Abstract：
:Aiming to determine the plutonium amount as well as its isotopic composition, in particular, in swipe samples for safeguards purposes, an analytical method was developed with a plutonium separation step based on extraction chromatography using 2 cm TEVA columns and detection with quadrupole ICP-MS applying an ultra-sonic nebulizer coupled with membrane desolvation system. The method was successfully applied to New Brunswick plutonium certified reference materials as well as to Lawrence Livermore National Laboratory round robin samples, based on the round robin samples provided by the Institute for Reference Materials and Measurements (Belgium), as part of the Regular European Interlaboratory Measurement Evaluation Programme (REIMEP), campaign 16 (isotopic abundances of plutonium in plutonium nitrate samples), with a total plutonium amount between 1 and 0.25 ng per sample. After the introduction of an additional separation step, it was also possible to carry out precise and accurate total plutonium, (240)Pu/(239)Pu, (241)Pu/(239)Pu and (242)Pu/(239)Pu atom ratios determination in sediment sample showing its applicability to environmental samples in general, reaching a detection limit equivalent to 5 mBq(239)Pu kg(-1).
journal_name
J Environ Radioactjournal_title
Journal of environmental radioactivityauthors
Godoy ML,Godoy JM,Roldão LAdoi
10.1016/j.jenvrad.2007.03.010subject
Has Abstractpub_date
2007-01-01 00:00:00pages
124-36issue
2-3eissn
0265-931Xissn
1879-1700pii
S0265-931X(07)00096-3journal_volume
97pub_type
杂志文章abstract：:(79)Se is among the most important long lived radionuclides in spent nuclear fuel and selenite, SeO3(2-), is its typical form in intermediate redox potential. The sorption behaviour of selenite and the bacterial impact on the selenite sorption in a 7-m-deep profile of a nutrient-poor boreal bog was studied using batch...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2015.05.014
更新日期：2015-09-01 00:00:00
abstract：:This paper discusses the adsorption properties for uranium(VI) by manganese oxide coated zeolite (MOCZ). The removal of uranium(VI) from aqueous solution by adsorption onto MOCZ in a single-component system with various contact times, pH, competitive ions, temperatures and initial concentrations of uranium(VI) was inv...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2006.12.003
更新日期：2007-01-01 00:00:00
abstract：:After harvesting, the activity content of fruits may still be affected by the manner in which they are treated. Long storage times will reduce the activity contents of short-lived radionuclides; preparation and/or processing may cause activity to be physically removed. This paper presents the results of a review of th...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章,评审
doi：10.1016/s0265-931x(00)00036-9
更新日期：2001-01-01 00:00:00
abstract：:A required parameter for the ERICA Tool is the concentration ratio (CR), which is used to describe the transfer from environmental media to a range of organisms. For the original parameterisation of the ERICA Tool, 60% of these values were derived using a variety of extrapolation approaches, including the application ...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2012.05.005
更新日期：2013-12-01 00:00:00
abstract：:A powerful neutron source, the European Spallation Source (ESS), is currently under construction in Lund, Sweden (~90 000 inhabitants). Levels of tritium (3H) in urine were estimated in members of the public in Lund and employees at the ESS using liquid scintillation counting, to obtain baseline levels before the star...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2019.106141
更新日期：2020-03-01 00:00:00
abstract：:The aim of this work was to determine the concentrations and isotopic compositions of plutonium and uranium in environmental samples for safeguards purposes. An analytical method was developed with a plutonium and uranium separation procedure based on extraction chromatography (using 2mL TEVA and UTEVA columns) and de...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2009.04.012
更新日期：2009-08-01 00:00:00
abstract：:The solid-liquid distribution coefficient (Kd) is a key input parameter in radioecological risk models. However, its large variability hampers its usefulness in modelling transport processes as well as its accuracy in representing soil-radionuclide interactions. To assist in the selection of Kd values and their cumula...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2020.106378
更新日期：2020-11-01 00:00:00
abstract：:Ore is considered as an important source of many elements such as the iron, phosphorus, and uranium. Concerning the natural radionuclides, their concentrations vary from an ore to other depending on the chemical composition of each site. In this work, two phosphate ores found in East of Algeria have been chosen to ass...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2010.02.008
更新日期：2010-05-01 00:00:00
abstract：:Samples from a marine sediment core from the Irish Sea (54.416 N, 3.563 W) were analyzed for the isotopic composition of uranium, plutonium and americium by a combination of radiometric methods and AMS. The radiochemical procedure consisted of a Pu separation step by anion exchange, subsequent U separation by extracti...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2011.01.004
更新日期：2011-04-01 00:00:00
abstract：:This paper describes a dynamic compartment model (K-BIOTA-DYN-M) to assess the activity concentration and whole body dose rate of marine biota as a result of a nuclear accident. The model considers the transport of radioactivity between the marine biota through the food chain, and applies the first order kinetic model...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2014.11.006
更新日期：2015-02-01 00:00:00
abstract：:Organically bound tritium (OBT) has become of increasing interest within the last decade, with a focus on its behaviour and also its analysis, which are both important to assess tritium distribution in the environment and dose consequences. After the first OBT International Workshop which was held in France in May 201...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2017.09.009
更新日期：2018-01-01 00:00:00
abstract：:In this study the commonly used f-value for the 1001.03 keV (0.835 ± 0.004%) energy transition of the 234mPa was re-evaluated due to an obvious consistent overestimation of the 238U activity concentration. Different calibration protocols, samples' matrices and geometries, and gamma-ray spectrometers were exploited in ...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2017.01.018
更新日期：2017-04-01 00:00:00
abstract：:This study was conducted to assess radiocesium accumulation in birds after the accident at Tokyo Electric Power Company's Fukushima Daiichi Nuclear Power Station in 2011, with a particular focus on 137Cs, which has a long physical half-life. Results of 137Cs monitoring in four game bird species including two pheasant ...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2018.10.016
更新日期：2019-02-01 00:00:00
abstract：:A biokinetic model is presented that simulates the uptake and release of (99)Tc by the European lobster (Homarus gammarus). This organism is of significant radioecological interest since lobsters, in contrast to most other organisms, have a high affinity for (99)Tc. The model is designed to represent annually averaged...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/S0265-931X(03)00002-X
更新日期：2003-01-01 00:00:00
abstract：:Several multi-day samplings were conducted over a 2-year period from an oil shale-fired power plant operating with pulverized fuel type of boilers that were equipped with either novel integrated desulphurization system and bag filters or with electrostatic precipitators. Oil shale, bottom ash and fly ash samples were ...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2016.10.005
更新日期：2017-07-01 00:00:00
abstract：:In this work we present the results of a 2-year survey of indoor radon variations in four cities of Lahijan, Ardabil, Sar-Ein and Namin in North and Northwest Iran. We used both passive and active measurements by solid state nuclear track detectors (SSNTDs) with CR-39 polycarbonate and PRASSI Portable radon Gas Survey...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2007.01.013
更新日期：2007-01-01 00:00:00
abstract：:The mechanism of biological activation by beta-emitting radionuclide tritium was studied. Luminous marine bacteria were used as a bioassay to monitor the biological effect of tritium with luminescence intensity as the physiological parameter tested. Two different types of tritium sources were used: HTO molecules distr...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2016.03.017
更新日期：2016-06-01 00:00:00
abstract：:This study deals with performance of removal of cesium (Cs+) and strontium (Sr2+) ions from synthetic aqueous solution using amino pyridine sulfone amid resin as a barrier material for nuclear waste storage areas to reduce environmental risk. The effects of adsorbate concentration, temperature and contact time on the ...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2019.106101
更新日期：2020-03-01 00:00:00
abstract：:Radon (222Rn), a radioactive gas with a half-life of 3.82 days, is continuously emanated from soil, rocks, and water by the radioactive decay of 226Ra. Radon-222 is released from the ground into the atmosphere, where it is transported mainly by turbulent diffusion or convection. For precise measurement of radon-222 at...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2017.02.008
更新日期：2017-05-01 00:00:00
abstract：:Soil amendments with zeolite and vermiculite were expected to prevent radiocaesium (137Cs) dissolution and uptake from the soil by plants. In this study, we investigated how zeolite and vermiculite added to soil influence the radiocaesium fixation with ageing. Zeolite and vermiculite were mixed with soil (1 wt%) befor...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2019.02.011
更新日期：2019-07-01 00:00:00
abstract：:Using a sector-field ICP-MS the vertical distributions of the (99)Tc concentration and (99)Tc/(137)Cs activity ratio were measured in the coastal waters off Aomori Prefecture, Japan, where a spent-nuclear-fuel reprocessing plant has begun test operation. The (99)Tc concentrations in surface water ranged from 1.8 to 2....
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2011.04.008
更新日期：2011-08-01 00:00:00
abstract：:The uncontrolled spread out of radioiodine (especially (1)(3)(1)I) produced from nuclear activities or accidents, due to its high volatility, to the biosphere represents an environmental impact because of its concentration in the thyroid gland and accumulation on soil surface. This work represents a simple method for ...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2015.07.022
更新日期：2015-12-01 00:00:00
abstract：:The influence of soil texture on the distribution and availability of (238)U, (230)Th, and (226)Ra in soils was studied in soil samples collected at a rehabilitated uranium mine located in the Extremadura region in south-west Spain. The activity concentration (Bqkg(-1)) in the soils ranged from 60 to 750 for (238)U, f...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2008.03.004
更新日期：2008-08-01 00:00:00
abstract：:Removal of IO3- from environmental samples with low-cost methods and materials is very useful approach for especially large-scale applications. Corn stalk is highly abundant agriculture residual, which is employed as useful biosorbent in many studies. In the present work, dried powder of corn stalk is applied for the ...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2018.05.008
更新日期：2018-10-01 00:00:00
abstract：:Ra isotopes are a powerful tool for quantifying the flux of submarine groundwater discharge (SGD) into the sea. Previous studies of 223Ra and 224Ra mass balances in coastal embayments have shown that the Ra balance is dominated by supply via SGD, exchange with the open ocean and radioactive decay. The current study sh...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2009.12.005
更新日期：2010-07-01 00:00:00
abstract：:Radioactivity in some Tunisian thermo-mineral springs (11 hot mineral springs and one cold spring) has been determined for the first time in Tunisia using radiochemical separation procedures. The obtained results show that 238U activity concentrations vary between 1.5 and about 43 mBq/l. The measured activities of 234...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/s0265-931x(01)00153-9
更新日期：2002-01-01 00:00:00
abstract：:The methodology for estimating radiocaesium distribution between solid and liquid phases in lakes is applied for three prealpine lakes: Lake Constance (Germany), Lake Lugano (Switzerland) and Lake Vorsee (Germany). It is based on use of the exchangeable distribution coefficient and application of the exchangeable radi...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/s0265-931x(01)00075-3
更新日期：2002-01-01 00:00:00
abstract：:A previous study on seabed sediments of the Bay of Cadiz (SW of Spain) enabled us to identify several relations between sedimentological variables and activity concentrations of environmental radionuclides such as (137)Cs, (226)Ra, (232)Th and (40)K. In this paper the study has been extended to a large neighbouring in...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2008.11.011
更新日期：2009-03-01 00:00:00
abstract：:A pit lake arises as a consequence of anthropogenic activities in opencast mining areas. These water bodies may be enriched in hazardous stable contaminants and/or in naturally occurring radionuclides depending on the local geological conditions. Mining legacy in Sweden produced hundreds of these pit lakes and most of...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2020.106384
更新日期：2020-11-01 00:00:00
abstract：:This article compares and discusses the ability of two different models to reproduce the observed temporal variability in grass (14)C activity in the vicinity of AREVA-NC La Hague nuclear fuel reprocessing plant in France. These two models are the TOCATTA-χ model, which is specifically designed for modelling transfer ...
journal_title：Journal of environmental radioactivity
pub_type： 杂志文章
doi：10.1016/j.jenvrad.2015.05.015
更新日期：2015-09-01 00:00:00
