“Multitracer” a new tracer technique — Its principle, features, and application

Ambe, S.; Chen, S. Y.; Ohkubo, Y.; Kobayashi, Yoshio; Maeda, Hidekatsu; Iwamoto, Masako; Yanokura, Minoru; Takematsu, Noburu; Ambe, F.

doi:10.1007/bf02035969

Cited by 71 publications

(13 citation statements)

References 12 publications

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“…The concentrations of the multitracer and Cs were estimated from the radioactivities to be less than 10 -13 and 10 -11 mol L -1 . Additional details about the preparation are described elsewhere [10].…”

Section: Preparation Of a Multitracer Solutionmentioning

confidence: 99%

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Effect of humic acid on the bioavailability of radionuclides to rice plants

Ozaki¹,

Ambe

Abe

et al. 2003

Anal Bioanal Chem

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We investigated the effect of humic acid and solution pH on the uptake of the radionuclides, (83)Rb, (137)Cs, (54)Mn, (65)Zn, (88)Y, (102)Rh, and (75)Se in rice plants by the multitracer technique. The addition of humic acid to a culture medium containing SiO(2) increased the uptake of Mn and Zn at pH 4.3, whereas their uptake was decreased at pH 5.3. Humic acid depressed the uptake of Y at both pHs. The uptake of Se, which does not interact with humic acid, was not affected by its presence. These results suggest that uptake of the radionuclides by the rice plant is regulated by the affinity of radioactive nuclides for humic acid, as well as by the soil solution's pH.

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Section: Preparation Of a Multitracer Solutionmentioning

confidence: 99%

“…The multitracer technique, first developed by Ambe et al using the RIKEN Ring Cyclotron, rendered it possible to trace the behavior of many radionuclides at the same time [10]. The multitracer technique has demonstrated well its usability in environmental research [11,12,13,14].…”

Section: Introductionmentioning

confidence: 98%

Effect of humic acid on the bioavailability of radionuclides to rice plants

Ozaki¹,

Ambe

Abe

et al. 2003

Anal Bioanal Chem

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“…were irradiated by a 135 MeV/nucleon 12C, 14N, or 160 beam accelerated by the RIKEN Ring Cyclotron. 23 An Au target containing various kinds of radioactive nuclides produced by nuclear-fragmentation reactions was dissolved in aqua regia. After the solution was evaporated to dryness, the residue was dissolved in 1.5 mol.dm 3 HC1.…”

Section: Preparation Ojxeed and Receiving Solutionsmentioning

confidence: 99%

Multitracer study on permeation of rare earth elements through a supported liquid membrane

Ambe

Yashiki

Maeda

et al. 1998

J Radioanal Nucl Chem

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Separation by means of supported liquid membranes is a useful method for the preparation and preconcentration of radioactive nuclides. The permeation of rare earth elements through a bis(2-ethylhexyl) hydrogen phosphate-decalin membrane supported on a microporous polytetrafluoroethylene sheet was studied using a multitracer containing radioactive nuclides of Sc, Zr, Nb, Hf, Ce, Pm, Gd, Yb, and Lu. Permeation rates of these elements from feed solutions of various acidity to receiving solutions of 0.5 mol.dm 3 HC1 were determined simultaneously. The feed solution at pH 1.4 gave the highest permeation rate for Ce, Pm, and Gd, amounting to about 95% of permeation for Ce and Pm, 80% for Gd, and 10% for Yb in 21 h. Scandium, Zr, Nb, Hf, and Lu were not transported at all from the feed solution. Permeation rates of Yb and Lu from the feed solution at pH 1.4 to receiving solutions of 0.75, 1.0, 2.3, and 4.0 mol.dm 3 HC1 increased with the concentration. The results obtained indicate that the light rare earth elements can be separated from the heavy ones by this method.

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“…This multitracer solution allows to mimic natural condition and to study multielemental multidimensional natural dependence. Multitracer solution has been so far prepared by bombarding gold target by high energy 12 C/ 14 N/ 16 O projectiles (80-135 MeV/u) followed by radiochemical separation of bulk gold target [3][4][5]. Therefore radiochemical separation of bulk lead and bismuth targets after bombardment by high-energy protons will also lead to a multitracer solution which could be used in various studies in fundamental sciences.…”

Section: Introductionmentioning

confidence: 98%