Article
Multidisciplinary Sciences
Britt D. Hall, Sichen Liu, Cameron G. J. Hoggarth, Lara M. Bates, Stacy A. Boczulak, Jamie D. Schmidt, Andrew M. Ireson
Summary: A study found that wetland ponds with nutrient-rich and stable water show higher concentrations of methylmercury, which may be attributed to the presence of organic farming and established grass surrounding the ponds. Water level patterns also have an impact on methylmercury concentrations, with ponds that are more wet having higher concentrations.
Article
Environmental Sciences
Sarah E. Janssen, Michael T. Tate, Brett A. Poulin, David P. Krabbenhoft, John F. DeWild, Jacob M. Ogorek, Matthew S. Varonka, William H. Orem, Jeffrey L. Kline
Summary: Mercury contamination in the Florida Everglades has been a persistent concern. This study examined mercury and methylmercury dynamics in different media and found strong linkages between air, water, and biota in the system. Changes in hydrology and climate were the main drivers of temporal patterns across different matrices. Unlike other regions, there was no evidence of a decline in atmospheric mercury deposition in this region. The study also identified geographic regions susceptible to higher methylmercury bioaccumulation, particularly in the Shark River Slough and Coastal areas. Improved water quality and flow rates, two key targets of the restoration program, are expected to reduce methylmercury production and exposure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Colin P. R. McCarter, Stephen D. Sebestyen, Jill K. Coleman Wasik, Coleman Wasik, Daniel R. Engstrom, Randall K. Kolka, Jeff D. Jeremiason, Edward B. Swain, Bruce A. Monson, Brian A. Branfireun, Steven J. Balogh, Edward A. Nater, Susan L. Eggert, Paris Ning, Carl P. J. Mitchell
Summary: This study presents empirical evidence of the relationship between declining sulfate deposition and changes in mercury methylation and water quality in peatlands. The results show that when sulfate additions stopped, the export of methylmercury quickly returned to baseline levels in the peatland-dominated catchment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
L. J. Hall, E. J. S. Emilson, B. Edwards, S. A. Watmough
Summary: This study evaluated changes in lake and peat porewater chemistry in the Sudbury area and found that DOC concentrations increased over time, primarily affected by increasing pH and decreasing lake SO4 concentration. Strong relationships between DOC and pH (positive) and SO4 (negative) were observed in lakes, indicating that recovery from acidic deposition is the main factor contributing to the increase in DOC in Sudbury lakes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Ting Sun, Zoe Lindo, Brian A. A. Branfireun
Summary: Climate change-driven ground warming will alter mercury cycling processes in high boreal and subarctic peatlands, particularly increasing MeHg production in subarctic peatlands. Increased soil temperature promotes microbial metabolism and organic matter turnover, resulting in higher concentrations of MeHg in the water.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Environmental Sciences
Ningla Yang, Jie Hu, Deliang Yin, Tianrong He, Xiang Tian, Shu Ran, Xian Zhou
Summary: In this study, the effects of agricultural dissolved organic matter (DOM) inputs on methylmercury (MeHg) accumulation in soil and mercury (Hg) enrichment in rice grains were investigated. Results showed that the addition of DOM from different agricultural sources significantly elevated MeHg concentrations in the soil and increased total Hg and MeHg contents in rice grains. The specific composition and properties of the DOM from rice straw, composted rice straw, and composted cow dung had the most significant impact on Hg accumulation in rice grains.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Sarah A. M. Nelson, Holger Hintelmann, Julian Aherne
Summary: Mercury concentrations in the atmosphere, surface waters, and soils have increased beyond natural levels due to human activities. This study investigated the interlinkages between mercury concentrations in soils, lake sediment, and lake water in remote upland acid-sensitive catchments. The results suggest that catchment soils are the main driver of variation in mercury concentrations in lake water and sediment in upland regions in Ireland.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Environmental Sciences
Igor Zivkovic, Matthew P. Humphreys, Eric P. Achterberg, Cynthia Dumousseaud, E. Malcolm S. Woodward, Natalia Bojanic, Mladen Solic, Arne Bratkic, Joze Kotnik, Mitja Vahcic, Kristina Obu Vazner, Ermira Begu, Vesna Fajon, Yaroslav Shlyapnikov, Milena Horvat
Summary: The speciation of mercury in the South Atlantic Ocean was investigated, and it was found that methylated mercury concentrations were related to seawater temperature, salinity, and fluorescence, while dissolved gaseous mercury concentrations were related to water column depth, macronutrient concentrations, and dissolved inorganic carbon. The linear correlation observed between dissolved gaseous mercury and dissolved inorganic carbon suggests possible production of dissolved gaseous mercury through organic matter remineralization.
MARINE POLLUTION BULLETIN
(2022)
Article
Engineering, Environmental
Jacob M. Ogorek, Ryan F. Lepak, Joel C. Hoffman, John F. DeWild, Tylor J. Rosera, Michael T. Tate, James P. Hurley, David P. Krabbenhoft
Summary: The study found that mercury concentrations in the Laurentian Great Lakes are relatively low, but game fish concentrations are close to consumption advisory limits, indicating efficient methylmercury transfer from water to game fish. The bioaccumulation factors of mercury in phytoplankton are among the highest reported in water ecosystems and are influenced by dissolved organic carbon.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
V Mangal, W. Y. Lam, H. Huang, E. J. S. Emilson, R. W. Mackereth, C. P. J. Mitchell
Summary: This study investigates the molecular composition of dissolved organic matter (DOM) and its relationship with mercury transport and transformations. High-resolution mass spectrometry is used to characterize DOM compound classes, DOM aromaticity, and the nominal oxygenation state of carbon across thirteen small boreal forest streams in central Canada. The results show significant differences in the abundance and classes of DOM compounds correlated with inorganic mercury and methylmercury concentrations across seasons and between mercury forms. Nitrogen and sulfur containing DOM compounds are most often positively correlated with inorganic mercury concentrations in late spring, while low-oxidized lignins are more important in fall. Low-oxidized lignins and hydrolysable tannins account for a large proportion of DOM-MeHg correlations, regardless of season. The study also reveals that the strongest correlations between inorganic mercury and DOM occur across a wide range of carbon oxygenation states, suggesting that DOM involved in inorganic mercury transport encompasses a wide range of polarities and thermodynamic stabilities. In contrast, DOM molecules exclusively correlated with MeHg concentrations have more positive carbon oxygenation states and aromatic qualities, indicating preferential transport of MeHg with more stable and aromatic DOM molecules. DOM molecules correlated with both inorganic mercury and MeHg concentrations are only found in late spring.
Article
Automation & Control Systems
Sandipan Prasad Chakravarty, Anurag Sharma Roy, Aritra Sinha, Sangipran Baishya, Prasanta Roy
Summary: This paper addresses the regulation of water quality influencers in a controlled environment. A decentralized quantitative feedback theory based control strategy is used to achieve robust control. Numerical simulations and hardware-in-loop implementation show that the performance specifications are robustly met.
Article
Environmental Sciences
Jingying Xu, Van Liem-Nguyen, Moritz Buck, Stefan Bertilsson, Erik Bjorn, Andrea G. Bravo
Summary: The study identified diverse clades of potential Hg-II methylators in wetland soils, including various bacteria and archaea. It also found that local physicochemical conditions are crucial for shaping the structure of Hg methylating microbial communities in wetlands.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Article
Marine & Freshwater Biology
Yongjie Wang, Zhigang Wang, Xiangmin Zheng, Limin Zhou
Summary: The study found that the invasion of Spartina alterniflora facilitates mercury storage in wetland sediments, affects sulfur cycling, but has similar effects on MeHg production compared to native plants in the Yangtze River estuarine wetlands.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Siqi Zhang, Mingxing Wang, Jiang Liu, Shanyi Tian, Xueling Yang, Guangquan Xiao, Guomin Xu, Tao Jiang, Dingyong Wang
Summary: This study investigates the impact of biochar on the mercury (Hg) cycle in rice paddies using insights from soil dissolved organic matter (DOM). The results show that adding biochar can significantly reduce the bioaccumulation of methylmercury (MeHg) in rice plants and increase the aromaticity and molecular weight of DOM. However, biochar addition can also enhance microbial activity and MeHg production in the soil.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Review
Engineering, Marine
Daniel M. Alongi
Summary: Mangroves are carbon-rich ecosystems that release a large amount of dissolved organic carbon, dissolved inorganic carbon, and total alkalinity via lateral export. This export accounts for a significant portion of carbon output from tropical rivers. The revised blue carbon budget indicates that mangroves have high net autotrophy and carbon use efficiency.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Environmental Sciences
Attila Csaba Kondor, Anna Viktoria Vancsik, Laszlo Bauer, Lili Szabo, Zoltan Szalai, Gergely Jakab, Gabor Maasz, Marta Pedrosa, Maria Jose Sampaio, Ana Rita Lado Ribeiro
Summary: This review provides a critical overview of research on the removal efficiency of priority substances and compounds of emerging concern through bank filtration, discussing influencing factors and future challenges. The findings show that the efficiency of bank filtration is influenced by multiple factors and varies for different substances.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Xinyan Wang, Shuai Zhang, Huihui Yan, Zhao Ma, Yunshan Zhang, Haining Luo, Xueli Yang
Summary: This study investigated the association between ambient PM2.5, O3 pollution, and ovarian reserve in reproductive-aged Chinese women. The results showed that increased exposure to PM2.5 and O3 was associated with decreased AMH levels, indicating reduced ovarian reserve. Notably, the effects of O3 exposure on ovarian reserve were different from those of PM2.5 exposure.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Tingting Ma, Yanjuan Ding, Fengjiao Xu, Chen Zhang, Min Zhou, Ya Tang, Yanrong Chen, Yating Wen, Rufei Chen, Bin Tang, Shigui Wang
Summary: The dragonfly species Orthetrum albistylum can accumulate heavy metals, and its heat shock protein genes have the potential to serve as biomarkers for monitoring environmental pollutants.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Naoto Ishiwaka, Koya Hashimoto, Masayoshi K. Hiraiwa, Francisco Sanchez-Bayo, Taku Kadoya, Daisuke Hayasaka
Summary: Systemic insecticides and rising temperatures have combined effects on the abundance of Odonata nymphs in paddy fields. The standalone effect of insecticide exposure decreased the Odonata community, while nymphs decreased synergistically with temperature rise in paddy water. However, the impacts of each stressor alone varied among species.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Marco Vecchiato, Carlo Barbante, Elena Barbaro, Francois Burgay, Warren R. L. Cairns, Alice Callegaro, David Cappelletti, Federico Dallo, Marianna D'Amico, Matteo Feltracco, Jean-Charles Gallet, Andrea Gambaro, Catherine Larose, Niccolo Maffezzoli, Mauro Mazzola, Ivan Sartorato, Federico Scoto, Clara Turetta, Massimiliano Varde, Zhiyong Xie, Andrea Spolaor
Summary: The Arctic region is facing contamination from long-range pollution and local human activities. Polycyclic Aromatic Hydrocarbons (PAHs) are used as environmental indicators for emission, transport, and deposition processes. Research conducted in the Arctic surface snow in Ny-Ålesund, Svalbard from October 2018 to May 2019 shows that long-range inputs of PAHs mainly occur in winter, while the most abundant analyte retene exhibits opposite seasonal trends.
ENVIRONMENTAL POLLUTION
(2024)
Review
Environmental Sciences
Maoshui Zhuo, Zhijie Chen, Xiaoqing Liu, Wei Wei, Yansong Shen, Bing-Jie Ni
Summary: This paper discusses the application of three catalytic processes (photocatalysis, electrocatalysis, and biocatalysis) in the management of microplastic pollution, and introduces the efficiency and catalytic mechanisms of different catalysts. It also proposes the development prospects for sustainable management of microplastic pollution.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Shiyu Chen, Zhenzhen Shi, Qiang Zhang
Summary: In this study, a human physiologically based pharmacokinetic (PBPK) model of diethyl phthalate (DEP) was developed to assess its toxicity. The model considers the distribution and metabolism of DEP and its active metabolite monoethyl phthalate (MEP) in different tissue compartments. Sensitivity analysis and Bayesian Markov chain Monte Carlo (MCMC) simulations were performed to evaluate the uncertainty and variability of the model parameters. The results suggest that dermal absorption is an important route of exposure to DEP in the environment.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Bangguo Wang, Lijing Wang, Wenxi Cen, Tao Lyu, Peter Jarvis, Yang Zhang, Yuanxun Zhang, Yinghui Han, Lei Wang, Gang Pan, Kaili Zhang, Wei Fan
Summary: This study investigates the feasibility and mechanisms of a chemical-free nanobubble-based AOP for treating organic micropollutants in water. The results show that the oxygen nanobubble AOP has a significantly higher removal efficiency compared to air and nitrogen nanobubbles. The treatment performance is not affected by pH and the presence of ions. Higher initial concentrations of the micropollutant lead to slower treatment processes, but similar removal performance is achieved in the end. The presence of organic matter reduces the removal rate of the micropollutant. The results have practical feasibility for water and wastewater treatment.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Yingmei Huang, Jicai Yi, Yao Huang, Songxiong Zhong, Bin Zhao, Jing Zhou, Yuxuan Wang, Yiwen Zhu, Yanhong Du, Fangbai Li
Summary: This study investigates the impact of biochar on methylmercury (MeHg) accumulation in rice. The results show that biochar reduces MeHg levels in paddy soils by decreasing bioavailable Hg and microbial Hg methylation. Additionally, biochar decreases the uptake and translocation of MeHg in rice plants, resulting in a reduction of MeHg accumulation in rice grains.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Nengde Zeng, Fei Huang, Jiani Du, Chenghao Huang, Qian Yang, Xinhua Zhan, Baoshan Xing
Summary: This study investigates the protein targets and protein-ligand interactions related to PAH contamination in crop xylem sap using computational tools. The results show that phenanthrene has a more pronounced effect on the xylem sap proteins of maize and wheat, with maize DEPs associated with lipid biosynthesis and wheat DEPs exhibiting an increase in ABC transporters. This study provides insights into the regulation and movement of PAHs within plant xylem.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Xinwei Chen, Hao Ma, Run Wang, Man Wang, Binbin Zhu, Yanqing Cong, Xiayue Zhu, Guoqin Wang, Yi Zhang
Summary: Co3O4/TiO2-NRs electrodes with excellent photoresponse were prepared via plasma-assisted modification of Co3O4 on TiO2. The combination of Co3O4 and TiO2 improved the light utilization efficiency and showed potential for degradation of pollutants.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Wenjing Ji, Liying Song, Jing Wang, Hongqing Song
Summary: This study conducted a life-cycle assessment to examine the correlation between natural gas consumption and carbon emissions in different end uses in China. The results showed that both natural gas consumption and life-cycle carbon emissions have been increasing since 2017. Significant variations in NG life-cycle carbon emissions were found across different provinces and sectors, highlighting the need for targeted efforts to reduce carbon emissions.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Youyi Chen, Boxuan Zhang, Pojun Zhang, Guogui Shi, Hao Liang, Wu Cai, Jingyu Gao, Sumin Zhuang, Kaiyin Luo, Jiaqi Zhu, Chaoxiang Chen, Kunyu Ma, Jinrong Chen, Chun Hu, Xueci Xing
Summary: The synergistic effects of trace sulfadiazine and cast-iron corrosion scales on the formation of disinfection by-products in drinking water distribution systems were investigated. The presence of magnetite resulted in increased concentrations of DBPs due to the higher microbial activity and enhanced microbial extracellular electron transport pathway. The study highlights the importance of considering trace antibiotics pollution and corrosion scales in water sources for DBP control.
ENVIRONMENTAL POLLUTION
(2024)
Review
Environmental Sciences
Bishwa Raj Pokharel, Vijay Sheri, Manoj Kumar, Zhiyong Zhang, Baohong Zhang
Summary: This review summarizes the interactions, uptake, and transport of aluminum nanoparticles (Al-NPs) in plants, highlighting their negative effects on plant growth and development, as well as their potential to alter plant defense systems and gene expression.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Yonglu Wang, Fengsong Zhang, Xiaoyong Liao, Xiao Yang, Guixiang Zhang, Liyun Zhang, Chaojun Wei, Pengge Shi, Jiongxin Wen, Xiaorong Ju, Can Xu, Yang Liu, Ying Lan
Summary: This study aims to explore the effects of thiencarbazone-methyl center dot isoxaflutole on soil microflora and the potential mitigation mechanisms to bacterial communities. It was found that increasing the application of thiencarbazone-methyl center dot isoxaflutole resulted in increased stress on soil bacterial community structure and diversity. Increasing soil pH was recognized as a key factor in improving the diversity and structure of soil microflora. Supplemental use of nitrapyrin or modified attapulgite can increase soil pH and improve bacterial diversity.
ENVIRONMENTAL POLLUTION
(2024)