Determination of 90Sr and 210Pb in sludge samples using a LOV-MSFIA system and liquid scintillation counting

Determination of artificial beta-emitters in sludge samples

“…Although the concentration activity for the different isotopes that can be normally found in these waters is usually low, these radionuclides can effectively be removed from the water through the different treatments applied in these plants. However, one consequence of this is that these isotopes are concentrated in the sludge generated during the process, as can be seen in previous studies by our group [9,12,13], in which the presence of different natural and artificial radionuclides has been demonstrated. In the case of the latter, 137 Cs, 90 Sr and 60 Co were identified and quantified and their origin may be related to the presence of a NPP upstream of the river.…”

“…In the case of the latter, 137 Cs, 90 Sr and 60 Co were identified and quantified and their origin may be related to the presence of a NPP upstream of the river. For example, in the study by Mola et al [13], an automatic extraction method using a specific resin (Sr-spec) followed by liquid scintillation counting (LSC) detection was used to determine the presence of 90 Sr in the sludge generated in a DWTP in Spain that uses water from the River Ebro as raw water and, moreover, this plant is located downstream of a NPP. The activity concentrations found for this isotope in the analysed samples ranged between 34 and 76 Bq kg -1 .…”

Automated ⁹⁰Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

“…Among the HTM, 90 Sr is of great interest due to its toxicity and high energy emission. Its determination is time consuming and requires the separation from interferences and quantification using LSC or spectroscopic methods 3 4 5 6 7 8 9 10 11 12 13 .…”

“…Such devices allow the automatic separation and pre-concentration of the analytes prior to the detection, thus increasing reproducibility and repeatability 8 17 18 19 . LOV systems coupled to multisyringe flow pumps have been widely used for the detection of radionuclides, due to the minimization of the reagent consumption and waste generation 8 10 17 18 19 20 . Nevertheless, reported studies regarding online detection at ultra-trace levels are sparse 8 17 .…”

Sequential Injection Analysis System Exploiting On-line Solid-phase Extraction for the Determination of Strontium and Nickel by Microwave Plasma Atomic Emission Spectrometry

“…[1][2][3] These radioisotopes behave in a similar way as in their stable states, representing a threat to human health. 4,5 The common radiochemical separation techniques for selective measurements of radioisotopes that employ methods for strontium and/or nickel determination in environmental samples are laborious, time consuming and expensive. 6 Thus, a fast detection methodology with affordable cost is needed for measuring stable strontium and nickel that could be incorporated to the radiometric analysis of environmental samples.…”