Article
Environmental Sciences
Dagmara Struminska-Parulska, Jerzy Falandysz, Aleksandra Moniakowska
Summary: This study aimed to understand the accumulation of radioactivity in the dried sclerotium of Wolfiporia cocos and assess the potential effective dose for consumers. The research found that the intake of W. cocos sclerotia would not significantly change the effective radiation doses, indicating that the consumption appears to be safe from a radiological protection point of view.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Analytical
Josephine T. Kristensen, Xiaolin Hou
Summary: A method for determining the content of Po-210 in soil and sediment samples without the use of hydrofluoric acid has been developed. The method involves fusion of samples with sodium hydroxide and sodium peroxide, followed by extraction and measurement using alpha spectrometry.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Engineering, Marine
Osip Kokin, Irina Usyagina, Nikita Meshcheriakov, Roman Ananiev, Vasiliy Arkhipov, Aino Kirillova, Stepan Maznev, Sergey Nikiforov, Nikolay Sorokhtin
Summary: Ice scours are formed when floating icebergs or sea ice hummocks penetrate unlithified seabed sediments. The traditional classification of ice scours based on water depth does not consider current climatic changes. Using Pb-210 dating, the studied ice scour in the Kara Sea is estimated to have formed around 1810 AD. The rate of sedimentation in the ice scour is approximately 0.33 cm/year.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Feng Lin, Cai Lin, Wen Yu, Xiuwu Sun, Hui Lin
Summary: Radioactivity levels of Pb-210 and Ra-226 were detected in sediment core samples from the polymetallic nodule area in the Clarion-Clipperton Zone (CCZ). The distribution of Pb-210(ex) in the sediment core showed variations at different depths, and the bioturbation coefficients estimated were higher compared to previous studies.
Article
Environmental Sciences
Weifeng Yang, Xiufeng Zhao, Laodong Guo, Bangqin Huang, Min Chen, Ziming Fang, Xiao Zhang, Yusheng Qiu
Summary: The study found that soot in the northeastern South China Sea primarily originates from sediment resuspension on the shelf/slope, with increasing concentrations observed in the twilight zone. Export flux of soot from the euphotic zone was calculated using Po-210 deficits, showing the importance of sediment as a source of soot in the region. Coupling sediment-derived soot and Po-210-derived POC fluxes revealed a Martin Curve-like flux attenuation in the twilight zone, suggesting the potential for soot to constrain in situ POC fluxes and transport.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Engineering, Environmental
H. N. Hunter, C. J. B. Gowing, A. L. Marriott, J. H. Lacey, S. Dowell, M. J. Watts
Summary: This communication presents a validation approach using varve counting to improve the accuracy of Pb-210 measurement data and generate more precise chronologies. This is crucial for predicting environmental changes such as sedimentation rates, climate change, pollution pathways, and land degradation.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Environmental Sciences
Lyubov M. Shaposhnikova, Natalya G. Rachkova, Tatyana P. Shubina
Summary: The aim of this study was to assess the ability of two moss species, Sphagnum girgensohnii and Pleurozium schreberi, to accumulate and retain Po-210 and Pb-210. The results showed that these moss species are effective biogeochemical barriers and long-term storage for Po-210 and Pb-210.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Shan Gao, Xiong Yang, Yucheng Ding, Yihui Xia, Yumiao Song, Jiaying Liu, Kewu Pi, Andrea R. Gerson
Summary: In this study, a combination of electrokinetic and chemical immobilization was used to remediate Cd and Pb polluted river sediments. The immobilization ratios for Cd and Pb were achieved by adjusting the concentrations of the immobilization reagents and the applied voltage. The enhancement effect of the electric field is mainly due to the increased contact between the immobilization reagents and the heavy metals.
Article
Environmental Sciences
Pinar Isel, Latife Sahin, Nurgul Hafizoglu, Ela Ganioglu, Aysegul Mulayim
Summary: This study measured the concentrations of natural and artificial radionuclides in sediment and soil samples from the Bosphorus in Istanbul using gamma-ray spectrometry. The results showed average activity concentrations of U-238, Th-232, K-40, and Cs-137 in sediment samples to be 11.41 +/- 0.21 Bq kg(-1), 6.87 +/- 0.16 Bq kg(-1), 369.61 +/- 3.41 Bq kg(-1), and 6.54 +/- 0.11 Bq kg(-1) respectively, and in soil samples to be 11.65 +/- 0.18 Bq kg(-1), 9.55 +/- 0.15 Bq kg(-1), 369.43 +/- 3.09 Bq kg(-1), and 4.57 +/- 0.09 Bq kg(-1) respectively. Radiological contour maps were created based on the activity concentrations of radionuclides in the sediment samples, and the total annual effective dose due to soil samples was calculated to be 34.58 mu Sv y(-1).
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Van-Hao Duong, Duc-Thang Duong, Loat Van Bui, Thanh Tien Kim, Hue Minh Bui, Trong Dinh Tran, Trinh Trong Phan, Thanh-Duong Nguyen
Summary: The Red River in North Vietnam plays a crucial role in the region's economic development. However, it is contaminated with radionuclides due to the presence of uranium ore mines, rare earth mines, and industrial zones along its course. This study investigated the activity concentrations of Ra-226, Th-232 (Ra-228), K-40, and Cs-137 in surface sediments of the Red River. The results showed higher concentrations of natural radionuclides compared to the global average, indicating the contribution from nearby sources. Additionally, the computed indices for radiation hazard assessment were almost twice the world average values.
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2023)
Article
Environmental Sciences
Agnieszka Nobis, Dominika Chmolowska, Tomasz H. Szymura, Arkadiusz Nowak, Marcin Nobis
Summary: This study investigates the influence of physicochemical properties of soil on the distribution of river corridor plant species in the large river valleys of Central Europe. The findings suggest that plots located in closer proximity to the river, characterized by higher soil exchangeable potassium content and lower altitudes, exhibit higher coverage of river corridor plant species. Meanwhile, in plots situated along anthropogenic linear landscape elements, higher coverage of river corridor plant species is associated with higher soil exchangeable potassium content and pH values.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agriculture, Multidisciplinary
Jianghua Ye, Qi Zhang, Guoying Liu, Liwen Lin, Haibin Wang, Shunxian Lin, Yuchao Wang, Yuhua Wang, Qingxu Zhang, Xiaoli Jia, Haibin He
Summary: More than a third of tea plantations in Anxi county had been acidified. The decrease of pH value leads to an increase in the bio-availability coefficient of soil Pb content and the enrichment coefficient of Pb content in tea leaves. The lower soil pH value resulted in the increase of the absorption and accumulation of Pb by tea trees, thus an increase of Pb content in tea leaves.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Environmental Sciences
Luigi Vigano, Licia Guzzella, Laura Marziali, Giuseppe Mascolo, Giuseppe Bagnuolo, Ruggero Ciannarella, Claudio Roscioli
Summary: This study examined the temporal profiles of many organic micropollutants in a sediment core from the Lambro River, a highly anthropized tributary of the Po River. The sediment core revealed a 50-year historical record of chemical contamination discharged into the Lambro and Po Rivers. The highest risks to aquatic organisms were associated with high levels of various pollutants, with environmental legislation and improved wastewater treatments leading to recent downward trends.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Mingke Luo, Hui Yu, Qian Liu, Wei Lan, Qiaoru Ye, Yuan Niu, Yong Niu
Summary: This study investigated the accumulation, risk, distribution, and sources of heavy metals in 62 lakes along the Yangtze River. It found that most lakes were contaminated with Cd, with higher ecological risk in the middle reach and southern bank of the Yangtze River. The study also revealed that Cr originated from the natural environment, while Zn, Cu, Pb, Cd and As were affected by human activities.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Geosciences, Multidisciplinary
Yang Zhao, Chunhong Hu, Xiaoming Zhang, Xizhi Lv, Xiaolin Yin, Zhaoyan Wang
Summary: The study found significant changes in sediment discharge of the Yellow River over the past 60 years, particularly in the main trunk stream and primary tributaries. The impact of soil and water conservation measures on sediment discharge is significant, with marginal benefit analysis indicating the influence of soil erosion control on sediment reduction benefits.
Article
Environmental Sciences
Priyanka J. Reddy, Rajesh Sankhla, Probal Chaudhury
Summary: This study is of great importance for conducting H-3 contamination screening. The calibration curves constructed based on optimized parameters can accurately determine H-3 concentration in various water samples.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2024)
Article
Environmental Sciences
Rafael Campos de Oliveira, Carlos Alberto de Carvalho Filho, Rubens Martins Moreira, Eliana Nonato Knupp
Summary: This study quantitatively and spatially evaluated the leachate plume from the Belo Horizonte landfill and found that the leachate contained significantly higher levels of tritium compared to rainfall. The tritium was transported towards the Coqueiros stream, with higher concentration close to the landfill slope. The study also identified factors that contribute to higher tritium levels in certain areas, such as the denser character of the leachate and the presence of rock near the surface.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2024)
Article
Environmental Sciences
T. E. Kozhakhanov, N. V. Larionova, S. N. Lukashenko, Zh. A. Baigazinov, A. M. Kabdyrakova, A. Ye. Kunduzbayeva
Summary: The paper presents the results of a long-term experiment on fruit and berry crops grown in conditions of radioactive contamination. The study aims to understand how different species of trees and shrubs accumulate artificial radionuclides, focusing on their absorption through roots from soil. The findings show that the radionuclides are not evenly distributed among the plant organs, with leaves having higher concentrations than branches and fruits. The study also provides quantitative parameters for the transfer and distribution of specific radionuclides in different parts of the crops.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2024)
Article
Environmental Sciences
Yayra Afram, Godwin Amenorpe, Elvis Asare Bediako, Alfred A. Darkwa, Isaac Kodzo Amegbor
Summary: This study evaluated the response of maize genotypes to gamma radiation and determined an effective dosage for mutation breeding. The results showed a decrease in the growth and plant characteristics of maize with increasing gamma radiation doses.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2024)
Article
Environmental Sciences
Maria Angelica Vergara Wasserman, Aline Gonzalez Viana, Michele Maria da Silva, Flavia Bartoly, Tatiane Rocha Pereira, Ronaldo Janvrot Vivone, Ana Cristina de Melo Ferreira, Daniel Vidal Perez
Summary: Public concerns about environmental protection have increased since the Fukushima accident. The soil-plant transfer factor (Fv) is an important parameter for environmental risk assessment. The study investigates the behavior of 90Sr in Brazilian soils and finds that a significant portion of 90Sr remains potentially mobile, mainly in the bioavailable phase. The behavior of 90Sr in these soils is influenced by ionic competition mechanisms and the presence of stable Sr and major nutrients. The mineralogy of the soils also plays a role in the transfer of 90Sr.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2024)
Article
Environmental Sciences
P. Pavlenko, V. Yoschenko, M. Hrechaniuk, T. Wada, V. Kashparov
Summary: Activity concentrations of 90Sr in fish in lakes within the Chornobyl Exclusion Zone exceed permissible levels, and transferring contaminated fish to clean water does not effectively reduce 90Sr content. Establishing permissible levels of 90Sr concentration only in fish fillet is appropriate for human radiation protection.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
(2024)
