Article
Multidisciplinary Sciences
Yukihisa Sanada, Yoshimi Urabe, Toshiharu Misonou, Takehiko Shiribiki, Takahiro Nakanishi, Yusuke Watanabe, Tadahiko Tsuruta
Summary: This study visualized the distribution of radiocesium in sediment around the Fukushima Daiichi Nuclear Power Plant using data from a towed gamma-ray detection system, with the uncertainty of the map evaluated through comparison with sediment core sample data. The characteristics of radiocesium distribution were analyzed considering seafloor topography and geological maps, while the formation of Cs-137 anomaly at estuaries was studied using contour maps. Validation of the map showed good agreement with actual sediment core samples, with the Cs-137 concentration decreasing over time due to uncertainties.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Akira Watanabe, Mizuo Kajino, Kazuhiko Ninomiya, Yoshitaka Nagahashi, Atsushi Shinohara
Summary: After the Fukushima nuclear accident, atmospheric measurements of Cs-134 and Cs-137 were conducted in Fukushima city from March 2011 to March 2019. The study found that airborne surface concentrations and deposition of radiocesium were higher in winter and lower in summer, opposite to the trends observed in a contaminated forest area. The effective half-lives of 137Cs before 2015 were significantly shorter than those after 2015, possibly due to the faster discharge of dissolved radio-Cs from local ecosystems compared to particulate radio-Cs. Biotite was suggested to play a key role in the behavior of particulate radio-Cs after 2014. However, the relationship between seasonal variations in particle size distributions and the sources of particles is not fully understood.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Physics, Multidisciplinary
Christina D. Ganzha, Dmitri I. Gudkov, Igor I. Abramiuk, Oleksandr Ye. Kaglyan
Summary: Skeletal abnormalities in common roach and common rudd from the cooling pond of the Chornobyl NPP were studied. Various types of abnormalities were observed, including additional processes of neural and haemal spines, vertebral fusions, deformations of vertebrae, spine, and ribs. The number and severity of abnormalities were found to be correlated with the level of radioactive contamination in the water bodies.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2023)
Article
Geosciences, Multidisciplinary
Feng Gu, Xinbao Zhang, Bing Ren, Minghua Zhou
Summary: A new model has been developed in this study to date recent silting soils in debris flow deposits based on changes in Pb-210(ex) concentrations in surface soil layers. The model was validated and showed good agreement with actual values.
Article
Geosciences, Multidisciplinary
Marcos Tassano, Adriana Montanez, Lucia Nunez, Tania Trasante, Joan Gonzalez, Joaquin Irigoyen, Pablo Cabral, Mirel Cabrera
Summary: The study measures microbiological and physicochemical variables in superficial soil, and demonstrates spatial correlations and causalities between these variables. The results reveal connections between soil water content, environmental radionuclides, and soil microbial activity, highlighting the importance of soil management practices. The combination of environmental radionuclide patterns and microbiological indicators offers a holistic approach to evaluate soil conservation status and anthropogenic disturbance impacts.
Article
Multidisciplinary Sciences
Terumi Dohi, Yoshihito Ohmura, Kazuya Yoshimura, Takayuki Sasaki, Kenso Fujiwara, Seiichi Kanaizuka, Shigeo Nakama, Kazuki Iijima
Summary: The study found that the Cs-137 inventory in lichens from Fukushima was significantly higher than in adjacent barks, and that the distribution of radioactivity was heterogeneous in both lichens and barks. Lichens were able to capture fine particles, including radiocaesium particles, with radioactivity concentrated more towards their interiors.
Article
Multidisciplinary Sciences
Takuya Manaka, Masatake G. Araki, Shinta Ohashi, Naohiro Imamura, Wataru Sakashita, Sumika Ogo, Masabumi Komatsu, Tadashi Sakata, Yoshiki Shinomiya
Summary: Cs-137 released in the Fukushima Dai-ichi Nuclear Power Plant accident is still present in the forest ecosystem. The mobility of Cs-137 in Japanese cedar and konara oak was examined, showing differences in leaching percentages in various parts of the trees. Greater Cs-137 mobility was observed in konara oak compared to Japanese cedar. This suggests a more active cycling of Cs-137 in konara oak.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Analytical
Serdar Dizman, Tolga Akdemir, Cafer Mert Yesilkanat, Vagif Nevruzoglu, Esra Bal, Recep Keser
Summary: In this study, the concentrations of natural and artificial radioactivity in sediment samples from Savsat Black Lake were determined. The results showed that the sediments in the study area do not pose any health risk for visitors.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
S. N. C. Santos, K. T. Paula, F. A. Couto, M. H. M. Facure, D. S. Correa, C. R. Mendonca
Summary: This study demonstrates, for the first time, the fabrication of Type II waveguides in transparent silica xerogel using femtosecond laser micromachining. Different modes of the waveguides were confirmed by finite elements simulation and guiding losses were observed to be similar to other materials.
Article
Chemistry, Multidisciplinary
Jiarong Zhang, Long Chen, Xing Dai, Lixi Chen, Fuwan Zhai, Weifeng Yu, Shikai Guo, Lijiang Yang, Lanhua Chen, Yugang Zhang, Linwei He, Changlun Chen, Zhifang Chai, Shuao Wang
Summary: This study demonstrates the potential application of ultrastable crystalline zirconium phosphonate framework (SZ-7) for efficient removal of strontium under highly alkaline conditions, with high adsorption capacity and in-depth removal performance, offering a new solution for Sr-90 removal in highly alkaline nuclear waste.
CHEMICAL COMMUNICATIONS
(2021)
Review
Biology
Olga Belyaeva, Nona Movsisyan
Summary: The article summarizes the evolution of radioecological studies conducted by female scientists in Armenia from 1950 to 2020. The results obtained revealed the distribution and accumulation characteristics of naturally occurring radioactive materials (NORM) and artificial radionuclides in various environments. National environmental monitoring programs were implemented to identify migration pathways of NORM and artificial radionuclides and assess exposure to both natural and induced radiation.
INTERNATIONAL JOURNAL OF RADIATION BIOLOGY
(2022)
Article
Environmental Sciences
Evgeny Yakovlev, Andrey Puchkov, Sergey Druzhinin
Summary: This article studies the activity of technogenic and natural radionuclides in the bottom sediments of the Kola coast of the Barents Sea. The accumulation of radioactivity is characterized and assessed through particle size distribution and physicochemical parameters. The activity levels of natural radionuclides are slightly higher in the coastal zone compared to the central areas of the Barents Sea, while the activities of technogenic radionuclides are relatively low. There is no significant influence of local sources on the transformation of the technogenic radiation background.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Rocio Baro, Christian Maurer, Jerome Brioude, Delia Arnold, Marcus Hirtl
Summary: This study investigates the environmental impacts of wildfires in the Chernobyl Exclusion Zone in April 2020, focusing on the dispersion of Cs-137 and the effects on air quality and health. Results show that black carbon and carbon monoxide plumes from the fires agreed with satellite observations, while the re-suspended Cs-137 emissions were correlated with smoke emissions on certain days.
Article
Limnology
Kiyoshi Tanaka, Seiya Nagao, Yujiro Kitade, Masato Niki, Takaaki Katsumata, Toru Miyama, Hiroshi Yoshinari
Summary: The Tohoku earthquake and tsunami in Japan in 2011 caused severe damage to the Fukushima nuclear power plant. A shipboard survey was conducted to study the spread of radioactive cesium in the coastal ocean, revealing a broad distribution of cesium and low-salinity water caused by high river discharge associated with a typhoon.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Ivanka Lovrencic Mikelic, Neven Cukrov, Visnja Orescanin, Krunoslav Skaro, Delko Barisic
Summary: This study used Cs-137 massic activities in vertical sediment profiles to investigate sedimentation processes in Kastela Bay. The results showed that continuous and undisturbed sedimentation mainly occurs in the central and south parts of the Bay, while the west part has more complicated sedimentation conditions. The influence of the Jadro River and anthropogenic activities in the east part of the Bay were evident. The findings can be applied to other aquatic environments with similar sedimentary processes.
