著者

三村 均 木村 仁宣 秋葉 健一 小野寺 嘉郎

出版者

東北大学

雑誌

東北大学素材工学研究所彙報 (ISSN:09194827)

巻号頁・発行日

vol.54, no.1, pp.1-8, 1998

被引用文献数

1

---

Potassium nickel hexacyanoferrate (II) (KNiFC)-loaded silica gels were prepared by successive impregnation of macro pores with Ni(NO_3)_2 and K_4Fe(CN)_6 solutions. The loading precentage of KNiFC increased with impregnation cycles, and the KNiFC precipitates uniformly dispersed in macro pores of the matrix. The uptake of Cs^+ on KNiFC-loaded silica gels attained equilibrium within 7d at batch factor of 700(cm)^3/g, and relatively large distribution coefficients of Cs^+, K_<d.Cs>, above (10)^4(cm)^3/g, were obtained even in the presence of 5M NaNO_3. The KNiFC particles were thermally decomposed above 300℃, resulting in lowering of uptake ability for Cs^+. This exchanger proved to be effective for the selective removal of radioactive cesium from waste solutions containing highly concentrated NaNO_3.insoluble ferrocyanidespotassium nickel hexacyanoferrate (II)loadingsilica gelimpregnationmacro poreuptakeadsorptioncesiumdistribution coefficient

著者

木村 仁宣 本間 俊充

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.41, no.2, pp.76-87, 2006 (Released:2010-08-05)

参考文献数

38

被引用文献数

1

---

In the event of a nuclear or radiological emergency, short-term countermeasures are implemented. This report summarizes the current status of these countermeasures, such as sheltering, evacuation and iodine prophylaxis in OECD/NEA member countries.

著者

木村 仁宣 本間 俊充

出版者

日本保健物理学会

雑誌

保健物理 : hoken buturi (ISSN:03676110)

巻号頁・発行日

vol.41, no.2, pp.76-87, 2006-06

被引用文献数

1

---

In the event of a nuclear or radiological emergency, short-term countermeasures are implemented. This report summarizes the current status of these countermeasures, such as sheltering, evacuation and iodine prophylaxis in OECD/NEA member countries.

著者

木名瀬 栄 木村 仁宣 高原 省五 本間 俊充

出版者

Atomic Energy Society of Japan

雑誌

日本原子力学会和文論文誌 (ISSN:13472879)

巻号頁・発行日

vol.10, no.3, pp.149-151, 2011 (Released:2011-07-29)

参考文献数

3

被引用文献数

1

---

There has been some concern in reviewing the effectiveness of making decisions on the implementation of protective measures in emergency exposure situations. After the Fukushima Daiichi nuclear power plant accident, temporal changes in the concentration of iodine 131 in tap water were studied using published data from several authorities in Fukushima, Ibaraki, and Tokyo. Averted doses to infants (1-year-old children) due to the intake of iodine 131 through tap water restrictions were also evaluated. Consequently, it was found that the apparent half-life of iodine 131 in tap water was 2.8 days. The averted equivalent doses to the thyroids of 1-year-old children were found to have a maximum value of 8.3 mSv in a local area of Fukushima. Hence, the tap water restrictions implemented by the authorities were considered to be effective in the early phase of the emergency exposure situation.