-term radon time series was analyzed in 14 rooms and offices to search factors influencing indoor radon concentration in high-rise buildings, and Radon entry to living rooms was determined both by diffusion from building materials and advection from adjoined low-ventilated spaces.

TL;DR: In this paper, a dynamic compartment model for apple fruit-bearing shoots was developed, assuming that the shoots are a simple unit of source and sink for photoassimilates, and the model simulated the 13C dynamics in plant tissues well, showing that the retention of photo-assimilated C at the harvest depended on the growth rate of C in the organs at the exposure.

TL;DR: The model will be applied to assess the radiological dose for marine biota from 3H, 90Sr, 131I, 134Cs and 137Cs released during and after the Fukushima Dai-ichi accident, and a dose assessment for pelagic and benthic fish is carried out.

TL;DR: In this article, the effect of integrating various iodine control methods on the main reprocessing operations and thereby facilitate selection of the optimum iodine control method is discussed. But, only a few of these processes were found to be suitable for commercial deployment.

TL;DR: The results showed that the approach could be used to establish the adequate dose of a chelating agent for phytoremediation of radionuclide or other toxic heavy metal contaminated soil by a plant.

TL;DR: The transfer factor (TF) of radionuclides from soil to A. auriculiformis in eight uranium and rare earth element (REE) mining areas of North Vietnam was investigated as discussed by the authors.

TL;DR: The activity concentration of 137Cs and 40K and total K content in the sclerotia of the Chinese medicinal fungus Wolfiporia cocos collected mainly from Yunnan province of China during the period 2013-2015 were investigated as mentioned in this paper.

TL;DR: Wang et al. as discussed by the authors used a modified systematic separation procedure combined with ICP-MS and LSC measurements to study the level, distribution and source of artificial radionuclides in the region.

TL;DR: Atmospheric transport modeling has been used to interpret the unprecedented number of multi-isotope detections of radioxenons observed during the six months of the qualification process by the Comprehensive Nuclear-Test-Ban Treaty Organization of the new SPALAX-NG system, suggesting the contribution of local source releases that have been difficult to identify to date.

TL;DR: In this article, the activity concentrations of natural K-40 and artificial Cs-137 radionuclides in soil and mosses and reveal the distribution similarities and differences in the same environment.

TL;DR: In this article, the redundancy analysis revealed a positive correlation between the concentrations of Rn and fluorine in groundwater, indicating that F can support the long-term retention of radon in groundwater.

TL;DR: Although not all tritium activities can be explained by interrogating the watermass origin, this study suggests that approximately 90% of events can be completely or partially attributed to the origin of the water mass.

TL;DR: In this paper, the authors conducted a systematic review of internet pages and scientific literature (September-December 2020) as well as expert consultation to help us identify and assess CS initiatives on radon (September 2020-February 2021) and evaluated to what extent these CS initiatives contribute to radon research and/or radiation protection from radon.

TL;DR: In this paper, mass spectrometry-based imaging approaches were combined with laser desorption ionization (LDI) and DESI-based techniques for the detection and localization of iodine isotopes in algal samples, and for better understanding of radioactive and stable iodine uptake mechanisms in the marine environment.

TL;DR: In this article, the authors investigated the 239+240Pu and 137Cs activities and 240Pu/239Pu atom ratios in surface soil and soil core collected from Qinghai-Tibet Plateau.

TL;DR: In this article, the authors highlight the recent developments of porous organic frameworks (POFs) for the rapid elimination of radionuclide and discuss the unique characteristics, adsorption properties, and interaction mechanisms between radioactive metal ions and the POF-based materials.

TL;DR: In this paper, a twenty-year (1998-2018) data series on 7Be concentrations in weekly collected aerosol samples in northern Poland showed a clear pattern of seasonal changes in 7Be with a maximum in the summer period associated with the most intensive thermal convection and vertical mixing.

TL;DR: In this article, the 210Po activity concentrations in the soil, water and the roots, stems, and leaves of two types of spinach (grown in soil flooded with water and grown in normal soil) in Hanoi, Vietnam were determined by alpha spectrometry.

TL;DR: In this article, the authors used a laboratory batch method to determine the sorption-desorption coefficients of U in soil-water system around the Fukushima Daiichi Nuclear Power Station (FDNPS) from a migration viewpoint.

TL;DR: A revision of the International Atomic Energy Agency (IAEA Technical Report Series No. 472 (TRS 472) transfer parameter data for root uptake of radionuclides by crops in tropical environments was conducted under the IAEA Modelling and Data for Radiological Impact Assessments (MODARIA II) programme (2016-2019). Data on concentration ratios between plant and soil (CRplant-soil) were collated and summarised following a specific data selection process based on the Koppen-Geiger classification of tropical (class A) climates RE

TL;DR: This study studies the uranium content and uranium isotopic disequilibria as a tool to identify hydrogeochemical processes from 52 groundwater samples in the province of Granada and indicates the correlation between uranium isotopes and bicarbonate and nitrate anions.