Article
Environmental Sciences
Xiongyi Miao, Yupei Hao, Hongwei Liu, Zhouqing Xie, Dan Miao, Xudong He
Summary: The study found that HMs levels in sediments in karst areas are low, but Cd and Zn concentrations in fish are significantly higher than the soil baseline. Most HMs are present in the residual fraction, with very low proportions of exchangeable fractions that could impact bioaccumulation. Some fish samples exceeded the maximum recommended limit for certain HMs. Environmental factors have a significant impact on HMs bioconversion, especially the proportions of different HM species.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Biotechnology & Applied Microbiology
Amalia Lara Bursztyn Fuentes, Luis Ignacio do Carmo, Anna Balaguer Grimaldo, Cristian Weigandt, Alejandra de los Rios, Alicia Fabrizio de Iorio, Alicia Elena Rendina
Summary: This study aimed to investigate the phytotoxicity of two different carbonaceous amendments on highly heavy metal-concentrated dredged sediments, and found that under appropriate conditions, these amendments can improve plant germination index and reduce toxicity towards heavy metals.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Environmental Sciences
Kangkang He, Jingfu Wang, Quan Chen, Fengxue Wu, Xiaohong Yang, Jingan Chen
Summary: The study analyzed the spatial distribution of microplastics (MPs) in sediments of the Wujiang river basin in Southwest China to investigate the influence of cascade dams on MPs migration. The results showed high abundance of MPs in the sediments, with polypropylene and polyethylene being the main chemical components. Statistical analysis revealed that GDP and basin area of cascade reservoirs were the dominating factors affecting the distribution of MPs in the Wujiang river basin.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Hae Jong Yang, Ki Moon Bong, Tae-Woo Kang, Soon Hong Hwang, Eun Hye Na
Summary: The study investigated particle size distribution and heavy metal concentrations in surface sediments of streams and lakes in the Seomjin River Basin by comparing with Sediment Quality Guidelines (SQGs). Different origins were identified through statistical and geochemical approaches. The results showed that while some heavy metal concentrations were higher in the Boseong River, overall pollution levels in the basin were not severe.
Article
Environmental Sciences
Dejun Kang, Gongyi Zheng, Juhua Yu, Qiuwen Chen, Xiangzhou Zheng, Jicheng Zhong, Yushu Zhang, Hong Ding, Yinlong Zhang
Summary: In complex watersheds, the impact of river damming on heavy metal distribution in sediments and ecological risks can vary. This study aimed to investigate the driving mechanisms of hydropower reservoirs on heavy metal distribution in sediments. The results indicated that dam construction and operation can exacerbate heavy metal accumulation and ecological risks in reservoir sediments.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Article
Environmental Sciences
Xiaozhu Liu, Qunqun Liu, Yanqing Sheng
Summary: Excessive nutrients in aquatic ecosystems are the main driving factors for eutrophication and water quality deterioration. This study investigated the effects of nitrate nitrogen and phosphate addition in the overlying water on the environmental behaviors of chromium, copper, and cadmium in coastal river sediments. It was found that microorganisms play an important role in reducing the concentration of heavy metals in sediments and overlying water by enhancing the binding ability of phosphate and heavy metal ions.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Amali Herath, Dibya Kanti Datta, Gholamreza Bonyadinejad, Maryam Salehi
Summary: Microplastics can transport heavy metals from urban environments to water resources through stormwater runoff. This study examines the competition between microplastics and sediments for heavy metal uptake, and the effects of photodegradation on the behavior of microplastics. The results show higher accumulations of Cu, Zn, and Pb on photodegraded microplastics compared to new microplastics, indicating the importance of considering the photodegradation process in understanding the fate and transport of heavy metals. The leaching of dissolved organic carbon from photodegraded microplastics may also affect the uptake of heavy metals by sediments.
Article
Multidisciplinary Sciences
Zijian Shen, Zijian Shang, Faxin Wang, Yanhong Liang, Youcun Zou, Fei Liu
Summary: This study comparatively analyzed the bacterial community composition and diversity in the sediments of different lakes in the collapsed lake area of Huaibei using high-throughput sequencing and environmental factor analysis. The results showed significant differences in bacterial community compositions among the lakes, with DH having the largest number of species and NH having higher species diversity. The environmental factors of pH, TN, and TP were found to be the main factors affecting the bacterial community composition in the sediments.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Shenghui Jiang, Xin Ni, Haiyan Cheng, Guangming Zhao
Summary: We analyzed the heavy metal (Cr, Cu, Ni, Pb, and Zn) content and particle size of surface sediment samples taken from 123 sites in the Bohai Strait of China. All five heavy metals showed a similar distribution in the strait, with lower concentrations in the middle and higher concentrations at the sides. The Laotieshan Channel had the lowest heavy metal content due to rapid currents. Only 1.6% of the sample sites were polluted by Cr and Cu, according to our pollution index (Pi) calculations. Few sites were polluted by heavy metals based on geo-accumulation index (Igeo) values. Pb levels were influenced by terrigenous inputs and clay adsorption, while the levels of other heavy metals (Cr, Cu, Ni, and Zn) were mainly controlled by terrigenous inputs.
MARINE POLLUTION BULLETIN
(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
Muralidharan Ratheesh Kumar, Krishnan Anoop Krishnan, Varghese Vimexen, Abdul Kareem Faisal, Mohan Mohind, Vijayan Arun
Summary: The present study investigates the contamination of heavy metals in the sediments of a tropical ecosystem in India, and assesses the factors responsible for the dominance of specific macrobenthic communities, particularly in estuarine sediments. The results show that the concentration of heavy metals follows the general trend of Cr > Cu > Zn > Ni > Pb > Cd > Hg, regardless of any seasonal alteration. The estuarine region is considerably contaminated by Cu and Cr, while the riverine zone remains less contaminated. The clay loam/clay/heavy clay textures are preferred by polychaetes and bivalves in the estuarine and marine zone.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Dickson Boboria, Matakite Maata, Francis S. Mani
Summary: The study reveals that the heavy metal levels in sediments of Marovo Lagoon are significantly higher compared to other Pacific studies, attributed to intense logging activities around the bay and other potential anthropogenic sources such as mining and waste discharge.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Valentina V. Sattarova, Kirill I. Aksentov
Summary: The analysis of heavy metal concentrations in deep-sea sediments from the Kuril Basin and Kuril Kamchatka Trench area revealed enrichment by natural factors, with low ecological risk associated with all heavy metals in the study area.
MARINE POLLUTION BULLETIN
(2021)
Article
Chemistry, Analytical
Barbara P. Mazzilli, Leticia G. S. Lavieri, Josiane S. Soares, Flavio R. Rocha, Matheus Angelini, Deborah I. T. Favaro
Summary: The study found that sediments in the High Tiete region are heavily polluted, followed by the Middle Tiete region, while the Low Tiete region shows no evidence of contamination. Additionally, the concentrations of natural radionuclides are comparable to world average values, and can be considered as baseline levels for the region.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2022)
Article
Environmental Sciences
Tcogto Zh. Bazarzhapov, Valentina G. Shiretorova, Larisa D. Radnaeva, Elena P. Nikitina, Selmeg V. Bazarsadueva, Galina S. Shirapova, Suocheng Dong, Zehong Li, Shiqi Liu, Ping Wang
Summary: This study investigated the heavy metal pollution in the Lake Gusinoe basin in Russia. The results showed low pollution levels overall, but moderate pollution in the central part of the lake. Fresh water scarcity and heavy metal pollution are important issues in global climate change.
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)