Use of resonance ionization mass spectrometry for determination of Cs ratios in solid samples

Application of Mass Spectrometry for Analysis of Cesium and Strontium in Environmental Samples Obtained in Fukushima Prefecture

“…3 10 6 ) is also generated during the operation of reactors. Because of the difference in the generation process and the half-life of radioactive Cs, the isotopic ratios of 134 Cs/ 137 Cs and 135 Cs/ 137 Cs have been used for analyzing the operations of nuclear facilities [2][3][4][5][6]. Naturally occurring Sr has four stable isotopes ( 84 Sr, 86 Sr, 87 Sr, and 88 Sr), on the other hand, and the isotopic composition of Sr generated in reactors [1] are totally different from the natural abundance [7].…”

Analysis of cesium isotope compositions in environmental samples by thermal ionization mass spectrometry – 1. A preliminary study for source analysis of radioactive contamination in Fukushima prefecture

“…Because the generation of radioactive 135 Cs depends on the neutron flux, the isotopic ratio of 135 Cs (T 1/2 = 2.3 × 10 6 ) and 137 Cs is used for analyzing the operations of nuclear facilities [5][6][7][8][9]. This suggests that the isotope ratio analysis of the 135 …”

Critical comparison of radiometric and mass spectrometric methods for the determination of radionuclides in environmental, biological and nuclear waste samples

“…RIMS as a highly selective and sensitive mass spectrometric technique for ultratrace and isotope analysis has been used for the analysis of many radionuclides such as 41 Ca, 90 Sr, 99 Tc, 135 Cs, 210 Pb, 236 U, 238 Pu, 239 Pu, 240 Pu, 242 Pu, and 244 Pu in environmental, biological and waste samples [33,34,[94][95][96][97][98][99][100][101][102][103][104][105]. In RIMS the solid or liquid samples are vaporized and atomized by an atomic beam source (e.g.…”

“…The main difference is that the separation methods used for radiometric determination focuses on the removal of radionuclides, the stable elements in the reagents and apparatus are not of importance. Since the stable isotopes 99 Ru, 98 Ru, 100 Ru, 98 Mo, and 100 Mo are the main interferences in the mass spectrometric determination of 99 99 Tc has to be separated from the sample prior to irradiation; in addition a fast sample transfer system has to be used to shorten the decay time. NAA is theoretically a more sensitive method for 99 Tc, and a detection limit of 2.5 mBq has been obtained using pre-separation and radiochemical NAA [199][200].…”

“…NAA is theoretically a more sensitive method for 99 Tc, and a detection limit of 2.5 mBq has been obtained using pre-separation and radiochemical NAA [199][200]. Compared with 100 Tc, 99m…”