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Pratama, M. A.; 高原 省五; 宗像 雅広; 米田 稔*
Environment International, 115, p.196 - 204, 2018/06
被引用回数：2 パーセンタイル：7.09(Environmental Sciences)After the Fukushima accident, it became important to determine the quantity of radionuclide ingested by inhabitants. The most common methods currently used to obtain such data are the market basket (MB) and duplicate (DP) methods. The newly proposed method, which we designate as SL, consists of three steps: (1) the separation of wet weather and dry weather data, (2) determining the mass balance of the wastewater treatment plant (WWTP), and (3) developing a reverse biokinetic model to relate the amount of radionuclides ingested to the amounts contained in the sewer sludge. We tested the new method using the time-dependent radiocesium concentrations in sewer sludge from the WWTP in Fukushima City. The results from the SL method agreed to those from the MB while overestimated those from DP method. The trend lines for all three methods, however, are in good agreement. Sensitivity analyses of SL method indicate further studies on uncertainties of sensitive parameters are deemed necessary to improve the accuracy of the method.
Cs and stable K in man藤田 稔; 岩本 順子; 近藤 道夫; Yabe, Akira*
Health Physics, 16(2), p.185 - 195, 1969/00
被引用回数：5抄録なし
Pratama, M. A.; 高原 省五; 宗像 雅広; 本間 俊充; 米田 稔*
no journal, ,
This study proposes a new method to estimate the ingestion intake based on the time-dependent cesium (Cs) concentration in separate sewer sludge by using mass balance analysis of Cs in wastewater treatment plant and reverse biokinetic model. The results showed that the new method successfully estimated ingestion intake of Cs. However, several uncertainties resulted from parameters used in the models are indeed presence. In addition, this method needs to be tested in other areas to ensure its reliability and to identify its limitation.
