Speciation of radionuclides – analytical challenges within environmental impact and risk assessments

A review on speciation of iodine-129 in the environmental and biological samples

“…In urine, iodine mainly exists as iodide, with small amount of organic iodine. The element was also found as iodide, MIT, DIT, T 4 , T 3 , rT 3 and other unknown species in fish flesh [58].…”

“…In order to assess short-and long-term consequences of radioactive contamination in the environment, information on on the distribution of radionuclide species influencing mobility and biological uptake is needed [3]. Such information can be obtained by means of radionuclide speciation analysis, which can be defined as the identification and quantification of a radionuclide species in a sample.…”

Particulate Phases Possibly Conveyed from Nuclear Waste Repositories by Groundwater

“…By simultaneously immersing several devices which have diffusion gels of various thicknesses or porosities, there is possible to obtain information about the nature of the complexes which are present in various categories of natural waters, and also about the kinetics of the geochemical reactions in which those complexes are involved (Zhang & Davison, 2000;, including in porewater (Leermakers et al, 2005;Wu et al, 2011). DGT has been successfully utilized in order to monitor the radionuclides migration (Chang et al, 1998;Duquène et al, 2010;Gao et al, 2010;Gregusova & Docekal, 2011;Li et al, 2007;Salbu, 2007).…”

The Potential Of I-129 as an Environmental Tracer

“…Current concentrations of 129 I in the environment do not represent any radiological hazard for man, even in the vicinity of nuclear fuel reprocessing plants. But to assess environmental impact and potential risk and consequences during long-term exposition information on the distribution and radionuclide species, speciation analysis, influencing the mobility, biological uptake and accumulation of radionuclides is needed (Salbu, 2007). Speciation analysis provides crucial information for evaluation of radionuclide transport mechanism in the environment and to the human body and accurate risk assessments (Hou et al, 2009).…”