Article
Environmental Sciences
Daniela A. Murillo-Cisneros, Tania Zenteno-Savin, John Harley, Andrew Cyr, Pablo Hernandez-Almaraz, Ramon Gaxiola-Robles, Felipe Galvan-Magana, Todd M. O'Hara
Summary: A study was conducted to determine total mercury concentrations ([THg]) in commercial finfish and elasmobranchs from Baja California Sur (BCS), Mexico, with results showing that the relative risk of high mercury exposure is low for most species, although a few individuals had mercury concentrations exceeding recommended thresholds.
Article
Environmental Sciences
Marco Capodiferro, Esther Marco, Joan O. Grimalt
Summary: A study analyzed 1345 specimens of wild fish and seafood from the western Mediterranean Sea to assess mercury levels and determine which species meet EU recommendations for human consumption. Only 13 species were found to have mercury levels below the recommended threshold. These species, including sardines, anchovies, and squid, have lower mercury concentrations compared to others in the same environment. It is important for health authorities to pay attention to species that do not meet EU thresholds and provide appropriate health recommendations, especially for pregnant women and children.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Adam D. Grottoli, Heidi K. Swanson, Hugh G. Broders
Summary: Methylmercury (MeHg) is a toxic form of mercury that accumulates in organisms and increases in concentration as it moves up the food chain. This study found that adult female bats are able to eliminate MeHg from their tissues, resulting in a decrease in total mercury (THg) concentrations in their fur over time. Young adults may be at the highest risk of toxic effects from high MeHg concentrations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Pavanee Annasawmy, David Point, Evgeny Romanov, Nathalie Bodin
Summary: The study found variations in mercury concentrations among different organisms and regions in the southwestern Indian Ocean, with increasing Hg concentrations observed with larger body sizes. Bioaccumulation of mercury may occur in marine ecosystems.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Mehdi Moslemi-Aqdam, Leanne F. Baker, Jennifer L. Baltzer, Brian A. Branfireun, Marlene S. Evans, Brian D. Laird, George Low, Mike Low, Heidi K. Swanson
Summary: The concentrations of mercury in fish are influenced by complex biogeochemical and ecological interactions. These interactions have profound effects on fish mercury concentrations, particularly in northern latitudes. The study found that fish growth rates and concentrations of methylmercury in benthic invertebrates are important factors affecting mercury concentrations in Northern Pike. These variables are influenced by concentrations of dissolved organic carbon, methylmercury, and total mercury in lakes, which are ultimately driven by catchment characteristics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Laure Laffont, Johanna Menges, Sylvaine Goix, Sophie Gentes, Regine Maury-Brachet, Jeroen E. Sonke, Alexia Legeay, Patrice Gonzalez, Raphaelle Rinaldo, Laurence Maurice
Summary: The study in French Guiana aimed to investigate the impact of gold-mining activities on mercury concentrations and isotopic signatures in freshwater fish consumed by local residents. Analysis of Hg concentrations and isotopic ratios in fish muscles revealed differences in biogeochemical processes between fish from impacted and pristine areas, indicating potential influences of suspended particles on mercury concentrations. The study also highlighted the potential of Hg isotopes in fish as complementary tracers to understand the sources and processes of mercury accumulation in aquatic ecosystems.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Satoshi Irei
Summary: This study investigated the transformation of gaseous elemental mercury (GEM) into oxidized mercury in bulk liquid solutions. It found that sulfuric acid significantly enhanced the concentration of oxidized mercury, while pure water and seawater showed relatively stable dissolved mercury levels. The slow oxidation reaction by sulfuric acid led to higher concentrations of oxidized mercury compared to equilibrated elemental mercury concentrations.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Barbara Brodziak-Dopierala, Agnieszka Fischer
Summary: This study aimed to determine the content of Hg in fish intended for human consumption and purchased in Poland. The total Hg content of different species of marine and freshwater fish was analyzed. The highest concentration of Hg was found in tuna, which may pose a potential health risk for consumers.
Article
Environmental Sciences
Wolfgang Jansen
Summary: This study measured total mercury concentrations in lake sturgeon from five river systems in Manitoba, Canada. The concentrations were positively related to fish length and age, and the composition of fish diet was found to affect mercury concentrations. The study suggests that as lake sturgeon populations recover and harvest rates potentially increase, consumption of larger individuals should be limited.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Article
Environmental Sciences
P. J. Rudershausen, F. A. Cross, B. J. Runde, D. W. Evans, W. G. Cope, J. A. Buckel
Summary: Mercury in seafood poses a threat to human health as a neurotoxicant. Research on mercury concentrations in fish is important due to their consumption by humans and their role as indicators of environmental mercury levels. A study on Atlantic blue marlin found a decline in total mercury concentration in the 1990s compared to the 1970s, with relatively stable concentrations since then.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Xueqiu Wang, Xuemin Liu, Wei Wang
Summary: The CGB project provides geochemical baselines for almost all chemical elements by sampling transported soils across nearly all of China. The spatial distribution of Ca concentrations generally decreases from northwestern to southeastern China, primarily influenced by natural climate conditions.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2022)
Article
Agronomy
Guozheng Zhang, Meijuan Pu, Ruiping Tian, Xiaohong He, Deyue Yu
Summary: Acid rain can negatively impact the growth and seed yield of soybeans. A study on 441 cultivated soybean genotypes revealed significant genetic variation in response to acid rain stress. Different traits related to acid rain tolerance were categorized into four types, with a comprehensive evaluation method identifying both highly acid rain-tolerant and susceptible soybean germplasms.
Article
Ecology
M. W. Swinton, P. K. Myer, M. F. Schaller, E. A. Pettitt, J. L. Farrell, S. A. Nierzwicki-Bauer
Summary: This study investigated mercury bioavailability in streams entering Lake George. Biomagnification rates explained a high percentage of variation in MeHg concentrations within the stream food web. Stream order was negatively related to basin slope and explained most of the variation in predatory macroinvertebrate MeHg concentrations. Methylmercury concentrations were negatively related to delta C-13 in basal resources. Shallow slopes elevated MeHg in basal resources and had minimal influence on variation in predator MeHg concentrations.
Article
Environmental Sciences
Ram B. Jain
Summary: The study revealed a negative association between blood cadmium concentrations and certain PFAAs, a positive association between blood lead concentrations and most PFAAs, and a positive association between blood total mercury concentrations and all PFAAs.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(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)
