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辰野 宇大*; 脇 嘉理*; 角間 海七渡*; 二瓶 直登*; 高瀬 つぎ子*; 和田 敏裕*; 吉村 和也; 中西 貴宏; 大手 信人*
Journal of Environmental Management, 329, p.116983_1 - 116983_13, 2023/03
被引用回数:1 パーセンタイル:14.8(Environmental Sciences)This study investigated the effect of radioactive cesium-rich microparticles (CsMPs) on the radiocesium (RCs) concentration and distribution coefficient (Kd) in two rivers, Takase River and Kami-Oguni River, flowing in the watersheds with different radioactive contaminated conditions in Fukushima Prefecture. Unlike RCs adsorbed on to the suspended solids (SS), there was no correlation between the RCs concentration derived from CsMPs and the SS concentration in both rivers. Inflow of CsMPs to the targeted rivers was contingent. CsMPs were detected only in some samples during rainfall. Furthermore, the proportion of RCs concentration derived from CsMPs in the average RCs concentrations per unit mass of SS in both rivers during rainfall were not large, which were 10% or less. As a results, CsMPs did not significantly increase particulate RCs concentration and had little effect on Kd in both river water flowing the watershed with different RCs contaminated condition.
Singha, B.*; Eljamal, O.*; Karmaker, S. C.*; Maamoun, I.; 杉原 裕司*
Journal of Environmental Management, 317, p.115484_1 - 115484_9, 2022/09
被引用回数:6 パーセンタイル:68.71(Environmental Sciences)Water conservation represents important pro-environmental behavior for a sustainable environment. We investigate the link between water conservation behavior and general environmental concerns, using a large dataset from the Multipurpose Household Survey conducted annually by the Italian Central Statistics Office and controlling for socio-economic characteristics and regional variables. Univariate probit models show that pollution and resource exhaustion are positively related to individual water conservation behavior while alteration of environmental heritage exhibits a negative relationship with water saving behavior. Our findings are robust to the inclusion of environment knowledge and social capital variables. Robustness analysis also indicates that television and radio, participation in environmental initiatives, money for environmental protection and churchgoing are significant positive drivers of water conservation behavior, as are several individual characteristics like having young children, being older, poorly educated, a homeowner, unemployed and retired.
藤井 健悟*; 越智 康太郎; 大渕 敦司*; 小池 裕也*
Journal of Environmental Management, 217, p.157 - 163, 2018/07
被引用回数:35 パーセンタイル:77.23(Environmental Sciences)福島第一原子力発電所事故後、高濃度の放射性セシウムにより汚染された大量の都市ごみ焼却飛灰は、環境回復の観点から大きな問題となっている。本研究では、福島県で採取した都市ごみ焼却飛灰中放射性セシウムの物理化学的特性を、粒形分別と環境省告示第13号試験により評価した。結果から、都市ごみ焼却飛灰中放射性セシウムの放射能濃度とシルバイトなどの共存物質含有量は、都市ごみ焼却飛灰の粒形に応じて変化することが分かった。粉末X線回折分析の結果、水溶性の放射性セシウムはCsClとして存在し、難溶性の放射性セシウムは非晶質物質の内部に結合していることが分かった。