Editorial Material
Environmental Sciences
Gianpaolo Guzzi, Anna Ronchi, Paolo Pigatto
Summary: The clinical manifestations of methylmercury toxicity do not differ greatly between acute and/or chronic methylmercury overexposure.
Article
Multidisciplinary Sciences
Xinke Wang, Weihong Wang, Lisa M. Wingen, Veronique Perraud, Michael J. Ezell, Jessica Gable, Thomas L. Poulos, Barbara J. Finlayson-Pitts
Summary: Although nitro and amino alkenes are common in various industries, their environmental behaviors remain unclear. This study investigated the reactions of a series of model compounds containing different combinations of these functional groups with ozone. The results showed that vinyl nitro groups significantly decrease reactivity, while amino groups have the opposite effect. The findings provide insights into the environmental fates of these emerging contaminants, such as neonicotinoid pesticides.
Article
Engineering, Environmental
Alain Manceau, Romain Brossier, Sarah E. Janssen, Tylor J. Rosera, David P. Krabbenhoft, Yves Cherel, Paco Bustamante, Brett A. Poulin
Summary: The study measured stable Hg isotope values in relevant tissues of giant petrels, finding similar isotopic fractionation values for methylmercury, Hg-tetraselenolate and mercury selenide across different tissues. Differences in isotopic values between MeHg and Hg(Sec)(4) were attributed to mass-dependent fractionation from the demethylation reaction of Hg(Sec)(4). Additionally, differences in isotopic values and mass-independent anomalies between Hg(Sec)(4) and HgSe were observed, likely due to equilibrium isotope effects of biomineralization from Hg(Sec)(4) to HgSe.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Zhengcheng Song, Ruoyu Sun, Yanxu Zhang
Summary: Mercury stable isotope analysis is a powerful tool to study the sources and biogeochemical processes of mercury. Through a three-dimensional isotope model, this study reveals the impact of dry deposition and redox transformations on the isotope compositions of global total gaseous mercury. The findings advance our understanding of atmospheric mercury transfer and transformation mechanisms.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Mehdi Moslemi-Aqdam, George Low, Mike Low, Brian D. Laird, Brian A. Branfireun, Heidi K. Swanson
Summary: The biomagnification of mercury in lake food webs was investigated in ten remote subarctic lakes in Northwest Territories, Canada. The study found significant biomagnification of mercury through the food webs of all lakes and identified forest cover as a key environmental driver of mercury biomagnification.
ENVIRONMENTAL RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Alfonso Saiz-Lopez, A. Ulises Acuna, Anoop S. Mahajan, Juan Z. Davalos, Wuhu Feng, Daniel Roca-Sanjuan, Javier Carmona-Garcia, Carlos A. Cuevas, Douglas E. Kinnison, Juan Carlos Gomez Martin, Joseph S. Francisco, John M. C. Plane
Summary: This article presents the first model of stratospheric mercury chemistry and identifies two distinct mercury chemical regimes. The study also reveals that the oxidation of mercury in the stratosphere is faster than previously assumed, but regulated by photo-reduction. The lifetime of mercury in the stratosphere shows a significant variation.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Multidisciplinary Sciences
Laura C. Motta, Joel D. Blum, Brian N. Popp, Blaire P. Umhau, Claudia R. Benitez-Nelson, Hilary G. Close, Spencer J. Washburn, Jeffrey C. Drazen
Summary: This study used mercury stable isotope ratios to investigate the cycling of methylmercury in marine particles and biota. The findings suggest that methylmercury is preferentially methylated within small marine particles and that these particles undergo more significant microbial decomposition compared to larger particles. The study also found that large particles in the equatorial ocean resemble fecal pellets and are distinct from small particles. The research provides additional evidence for methylation within marine particles and demonstrates the origin of mercury in different marine organisms.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Environmental Sciences
Buyun Du, Runsheng Yin, Xuewu Fu, Ping Li, Xinbin Feng, Laurence Maurice
Summary: This study investigated the pathways of human mercury exposure using Hg isotopic analysis, finding isotopic differences between TGM and urine samples, as well as urine and dietary components. The positive Delta Hg-199 in urine samples from the urban area was attributed to fish consumption, with fish contributing 22% of urine Hg in urban families but limited Hg in mining and background areas. The study highlighted the utility of Hg isotopes as tracers for understanding Hg sources and fates in human bodies.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Environmental Sciences
Larissa Schneider, Neil L. Rose, Lauri Myllyvirta, Simon Haberle, Anna Lintern, Jingjing Yuan, Darren Sinclair, Cameron Holley, Atun Zawadzki, Ruoyu Sun
Summary: Research indicates that mercury deposition in lake sediments in Australia's Hunter Valley and Latrobe Valley has significantly increased since the commissioning of coal-fired power plants. The Latrobe Valley has higher mercury emissions due to higher concentrations in lignite coal, lax regulation, and older pollution-control technologies adopted by coal-fired power plants in that region. Australia faces the challenge of ratifying the Minamata Convention and developing better regulation policies to reduce mercury emissions in the future.
ENVIRONMENTAL POLLUTION
(2021)
Article
Green & Sustainable Science & Technology
Zhengcheng Song, Chuan Wang, Li Ding, Min Chen, Yanxin Hu, Ping Li, Leiming Zhang, Xinbin Feng
Summary: Human activities have caused serious soil mercury pollution in industrial areas worldwide. Mercury contamination in soil was found to be significantly elevated in areas of mercury mining, gold mining, and zinc smelting, with atmospheric deposition speculated as the main pathway for soil mercury contamination. Speciation and concentration of mercury in emission gas are crucial factors for mercury pollution in surrounding soils.
JOURNAL OF CLEANER PRODUCTION
(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
Engineering, Environmental
Deming Han, Qingru Wu, Minneng Wen, Yi Tang, Guoliang Li, Yujia Ren, Yuying Cui, Zhijian Li, Jianbo Shi, Qianggong Zhang, Xiufeng Yin, Shuxiao Wang
Summary: As the Third Pole of the world, the Tibetan Plateau is sensitive to human activities. Biomass combustion is an important source of mercury emissions in the plateau, but due to limited knowledge about emission characteristics and activity levels, uncertainties exist in estimating these emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ji Chen, Gongren Hu, Jiang Liu, Alexandre J. Poulain, Qiang Pu, Rong Huang, Bo Meng, Xinbin Feng
Summary: The addition of nitrogen fertilizers in rice fields affects the accumulation of methylmercury in rice grains. Nitrate addition inhibits the formation and demethylation of methylmercury, resulting in more accumulation of methylmercury in paddy slurries. Ammonium and urea additions, on the other hand, promote the formation of methylmercury.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Xing Chen, Liugen Zheng, Ruoyu Sun, Sikui Liu, Chang Li, Yongchun Chen, Yanfei Xu
Summary: Severe environmental issues are caused by long-term coal mining activities. This study investigated the content and sources of mercury in mining subsidence area sediments (MSAS). The results showed that the mercury content in MSAS was mainly affected by clay and organic matter, and primarily derived from gangue, soil erosion, coal, fly ash, and feed.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Chemistry, Multidisciplinary
Jian Liu, Yan Hong, Chenhui Liu, Libo Zhang
Summary: The industrial design and development of microwave-induced volatilization of hazardous substances in waste heavily relies on their dielectric properties. The study found that the dielectric properties of SAC composite allow for sufficient microwave absorption within a specific temperature range. Additionally, phase analyses revealed that the microwave heating process can be divided into three stages with different volatilization behaviors of mercury compounds.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
