National Institute of Environmental Protection and Research

Rome, Italy

National Institute of Environmental Protection and Research

Rome, Italy

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Jia G.,National Institute of Environmental Protection and Research
Journal of Radioanalytical and Nuclear Chemistry | Year: 2016

In the method, soil was fused together with Na2CO3 and Na2O2 at 600 °C, uranium and thorium were leached out with HCl, HNO3 and HF, and HClO4 was used to eliminate the residual HF through evaporation. The leaching solution (2 M HNO3) was passed through a Microthene-TOPO column to adsorb uranium and thorium. Thorium was first eluted with 2 M HCl and electrodeposited in 0.025 M H2C2O4 + 0.15 M HNO3 on a stainless steel disc. Uranium was eluted with a 0.025 M ammonium oxalate solution and also electrodeposited. Both thorium and uranium isotopes on the discs were measured separately by α-spectrometry. © 2016 Akadémiai Kiadó, Budapest, Hungary


Jia G.,National Institute of Environmental Protection and Research | Torri G.,National Institute of Environmental Protection and Research | Centioli D.,National Institute of Environmental Protection and Research | Magro L.,National Institute of Environmental Protection and Research
Environmental Sciences: Processes and Impacts | Year: 2013

A radiological survey on the iron- and steel-making plant ILVA Taranto (Italy) was mainly focused on contamination source-term investigation and exposure impact evaluation of the volatile radionuclides 210Po and 210Pb. The activity concentrations of 210Po and 210Pb in the raw materials, dust particles, surficial soils and atmospheric particulate samples collected in the area of ILVA Taranto were determined. The results showed that the activity concentrations in the raw materials were in the range of 3.46-17.9 Bq kg-1 for 210Po and 3.50-16.8 Bq kg-1 for 210Pb, which could create maximum annual inventories of 2.64 × 1011 Bq of 210Po and 2.71 × 1011 Bq of 210Pb if a total quantity of 22 Mt per year raw materials was consumed in the plant. The activity concentrations in dust particles emitted from the chimney of the ILVA Taranto were in the range of 5.91-85.6 kBq kg-1 for 210Po and 5.44-34.6 kBq kg-1 for 210Pb, releasing more 210Po than 210Pb. The activity concentrations in surficial soils were in the range of 49.3-140 Bq kg-1 for 210Po and 51.6-150 Bq kg-1 for 210Pb, a variation of the activity concentrations being observable with distance. The activity concentrations in atmospheric particulate were in the range of 43.1-564 μBq m-3 for 210Po and 618-1099 μBq m-3 for 210Pb, and it was observed that the mass specific activity concentrations of 210Po and 210Pb in the atmospheric particulate are one to three orders of magnitude higher than that found in the top soil. After deduction of the background contribution, about 27.2 μSv per year of the estimated committed effective dose at mean and 49.2 μSv per year at maximum could be attributed to 210Po and 210Pb emitted from the chimney of the ILVA Taranto and inhaled by the public in the form of atmospheric particulate, of which about 63.5-69.0% was the contribution of 210Pb. No specific interventions should be required, as far as only inhalation of 210Po and 210Pb are concerned. This journal is © 2013 The Royal Society of Chemistry.


Jia G.,National Institute of Environmental Protection and Research | Torri G.,National Institute of Environmental Protection and Research | Leandro M.,National Institute of Environmental Protection and Research
EPJ Web of Conferences | Year: 2012

A sensitive and accurate method for determination of 210Pb and 212Pb in drinking water samples was developed. In the method Pb was pre-concentrated as hydroxides, separated from alkaline earth elements as PbS precipitate, purified by an anion exchange resin chromatography column, precipitated as PbSO4 for source preparation and counted by a low background β-counter. The procedure was checked with a reference material supplied by the IAEA, and the obtained data were in good agreement with the recommended values, showing the recommended procedure can provide reliable results. The minimum detectable activity of the method was 0.039mBqL -1 for 210Pb and 0.033mBqL-1 for 212Pb if a 48 liter of water sample was analyzed. Seventeen drinking water samples were analyzed with a Pb recovery of 88.8±5.5%, and the typical activity concentration was in the range of 0.191-15.1mBqL-1 for 210Pb and of 1.12-5.77mBqL-1 for 212Pb. © Owned by the authors, published by EDP Sciences -SIF, 2012.


Jia G.,National Institute of Environmental Protection and Research
Journal of Chemistry | Year: 2013

Lead-210 and 210Po are naturally occurring radionuclides. Due to volatile characteristic of lead and polonium, environmental pollution of 210Pb and 210Po released from the coal power plant, steel-making industry and refractory material industry has been an exposure problem for the members of public. In this paper studies on the activity concentrations of 210Po and 210Pb in the raw materials, dust particles, surficial soils and atmospheric particulate samples collected in the area of the Iron- and Steel-Making Plant ILVA Taranto (Italy) were made. These data have been used to evaluate the source-term, distributions, inventories, mass balance, biological availability, ecological migration processes and public exposure risk of 210Pb and 210Po in the concerned environment. © 2013 Guogang Jia.


PubMed | National Institute of Environmental Protection and Research
Type: Journal Article | Journal: Environmental science. Processes & impacts | Year: 2013

A radiological survey on the iron- and steel-making plant ILVA Taranto (Italy) was mainly focused on contamination source-term investigation and exposure impact evaluation of the volatile radionuclides 210Po and 210Pb. The activity concentrations of 210Po and 210Pb in the raw materials, dust particles, surficial soils and atmospheric particulate samples collected in the area of ILVA Taranto were determined. The results showed that the activity concentrations in the raw materials were in the range of 3.46-17.9 Bq kg(-1) for 210Po and 3.50-16.8 Bq kg(-1) for 210Pb, which could create maximum annual inventories of 2.64 1011 Bq of 210Po and 2.71 1011 Bq of 210Pb if a total quantity of 22 Mt per year raw materials was consumed in the plant. The activity concentrations in dust particles emitted from the chimney of the ILVA Taranto were in the range of 5.91-85.6 kBq kg(-1) for 210Po and 5.44-34.6 kBq kg(-1) for 210Pb, releasing more 210Po than 210Pb. The activity concentrations in surficial soils were in the range of 49.3-140 Bq kg(-1) for 210Po and 51.6-150 Bq kg(-1) for 210Pb, a variation of the activity concentrations being observable with distance. The activity concentrations in atmospheric particulate were in the range of 43.1-564 Bq m(-3) for 210Po and 618-1099 Bq m(-3) for 210Pb, and it was observed that the mass specific activity concentrations of 210Po and 210Pb in the atmospheric particulate are one to three orders of magnitude higher than that found in the top soil. After deduction of the background contribution, about 27.2 Sv per year of the estimated committed effective dose at mean and 49.2 Sv per year at maximum could be attributed to 210Po and 210Pb emitted from the chimney of the ILVA Taranto and inhaled by the public in the form of atmospheric particulate, of which about 63.5-69.0% was the contribution of 210Pb. No specific interventions should be required, as far as only inhalation of 210Po and 210Pb are concerned.

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