Published 2020 | Version v1
Journal article Metadata-only

Effect of storage temperature and duration of environmental water on dissolved 137Cs concentration

Creators

  • 1. National Institute for Environmental Studies, Fukushima Regional Collaborative Research Center, Miharu, Fukushima (Japan)
  • 2. National Agriculture and Food Research Organization, Tohoku Agricultural Research Center, Agricultural Radiation Research Center, Morioka, Iwate (Japan)
  • 3. National Agriculture and Food Research Organization, Institute for Rural Engineering, Tsukuba, Ibaraki (Japan)

Description

We examined fluctuations of dissolved 137Cs concentration in the constant temperature storage of unfiltered water samples from forest rivers, urban rivers and agricultural reservoirs. When the water was acidified immediately after sampling, the dissolved 137Cs concentration during the 30-day storage period increased from the in situ concentration. The dissolved 137Cs concentration without acid varied depending on the storage temperature, number of storage days, and the nature of the water. The findings suggest that it is possible to reproduce the in situ dissolved 137Cs concentration by restoring the water temperature to that of the originally sampled water after a short period storage of refrigeration prior to filtration. (author)

Availability note (English)

Available from DOI: https://doi.org/10.3769/radioisotopes.69.315

Abstract (Japanese)

環境水を未ろ過状態で保管する間の溶存態137Cs 濃度の変動を明らかにするため,森林河川,都市河川,ため池水を25℃・5℃・−20℃で定温保管し溶存態137Cs 濃度を測定した。採水直後に酸を添加し保管した場合,溶存態137Cs 濃度は現地濃度に比べ大きく上昇した。酸を添加しない場合の濃度は保管温度・日数と水の性状に応じて変動し,短期間冷蔵保管後,ろ過処理前に採水時の水温に戻す処理により現地濃度を再現できる可能性が示唆された。(著者)

Additional details

Additional titles

Original title (Japanese)
環境水の保管温度・期間が溶存態137Cs濃度の変動に及ぼす影響

Identifiers

DOI
10.3769/radioisotopes.69.315;

Publishing Information

Journal Title
Radioisotopes (Online)
Journal Volume
69
Journal Issue
10
Journal Page Range
p. 315-327
ISSN
1884-4111

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
52110154
Subject category
S54: ENVIRONMENTAL SCIENCES;
Descriptors DEI
CESIUM 137; ELECTRIC CONDUCTIVITY; FILTRATION; FISSION PRODUCT RELEASE; FUKUSHIMA DAIICHI NUCLEAR POWER STATION; GE SEMICONDUCTOR DETECTORS; ICP MASS SPECTROSCOPY; MELTDOWN; NUCLEAR POWER PLANTS; PH VALUE; PLANKTON; PONDS; RADIATION MONITORING; RADIOACTIVITY; RAIN WATER; REFRIGERATION; RIVERS; WATER QUALITY
Descriptors DEC
ACCIDENTS; AQUATIC ORGANISMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BEYOND-DESIGN-BASIS ACCIDENTS; CESIUM ISOTOPES; COOLING; ELECTRICAL PROPERTIES; ENVIRONMENTAL QUALITY; HYDROGEN COMPOUNDS; INTERMEDIATE MASS NUCLEI; ISOTOPES; MASS SPECTROSCOPY; MEASURING INSTRUMENTS; MONITORING; NUCLEAR FACILITIES; NUCLEI; ODD-EVEN NUCLEI; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; POWER PLANTS; RADIATION DETECTORS; RADIOISOTOPES; REACTOR ACCIDENTS; REACTOR SITES; SEMICONDUCTOR DETECTORS; SEPARATION PROCESSES; SEVERE ACCIDENTS; SPECTROSCOPY; SURFACE WATERS; THERMAL POWER PLANTS; WATER; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
29 refs., 3 figs., 2 tabs.