Article
Geochemistry & Geophysics
Wang Zheng, Priyanka Chandan, Alexandra Steffen, Geoff Stupple, Joan De Vera, Carl P. J. Mitchell, Frank Wania, Bridget A. Bergquist
Summary: The Arctic plays a critical role in the global mercury (Hg) cycle as both a sink and emerging source of Hg. Human activities have led to significant Hg contamination in the region, highlighting the importance of understanding Hg sources and transformations for predicting global climate change and Hg emissions.
APPLIED GEOCHEMISTRY
(2021)
Article
Environmental Sciences
Wei Guo, Li Luo, Zhongyi Zhang, Nengjian Zheng, Hongwei Xiao, Huayun Xiao
Summary: The study shows that nitrate in southern China, especially during warm months, is mainly derived from the OH radical pathway, while changes in formation pathways and isotopic composition are influenced by air pollution emissions. Higher isotopic values from NOx emissions in northern areas and during cold months lead to higher nitrate isotopic compositions.
ENVIRONMENTAL RESEARCH
(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
Engineering, Environmental
Yo Han Yang, Sae Yun Kwon, Martin Tsz-Ki Tsui, Laura C. Motta, Spencer J. Washburn, Jaeseon Park, Min-Seob Kim, Kyung-Hoon Shin
Summary: By analyzing the nitrogen and mercury isotopes of eels and pike, we found that pike has consistent mercury concentration and ecological traits, making it an effective bioindicator for mercury. Eels, on the other hand, better capture site-specific mercury sources based on their mercury concentration and feeding behavior.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Junyao Yan, Ruolan Li, Muhammad Ubaid Ali, Chuan Wang, Bo Wang, Xingang Jin, Mingyu Shao, Ping Li, Leiming Zhang, Xinbin Feng
Summary: Mine waste in historical mercury mining areas continuously emits mercury into the local environment, including aquatic ecosystems. This study used data on mercury concentration, speciation, and isotopes to trace mercury migration from the mine waste and determine its contribution to mercury pollution. The findings revealed that rainfall can increase mercury concentrations in river water and influence the partitioning and transport of mercury in karst fissure zones. Despite remediation efforts, the treated mine waste remains a significant source of mercury pollution in local aquatic ecosystems.
Article
Geochemistry & Geophysics
Jia-Xin She, Edith Kubik, Weiqiang Li, Frederic Moynier
Summary: This study analyzed the Sn stable isotope compositions of 27 basalts from different geochemical and geological backgrounds in mid-ocean ridges to constrain the Sn isotope composition of the depleted mantle source. The study confirmed the limited Sn isotopic variability between fresh mid-ocean ridge basalts globally, suggesting the Sn isotopic homogeneity of the depleted mantle source.
Article
Environmental Sciences
Saebom Jung, Sae Yun Kwon, Yongseok Hong, Runsheng Yin, Laura C. Motta
Summary: The study revealed diverse mercury sources at Gumu Creek, including commercial liquid mercury, phenyl-mercury, and fly ash, consistent with the types of waste deposited within the hazardous waste landfill (HWL). The results suggest that mercury isotope ratios can effectively identify potential mercury sources in heterogeneous environments with multiple anthropogenic activities.
Review
Engineering, Environmental
Mi-Ling Li, Sae Yun Kwon, Brett A. Poulin, Martin Tsz-Ki Tsui, Laura C. Motta, Moonkyoung Cho
Summary: This paper reviews the progress in using mercury isotopes to understand the internal processes of mercury in biota. Mercury stable isotopes are a powerful tool for assessing mercury sources and biogeochemical processes. Understanding the internal mechanisms leading to mercury isotope change is crucial. There is still uncertainty in the understanding of the internal processes leading to mercury isotope fractionation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Xinyu Li, Zhonggen Li, Ji Chen, Leiming Zhang, Runsheng Yin, Guangyi Sun, Bo Meng, Zikang Cui, Xinbin Feng
Summary: This study investigated the isotope signatures of mercury in flue gas emitted from residential coal combustion in two coal-producing areas of Guizhou Province, China. The results showed that there are both mass-dependent fractionation and mass-independent fractionation occurring during the process of residential coal combustion. The negative shifts observed in the isotope signatures of mercury suggest that without air pollution control devices, residential coal combustion can potentially increase atmospheric mercury levels.
ATMOSPHERIC ENVIRONMENT
(2021)
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
Meteorology & Atmospheric Sciences
Yue Qiu, Pengxue Gai, Fange Yue, Yuanyuan Zhang, Pengzhen He, Hui Kang, Xiawei Yu, Paul K. S. Lam, Jiubin Chen, Zhouqing Xie
Summary: This study investigated the transformation mechanisms of mercury in the marine boundary layer, finding limited contribution of continental anthropogenic emissions to particulate bound mercury (PBM). The study suggested that PBM likely experienced oxidation of Hg-0 by Br radicals and subsequent adsorption of Hg2+, as well as photoreduction influenced by organic compounds. The research highlights the significant role of photoreduction in influencing mercury in the MBL.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Geosciences, Multidisciplinary
Huifang Zhao, Guangyi Sun, Zhonggen Li, Leiming Zhang, Xinbin Feng, Xinyu Li, Tingting Wu
Summary: The study in Northeast China revealed that the reclamation of marsh wetlands 50-60 years ago led to a significant input of mercury into a reservoir, while the weakening of agricultural activities in later decades resulted in less mercury input, indicating that Hg isotope signatures can reflect landscape changes.
Article
Immunology
Agnes Bonifacius, Sabine Tischer-Zimmermann, Anna C. Dragon, Daniel Gussarow, Alexander Vogel, Ulrike Krettek, Nina Goedecke, Mustafa Yilmaz, Anke R. M. Kraft, Marius M. Hoeper, Isabell Pink, Julius J. Schmidt, Yang Li, Tobias Welte, Britta Maecker-Kolhoff, Joerg Martens, Marc Moritz Berger, Corinna Lobenwein, Metodi Stankov, Markus Cornberg, Sascha David, Georg M. N. Behrens, Oliver Witzke, Rainer Blasczyk, Britta Eiz-Vesper
Summary: Research showed that active COVID-19 patients had high levels of anti-SARS-CoV-2 nucleocapsid and spike IgG, but overall reduced antiviral T cell responses due to inflammatory environment, expression of inhibitory molecules, and effector caspase activity in T cells.
Article
Environmental Sciences
Saebom Jung, Sae Yun Kwon, Mi-Ling Li, Runsheng Yin, Jaeseon Park
Summary: This study investigates the sources of mercury (Hg) in the west coast of Korea using Hg stable isotopes. The results show that industrial Hg sources contribute significantly to the west coast of Korea, while riverine and atmospheric Hg sources play minor roles. The study also reveals that fish in the west coast are mainly exposed to methylmercury (MeHg) produced in the sediment, but in some southwest coast sites, external MeHg from rivers and the open ocean water column is more important as a source in fish.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Ke Zhang, Wang Zheng, Ruoyu Sun, Sheng He, Wangcai Shuai, Xiongfei Fan, Shengliu Yuan, Pingqing Fu, Junjun Deng, Xiaodong Li, Shuxiao Wang, Jiubin Chen
Summary: Haze with high particle loading can lead to enrichment of particle-bound Hg (PBM), which may impact the transformation and transport of atmospheric Hg. This study reveals that photoreduction of PBM during haze episodes can result in a significant release of Hg back to the atmosphere. This process may require revision of atmospheric Hg budgeting and modeling.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Correction
Engineering, Environmental
Rose-Marie Kronberg, Martin Jiskra, Jan G. Wiederhold, Erik Bjorn, Ulf Skyllberg
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2018)
Article
Environmental Sciences
Andrew R. C. Grigg, Ruben Kretzschmar, Robin S. Gilli, Jan G. Wiederhold
SCIENCE OF THE TOTAL ENVIRONMENT
(2018)
Article
Environmental Sciences
Stefan Osterwalder, Jen-How Huang, Waleed H. Shetaya, Yannick Agnan, Aline Frossard, Beat Frey, Christine Alewell, Ruben Kretzschmar, Harald Biester, Daniel Obrist
ENVIRONMENTAL POLLUTION
(2019)
Article
Engineering, Environmental
Meret Aeppli, Ralf Kaegi, Ruben Kretzschmar, Andreas Voegelin, Thomas B. Hofstetter, Michael Sander
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Engineering, Environmental
Flora M. Brocza, Harald Biester, Jan-Helge Richard, Stephan M. Kraemer, Jan G. Wiederhold
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Engineering, Environmental
Meret Aeppli, Sanja Vranic, Ralf Kaegi, Ruben Kretzschmar, Ashley R. Brown, Andreas Voegelin, Thomas B. Hofstetter, Michael Sander
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Environmental Sciences
Xiaowei Xu, Peng Wang, Jun Zhang, Chuan Chen, Ziping Wang, Peter M. Kopittke, Ruben Kretzschmar, Fang-Jie Zhao
ENVIRONMENTAL POLLUTION
(2019)
Article
Engineering, Environmental
Laurel K. ThomasArrigo, Ralf Kaegi, Ruben Kretzschmar
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Soil Science
Michael Simmler, Iso Christl, Ruben Kretzschmar
APPLIED SOIL ECOLOGY
(2019)
Letter
Engineering, Environmental
Jan G. Wiederhold, Martin Jiskra
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Analytical
D. S. McLagan, L. Schwab, J. G. Wiederhold, L. Chen, J. Pietrucha, S. M. Kraemer, H. Biester
Summary: Interpretation of Hg geochemistry can be challenging due to the complexity of Hg transformation processes. In this study, we demonstrate the improved interpretation of Hg geochemistry by combining Hg stable isotope analyses with established methods. This approach allows us to identify specific Hg transformation processes and trace their behavior in environmental systems.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2022)
Article
Environmental Sciences
Nadine Belkouteb, Henning Schroeder, Julia Arndt, Jan G. Wiederhold, Thomas A. Ternes, Lars Duester
Summary: Triple-quadrupole inductively coupled plasma mass spectrometry (ICP-QQQ-MS) is a unique analytical technique used for determining total element concentrations in various matrices, with wide linear range and short analysis times. By applying this method in future river water monitoring networks, a better understanding of natural transport processes and global biogeochemical element cycles can be achieved, and the number of methods can be reduced.
Article
Engineering, Environmental
Lorenz Schwab, Niklas Gallati, Sofie M. Reiter, Richard L. Kimber, Naresh Kumar, David S. McLagan, Harald Biester, Stephan M. Kraemer, Jan G. Wiederhold
Summary: This study contributes significantly to the database of Hg isotope enrichment factors for specific processes. The findings show that Hg(II) reduction by dissolved Fe(II) in open systems results in a kinetic mass-dependent fractionation (MDF) with a larger epsilon compared to other abiotic reduction pathways, and combining MDF with the observed mass-independent fractionation (MIF) allows the distinction from photochemical or microbial Hg(II) reduction pathways.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Soil Science
Xu Fang, Anna Muntwyler, Pascal Schneider, Iso Christl, Peng Wang, Fang-Jie Zhao, Ruben Kretzschmar
Summary: Paddy soils in southern China are contaminated by arsenic and cadmium, posing a threat to human health. The quantitative understanding of how soil characteristics influence the accumulation of these contaminants in rice grains is still lacking. Based on soil-grain samples collected in the region, this study found that CaCl2 extraction of field-moist soil provided the best estimation for grain cadmium, while parameters from other soil analyses did not improve the prediction of grain arsenic. The study suggests the importance of soil-available sulfur in controlling grain arsenic.
Article
Environmental Sciences
Mikhail Paramonov, Robert O. David, Ruben Kretzschmar, Zamin A. Kanji
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2018)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)