Article
Environmental Sciences
Jiang Liu, Benqi Lu, Alexandre J. Poulain, Rui Zhang, Tong Zhang, Xinbin Feng, Bo Meng
Summary: Rice consumption is a major pathway for human methylmercury exposure in inland China, especially in mercury contaminated regions. However, high levels of methylmercury are still found in rice, calling for reconsideration of the bioavailability of mercury species in paddy soils. Incubation experiments showed that different Hg(II) species have varying impacts on mercury methylation at different mercury concentrations, emphasizing the importance of considering site-specific characteristics and the nature of mercury substrates for determining net methylmercury production.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Yanwei Liu, Hui Tao, Ying Wang, Yingying Fang, Yuping Xiang, Guangliang Liu, Yingying Guo, Jiyan Liu, Yongguang Yin, Yong Cai, Guibin Jiang
Summary: This study investigated the foliar oxidation of gaseous elemental mercury using poplar as a model tree species. The results showed that the oxidation of gaseous mercury in foliage can occur through a two-step single-electron transfer process, involving the formation of Hg(I) and Hg(II) mediated by nonenzymatic and enzymatic reactions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2021)
Article
Environmental Sciences
Akane Yamakawa, David Amouroux, Emmanuel Tessier, Sylvain Berail, Ina Fettig, Julien P. G. Barre, Jan Koschorreck, Heinz Rudel, Olivier F. X. Donard
Summary: The Hg isotopic composition in spruce shoots mainly consists of gaseous element mercury (GEM) uptake, showing slight changes over a study period of more than 30 years despite a significant decrease in Hg concentration. Mass-dependent fractionation and odd mass-independent isotopic fractionation exhibited slight variations with time.
Article
Environmental Sciences
Yuting Hu, Shixing Wang, Libo Zhang, Fan Yang
Summary: In this study, a novel MOF adsorbent (UiO-66-QU) was prepared and characterized, and its Hg(II) adsorption performance was investigated. The results showed that UiO-66-QU has better Hg(II) adsorption capacity than UiO-66-NH2, and the adsorption process is mainly monolayer chemical adsorption. The adsorbent exhibits excellent reusability and selectivity, making it promising for the removal of Hg(II) from wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Melissa Mendez-Lopez, Cristina Eimil-Fraga, Flora Alonso-Vega, Roque Rodriguez-Soalleiro, Esperanza Alvarez-Rodriguez, Manuel Arias-Estevez, Juan Carlos Novoa-Munoz
Summary: This study investigates the variation of mercury concentration and pools in soils collected from Pinus pinaster stands along a coastal-inland transect in SW Europe. The results show that total mercury concentration is higher in the organic subhorizons compared to the mineral soil, and it decreases with depth. The climatic factors, particularly precipitation, along the transect have a significant influence on the variation of total mercury concentration in the organic subhorizons.
ENVIRONMENTAL RESEARCH
(2023)
Review
Environmental Sciences
Alex Kwasi Saim
Summary: The artisanal and small-scale gold mining sector in Ghana continues to grow, but the impacts caused by mercury use are becoming increasingly severe. Despite previous bans and increased monitoring efforts, the country has not been successful in significantly reducing mercury use and its associated impacts. The lack of mercury alternatives, funding, and education support makes addressing this issue more challenging.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Analytical
Miao Shi, Bridget A. Bergquist, Anwen Zhou, Yaqiu Zhao, Ruoyu Sun, Jiubin Chen, Wang Zheng
Summary: The efficiency of cold vapor generation (CVG) method for sample introduction in mercury (Hg) isotope analysis and its impact on Hg isotope analysis have been investigated in this study. The efficiency of Hg CVG can be affected by the sample uptake rate, sample matrix, and the design of the gas-liquid separator (GLS). Matrix separation, optimal GLS design, and tuning the sample uptake rate are crucial for obtaining high accuracy and precision in Hg isotope analysis.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Environmental Sciences
Rula Sa, Zhangwei Wang, Zehua Xu, Qingpeng Zhao, Qiuliang Zhang, Xiaoshan Zhang
Summary: Forests play a significant role in storing atmospheric mercury, and understanding the mercury pools in forest ecosystems is essential for understanding the global mercury cycle. This study investigated the characteristics of Hg concentration and distribution in forests of different ages in the Daxing'an Mountain, revealing differences in Hg absorption and accumulation among different tree species and tissues. The results are valuable for assessing the role of forest ecosystems in the atmospheric mercury cycle and estimating potential mercury emissions from biomass burning during forest wildfires.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
S. Zhao, A. Terada, K. Nakamura, M. Nakashima, T. Komai, S. Riya, M. Hosomi, H. Hou
Summary: The study revealed that soil moisture and temperature significantly influence Hg emission and Hg fractions, with Hg flux increasing with higher temperature and soil moisture. Soil moisture impacts Hg fractions, and the relationship between activation energy values and soil moisture varies across different soils.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Review
Plant Sciences
Jiefei Chen, Shangyan Hao, Gary Banuelos, Xinbin Zhou
Summary: Mercury (Hg) enters the human body through the food chain after being absorbed by plants. Exogenous selenium (Se) has been suggested as a potential solution to reduce Hg concentration in plants, but the literature does not provide consistent findings. This meta-analysis of 1,193 data records from 38 publications found that a Se/Hg ratio of 1-3 is optimal for inhibiting Hg accumulation in plants. Exogenous Se significantly reduced Hg concentrations in overall plant species, rice grains, and non-rice species by approximately 24-28%. Both Se(IV) and Se(VI) were effective in reducing Hg accumulation, with Se(VI) showing stronger inhibition. Se also decreased the transfer of Hg to rice grain, suggesting its potential in reducing Hg exposure through the food chain.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Environmental Sciences
Fan Qin, Marc Amyot, Andrea Bertolo
Summary: The production of highly toxic monomethylmercury (MeHg) is unevenly distributed in the water column. The role of water column heterogeneity, especially zooplankton grazers, in mercury (Hg) cycling is still not well understood. This study found a significant association between the presence of zooplankton and the concentrations of dissolved total Hg (DTHg) and total Hg (THg) in the water. Results suggest that the heterogeneity of biotic factors, including phytoplankton and zooplankton, plays a key role in the cycling of total Hg and MeHg in boreal lakes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Rahul V. Khose, Goutam Chakraborty, Mahesh P. Bondarde, Pravin H. Wadekar, Alok K. Ray, Surajit Some
Summary: Therapeutic guava leaf was used to green synthesize novel red-fluorescent graphene quantum dots (G-GQD) for sensitive and selective detection of Hg(ii) in aqueous media, showing a potential for rapid, selective, and sensitive fluorescence sensing response towards polluted water bodies.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Environmental Sciences
Mae Sexauer Gustin, Sarrah M. Dunham-Cheatham, Natalie Allen, Nicole Choma, William Johnson, Sam Lopez, Armistead Russell, Eric Mei, Olivier Magand, Aurelien Dommergue, Tyler Elgiar
Summary: The Hg research community needs more accurate methods for measuring atmospheric Hg concentrations and chemistry. The Reactive Mercury Active System (RMAS) was used to determine RM, gaseous oxidized mercury, and PBM concentrations and chemistry. The study found that particulate-bound Hg was dominant in Atlanta, N and S Hg-II compounds were primarily present in Great Salt Lake, halogenated compounds were lowest when air was derived from the Midwest in Guadalupe Mountains National Park, and halogenated compounds were primarily present with some N, S, and organic Hg-II compounds potentially associated with biological activity in Amsterdam Island, Southern Indian Ocean. The GEOS-Chem model was used to predict measurements at five field sites, and the results showed some differences between the model values and observations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Multidisciplinary Sciences
Runsheng Yin, Di Chen, Xin Pan, Changzhou Deng, Liemeng Chen, Xieyan Song, Songyue Yu, Chuanwei Zhu, Xun Wei, Yue Xu, Xinbin Feng, Joel D. Blum, Bernd Lehmann
Summary: This study demonstrates distinct mass-independent mercury isotope fractionation in global basalts, revealing mantle Hg isotope heterogeneity and the large-scale translithospheric Hg recycling through plate tectonics.
NATURE COMMUNICATIONS
(2022)
Article
Ecology
Hakan Pleijel, Jenny Klingberg, Michelle Nerentorp, Malin C. Broberg, Brigitte Nyirambangutse, John Munthe, Goran Wallin
Summary: The study found that mercury concentration in plant foliage increases with age, and atmospheric mercury uptake significantly influences mercury levels in plant leaves. Additionally, older foliage had higher mercury levels compared to younger foliage, highlighting the importance of understanding mercury biogeochemistry for assessing environmental impacts.
Article
Microbiology
Charlotte Berthelot, Asfaw Zegeye, Dalia A. Gaber, Michel Chalot, Philipp Franken, Gabor M. Kovacs, Corinne Leyval, Damien Blaudez
Article
Environmental Sciences
Petra S. Kidd, Analia Alvarez, Vanessa Alvarez-Lopez, Andrea Cerdeira-Perez, Beatriz Rodriguez-Garrido, Angeles Prieto-Fernandez, Michel Chalot
Summary: The study evaluated the diversity of cultivable bacteria associated with plants in phytomanaged soils contaminated with mixed trace metals and polycyclic aromatic hydrocarbons in Pierrelaye, France. The focus was on identifying potential bacteria for remediation of contaminated sites, with an emphasis on plant growth-promoting substances and resistance to trace metals. Proteobacteria and Actinobacteria were found to dominate the isolates, with differences in taxonomic diversity observed between plant species and remediation treatments.
Article
Environmental Sciences
Loic Yung, Coralie Bertheau, Flavien Tafforeau, Cyril Zappelini, Benoit Valot, Francois Maillard, Marc-Andre Selosse, Chloe Viotti, Philippe Binet, Genevieve Chiapusio, Michel Chalot
Summary: This study characterized the mycobiome associated with nettle and poplar roots co-occurring at a trace-metal contaminated site. Nettle was found to have a distinct mycobiome dominated by endophytic Pezizomycetes and saprotrophic genus Kotlabaea, while poplar roots were associated with ectomycorrhizal fungi such as Inocybe and Tuber species. The study also revealed some connections between the mycobiomes of poplar and nettle roots, suggesting a need to reconsider fungal networking beyond known mycorrhizal interactions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Maxime Louzon, Benjamin Pauget, Frederic Gimbert, Nadia Morin-Crini, Janine W. Y. Wong, Benat Zaldibar, Tiago Natal-da-Luz, Natalia Neuwirthova, Christina Thiemann, Bernard Sarrazin, Mireia Irazola, Caroline Amiot, Dominique Rieffel, Jose P. Sousa, Michel Chalot, Annette de Vaufleury
Summary: This study compared the results provided by in situ and ex situ bioassays for assessing the environmental risk of contaminated soils using land snails. The in situ bioassay was found to be more reflective of environmental parameters affecting bioavailability, while ex situ bioassay generally yielded higher risk coefficients. Both approaches were complementary in evaluating the environmental risk of contaminated soils.
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2022)
Editorial Material
Microbiology
Michel Chalot, Markus Puschenreiter
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Engineering, Environmental
Abdoulaye Mahamat Malabad, Fabienne Tatin-Froux, Gilles Gallinet, Jean-Michel Colin, Michel Chalot, Julien Parelle
Summary: The study aimed to evaluate the canopy conductance of tree species and the content of elements in leaves, identifying Ostrya carpinifolia as a potentially useful species for managing landfill leachates.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Nicolas Grosjean, Marie Le Jean, Jean Armengaud, Adam Schikora, Michel Chalot, Elisabeth M. Gross, Damien Blaudez
Summary: The extensive use and release of rare earth elements have raised concerns about environmental and ecosystem impacts. Studies have revealed differences in the molecular responses of the model organism Saccharomyces cerevisiae to lanthanum and ytterbium, affecting multiple crucial biological metabolic pathways and signaling pathways.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Chemistry, Physical
Chloe Viotti, Katharina Albrecht, Stefano Amaducci, Paul Bardos, Coralie Bertheau, Damien Blaudez, Lea Bothe, David Cazaux, Andrea Ferrarini, Jason Govilas, Hans-Joerg Gusovius, Thomas Jeannin, Carsten Luehr, Joerg Muessig, Marcello Pilla, Vincent Placet, Markus Puschenreiter, Alice Tognacchini, Loic Yung, Michel Chalot
Summary: Stinging nettle is a perennial crop with low fertilizer and pesticide requirements, well adapted to various environmental conditions. It has been successfully grown in Europe and has the potential to replace artificial fibers in industries such as textiles and automotive. This review provides a historical perspective on nettle varietal selection, as well as an overview of its biology, adaptability, genetics, and cultivation and processing features. The potential uses in industrial processes and future avenues of research on this high-value plant for the global fiber market are also discussed.
Article
Ecology
Abdoulaye Mahamat Malabad, Jose Zapata-Carbonell, Nicolas Maurice, Lisa Ciadamidaro, Stephane Pfendler, Fabienne Tatin-Froux, Andrea Ferrarini, Flavio Fornasier, Marie-Laure Toussaint, Julien Parelle, Michel Chalot
Summary: The addition of digestate to red gypsum substrate significantly improved soil properties and promoted the growth and physiology of birch trees. Appropriate concentration of digestate increased plant biomass, enhanced leaf nutrient content, and reduced the accumulation of contaminants.
ECOLOGICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Marie Le Jean, Emmanuelle Montarges-Pelletier, Camille Rivard, Nicolas Grosjean, Michel Chalot, Delphine Vantelon, Kathryn M. Spiers, Damien Blaudez
Summary: Rare earth elements (REEs) are strategic metals involved in low-carbon energy conversion, but their increasing dissemination into ecosystems raises concerns about their toxicity. REE-accumulating plants are important for studying REE transfer to the trophic chain and for phytoremediation. In this analysis, the accumulation sites of REEs in the fern Dryopteris erythrosora were studied using synchrotron X-ray mu fluorescence, providing valuable knowledge on the physiology of REE-accumulating ferns and the expansion of phytotechnologies for REE-enriched or REE-contaminated soils.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jordan Collot, Philippe Binet, Abdoulaye Mahamat Malabad, Benjamin Pauget, Marie-Laure Toussaint, Michel Chalot
Summary: This study aimed to assess the accumulation of trace elements in an industrial wasteland's soil and plants and determine the extent of transfer to humans. It also aimed to analyze the effects on vegetation and human health and identify bioindicator plants that represent the main contaminants' levels. The results showed a decrease in plant biodiversity in areas with high trace element levels, favoring tolerant species like Urtica dioica and Hedera helix. The dominant species, Alliaria petiolata, had the highest concentrations of Zn, Ni, and Cd, making it a potential bioindicator for Zn levels.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Jose Zapata-Carbonell, Lisa Ciadamidaro, Julien Parelle, Michel Chalot, Fabienne Tatin-Froux
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2020)