Authors:
T. Fujinaga Kyoto University Department of Chemistry, Faculty of Science Kyoto Japan

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Y. Kusaka Konan University Department of Chemistry, Faculty of Science Kobe Japan

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M. Koyama Kyoto University Department of Chemistry, Faculty of Science Kyoto Japan

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H. Tsuji Konan University Department of Chemistry, Faculty of Science Kobe Japan

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T. Mitsuji Nara University of Education Department of Chemistry Nara Japan

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S. Imai Konan University Department of Chemistry, Faculty of Science Kobe Japan

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J. Okuda Kyoto University Department of Chemistry, Faculty of Science Kyoto Japan

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T. Takamatsu Kyoto University Department of Chemistry, Faculty of Science Kyoto Japan

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T. Ozaki Konan University Department of Chemistry, Faculty of Science Kobe Japan

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Abstract  

A method is described for the determination of trace metal ions, V, Al, Cu, Mo Zn, and U, in natural water samples by neutron activation analysis, using organic coprecipitation as a preconcentration method. The preconcentration of trace elements was accomplished by converting the dissolved trace metal ions into the oxine chelates atpH 5.2 and extraction of the chelates witho-phenylphenol which is a liquid above 56 °C and solidifies at room temperature. After cooling the extraction system, the fine particles of the organic phase were collected on a millipore filter and the precipitate was air-dried in a clean environment. The solid extract was wrapped up in a sheet of clean polyethylene and subjected to neutron irradiation in a reactor for less than 10 min at a thermal flux of 2·1013 n·cm−2·sec−1. γ-Ray spectrometry by a coaxial Ge(Li) detector connected to a 1024-channel PHA was performed on the irradiated sample without further chemical separation, and thus the ppb level concentration of the elements in natural water samples could be determined. The fundamental study of the collection of the trace elements is also described.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)