Carbon-14 analysis in solidified product of non-metallic solid waste by a combination of alkaline fusion and gaseous CO2 trapping

Ishimori, Ken-ichiro; Kameo, Yutaka; Matsue, H.; Ohki, Yoshiyuki; Nakashima, Miho; Takahashi, Kuniaki

doi:10.1016/j.apradiso.2010.10.014

Cited by 6 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Beta-particle-emitting nuclides 90 Sr and 3 H and alpha-particle-emitting nuclides 238 Pu, 239 Pu, 241 Am, and 244 Cm were analyzed using the conventional method described in previous reports [9][10][11][12][13][14][15][16]. For the gamma-ray-emitting nuclides 60 Co, 94 Nb, 152 Eu, and 154 Eu and beta-particle-emitting nuclides 14 C, 129 I, 36 Cl, 79 Se, and 99 Tc, the procedure was modified from the conventional method.…”

Section: Methodsmentioning

confidence: 99%

“…Since the solid-phase extraction of 129 I is affected by the presence of large amounts of carbon dioxide, 129 I was trapped with 2% of tetramethylammonium hydroxide. The heating condition was the same as that used for the 3 H and 14 C analyses [13].…”

Section: Analysis Of 129 Imentioning

confidence: 99%

“…This analysis used the same combustion apparatus as the conventional method for 3 H and 14 C [13], but the 14 C trap solution containing 1 M NaOH was increased to 80 ml from 20 ml. This is because the tree sample contained a large amount of organic compounds.…”

Section: Analysis Of 14 Cmentioning

confidence: 99%

See 2 more Smart Citations

Radiochemical analysis of rubble and trees collected from Fukushima Daiichi Nuclear Power Station

Tanaka

Shimada

Hoshi

et al. 2014

Journal of Nuclear Science and Technology

Self Cite

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Section: Analysis Of 129 Imentioning

confidence: 99%

See 1 more Smart Citation

Radiochemical analysis of rubble and trees collected from Fukushima Daiichi Nuclear Power Station

Tanaka

Shimada

Hoshi

et al. 2014

Journal of Nuclear Science and Technology

Self Cite

View full text Add to dashboard Cite

“…A variety of alkaline fusion methods exist for a complete dissolution of, e.g., geological, environmental and nuclear decommissioning samples. These methods utilise sodium hydroxide [6,7], lithium borate [8,9], sodium peroxide [10,11] and similar alkaline compounds in different mixtures together with high temperature (most often over 600 °C) for complete destruction of even resistant silica minerals. In traditional methods, alkaline fusion is carried out in crucibles which are manually placed in and out of the oven.…”

Section: Introductionmentioning

confidence: 99%

Development of 3H, 14C, 41Ca, 55Fe, 63Ni radiochemical analysis methods in activated concrete samples

Leskinen

Salminen‐Paatero

2021

J Radioanal Nucl Chem

View full text Add to dashboard Cite

Development of 3H, 14C, 41Ca, 55Fe and 63Ni radiochemical analysis methods were carried out independently by two laboratories using both inactivate and activated concrete samples. Two preliminary radioanalytical procedures for the non-volatile radionuclides (41Ca, 55Fe, 63Ni) and one Thermal oxidation method for the volatile radionuclides (3H, 14C) were developed. The difficulties in the method development and analysis of results are discussed.

show abstract

“…The silicates and oxides in heavy concrete require alkali fusion to completely break them down [7]. Even though fusion can break even the most strongly bound bonds, the heat applied in the process can volatilise radionuclides making the technique un-useful for a volatile DTM analysis unless the released DTM is trapped in-situ [9]. The solubility of graphite can also be overcome by small grain size and digestion with strong oxidative acids, thermal oxidation, or fusion.…”

Section: Introductionmentioning

confidence: 99%

Release of 3H and 14C during sampling and speciation in activated concrete

Leskinen

Hokkinen

Kärkelä

et al. 2021

J Radioanal Nucl Chem

View full text Add to dashboard Cite

Characterisation of contaminated and activated decommissioning waste require sampling of the studied material for the analysis of different radionuclides. The volatility of 3H and 14C can lead to the loss of the analytes in sampling of solid materials since most often at least some heat is involved in the sampling technique. Especially 3H can be lost in cases when it is present as tritiated water (HTO) due to the evaporation of water even at low temperatures. Therefore, in this study, the 3H and 14C speciations are discussed. Consequently, a drilling sampling technique was developed in order to capture the released 3H and 14C in absorption solutions and measured using liquid scintillation counting. The sampling technique was tested on an activated concrete core. The collected samples were analysed for 3H and 14C (activity concentration and speciation) using a thermal oxidation technique. The results showed that a significant amount of 3H was released during sampling even though the majority of 3H was strongly bound in the activated concrete. The studied activated concrete did not contain measurable amount of 14C and therefore speciation studies were not possible.

show abstract

Carbon-14 analysis in solidified product of non-metallic solid waste by a combination of alkaline fusion and gaseous CO2 trapping

Cited by 6 publications

References 10 publications

Radiochemical analysis of rubble and trees collected from Fukushima Daiichi Nuclear Power Station

Radiochemical analysis of rubble and trees collected from Fukushima Daiichi Nuclear Power Station

Development of 3H, 14C, 41Ca, 55Fe, 63Ni radiochemical analysis methods in activated concrete samples

Release of 3H and 14C during sampling and speciation in activated concrete

Contact Info

Product

Resources

About