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
Engineering, Environmental
Daiwei Ouyang, Qingru Wu, Guoliang Li, Deming Han, Shuxiao Wang
Summary: The mercury isotope method shows promise in tracing mercury sources. This study measured samples from a cement plant to understand the impact of raw materials/fuels and production technology on the mercury isotope fractionation characteristics of this sector.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2022)
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
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
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
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
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
Geosciences, Multidisciplinary
Joyce A. Yager, A. Joshua West, Alyson M. Thibodeau, Frank A. Corsetti, Manuel Rigo, William M. Berelson, David J. Bottjer, Sarah E. Greene, Yadira Ibarra, Flavio Jadoul, Kathleen A. Ritterbush, Nick Rollins, Silvia Rosas, Pietro Di Stefano, Debbie Sulca, Simona Todaro, Peter Wynn, Laura Zimmermann, Bridget A. Bergquist
Summary: Mercury is gaining importance as a proxy for large igneous province (LIP) volcanism in the sedimentary record. To overcome challenges in using Mercury as a proxy, measurements from diverse depositional environments and simultaneous use of Mercury stable isotope ratios are recommended. Different depositional environments impact how Mercury anomalies are expressed in ancient marine sedimentary rocks, highlighting the need for careful interpretation of Mercury/TOC ratios as a fingerprint of LIP magmatism.
EARTH-SCIENCE REVIEWS
(2021)
Article
Engineering, Environmental
Morteza Afsari, Jiaxi Jiang, Sherub Phuntsho, Ho Kyong Shon, Leonard D. Tijing
Summary: This study proposes a dual membrane distillation (MD) in-series process for ammonia recovery from hydrolyzed urine. The first MD stage separates ammonia from the urine using an acid solution, while the second stage helps remove water and maintain the solution pH. Compared to single MD setup, the dual MD setup showed higher ammonia fluxes and improved pH control, making it a promising approach for nutrient recovery from urine.
CHEMICAL ENGINEERING JOURNAL
(2023)
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
Environmental Sciences
Buyun Du, Ping Li, Xinbin Feng, Runsheng Yin, Jun Zhou, Laurence Maurice
Summary: Recent studies in Guiyang, China, have shown that rice consumption is the major pathway for human methylmercury exposure, especially for school children. Hair and urine mercury concentrations showed slight seasonal variations, with higher values during the cold season. Students had significantly higher urine mercury concentrations compared to adults due to unique physiological factors, highlighting the need for more attention to children as a susceptible population.
ENVIRONMENTAL 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
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
Geochemistry & Geophysics
Dominik Bozic, Igor Zivkovic, Tatjana Dizdarevic, Martina Peljhan, Marko Strok, Milena Horvat
Summary: This study analyzed the isotopic composition of mercury from the Idrija mine and found that its isotopic fingerprint showed heterogeneous distribution. The results of this study are important for further investigations of the isotopic composition of similar ore bodies and the potential tracing of mercury from the mine to the surrounding environment or downstream.
Article
Energy & Fuels
Xinyu Li, Guangyi Sun, Yunjie Wu, Mengying Zhou, Zhonggen Li, Xiangyang Bi, Jen -How Huang, Xinbin Feng
Summary: A systematic analysis was conducted on 159 coal samples from different regions, periods, and ranks across China, including antimony (Sb) isotopic composition, trace element contents, and total sulfur content (TS). The study discusses the origin of Sb in coal from different regions in China, highlighting the influence of hydrothermal fluid, leachate, terrigenous materials, and inorganic minerals on Sb enrichment. The establishment of the Sb isotopic fingerprint for coal is essential for researching Sb isotope fractionation and tracing Sb release and transport in the supergene eco-environment.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Chemistry, Analytical
Yi Xia, Qianwen Deng, Guangyi Sun, Yunjie Wu, Shengying Qiao, Jamshed Ali, Xuewu Fu, Xinbin Feng
Summary: This study developed an innovative method for digestion, preconcentration, and purification of low-Sb water samples for high precision isotope analysis. No isotopic fractionation was observed during sample preparation, and significant variations in Sb isotope ratios were observed in natural water samples, indicating the potential application of this method in studying aquatic Sb systematics and global Sb cycling.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Environmental Sciences
Bo Wang, Shaochen Yang, Ping Li, Chongyang Qin, Chuan Wang, Muhammad Ubaid Ali, Runsheng Yin, Laurence Maurice, David Point, Jeroen E. Sonke, Leiming Zhang, Xinbin Feng
Summary: Anthropogenic mercury emissions have led to adverse health effects on humans. This study utilized the MeHg Compound-Specific Isotope Analysis (CSIA) approach to track the lifecycle of mercury in Hg-emission areas. The results revealed distinct differences in the isotopes of MeHg and IHg in rice, fish, and hair. The CSIA approach proved to be effective in understanding the biogeochemical cycle of mercury and its impact on human exposure, providing valuable information for pollution control policies and protection of human health.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Environmental Sciences
Mahmoud A. Abdelhafiz, Jiang Liu, Tao Jiang, Qiang Pu, Muhammad Wajahat Aslam, Kun Zhang, Bo Meng, Xinbin Feng
Summary: Rice paddies provide optimal conditions for methylmercury (MeHg) production, with paddy soil being the main source of MeHg in rice grains. The role of dissolved organic matter (DOM) in controlling MeHg production in rice paddy systems is not well understood. This study investigated the variations in soil DOM and the influence of DOM concentration and optical characteristics on MeHg production in paddy soils from different cultivation sites in China. The results showed that MeHg production is correlated with the consumption of lower molecular weight DOM and the humic components of DOM play a significant role in MeHg variability in paddy soil. The study also revealed that allochthonous DOM limits Hg bioavailability in contaminated soils and autochthonous DOM enhances MeHg production in uncontaminated soils.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Nantao Liu, Xinyuan Cai, Longyu Jia, Xun Wang, Wei Yuan, Che-Jen Lin, Dingyong Wang, Xinbin Feng
Summary: This study investigates the concentration and isotopic signatures of mercury (Hg) in the surface soil of the Qinghai-Tibetan Plateau (QTP). The spatial distribution and source contribution of Hg in the surface soil, as well as factors influencing Hg accumulation, are comprehensively studied. Results show that vegetation mediated atmospheric Hg0 deposition is the dominant source of Hg in the surface soil, followed by geogenic sources and atmospheric Hg2+ inputs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Weiqing Zhou, Jianwei Zhou, Xinbin Feng, Bing Wen, Aiguo Zhou, Peng Liu, Guangyi Sun, Ziyi Zhou, Xin Liu
Summary: This study investigates the adsorption mechanisms of antimony (Sb) on iron (oxyhydr)oxides and finds that inner-sphere complexation occurs independently of pH and surface coverage. Lighter Sb isotopes are preferentially enriched on Fe (oxyhydr)oxides due to isotopic equilibrium fractionation. The results provide insights into the Sb adsorption mechanism by Fe (oxyhydr)oxides and clarify the Sb isotope fractionation mechanism, which is essential for future applications of Sb isotopes as tracers.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Jie Huang, Shichang Kang, Xinbin Feng, Wenjun Tang, Kirpa Ram, Junming Guo, Qianggong Zhang, Chhatra Mani Sharma, Chaoliu Li, Lekhendra Tripathee, Feiyue Wang
Summary: The Indian monsoon circulation plays a crucial role in transporting mercury pollution from South Asia to the Himalayas and Tibet Plateau region. A study found a strong overlap between Lake Gokyo and Indian anthropogenic sources, indicating the source of mercury from South Asia. The findings suggest that transboundary atmospheric transport can transport mercury from South Asia northwards to at least the Tanglha Mountains in the northern Himalaya-Tibet.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Engineering, Chemical
Liwei Cui, Xue Tian, Hongxin Xie, Xin Cong, Lihong Cui, Han Wu, Jianxu Wang, Bai Li, Jiating Zhao, Yanshan Cui, Xinbin Feng, Yu-Feng Li
Summary: Cardamine violifolia, a selenium hyperaccumulator, can accumulate mercury in its roots and aboveground parts at concentrations up to 6000 μg/g. The bioaccumulation factors of Hg reached 1.8-223, and the translocation factor reached 1.5. The study revealed a positive correlation between Hg concentrations in plant tissues and soil. The findings provide insights into the mechanisms of Hg hyperaccumulation in C. violifolia and suggest its potential use in remediation of Hg-contaminated farmlands.
JOURNAL OF FOOD ENGINEERING
(2023)
Article
Meteorology & Atmospheric Sciences
Xian Wu, Xuewu Fu, Hui Zhang, Kaihui Tang, Xun Wang, Hui Zhang, Qianwen Deng, Leiming Zhang, Kaiyun Liu, Qingru Wu, Shuxiao Wang, Xinbin Feng
Summary: This study examines the long-term changes in atmospheric mercury concentrations and isotopic compositions in northeastern and southwestern China. The results show continuous declines in gaseous elemental mercury concentrations, which are mainly attributed to reduced anthropogenic emissions. The estimated reduction rates of regional anthropogenic emissions range from 4.8% to 5.8% over the past 5-7 years.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Multidisciplinary Sciences
Wei Yuan, Mu Liu, Daizhao Chen, Yao-Wu Xing, Robert A. Spicer, Jitao Chen, Theodore R. Them, Xun Wang, Shizhen Li, Chuan Guo, Gongjing Zhang, Liyu Zhang, Hui Zhang, Xinbin Feng
Summary: The colonization and expansion of land plants happened earlier than previously thought, during the Ordovician-Silurian transition, based on analysis of Hg isotopes in marine sediments from South China. The negative excursions in Delta Hg-199 and Delta Hg-200 found in these sediments indicate increased terrestrial contribution of Hg due to the rapid expansion of vascular plants. This expansion coincided with rising atmospheric oxygen concentrations and global cooling.
Article
Environmental Sciences
Yongming Han, Zhisheng An, Dewen Lei, Weijian Zhou, Luyuan Zhang, Xue Zhao, Dongna Yan, Richard Arimoto, Neil L. Rose, Sarah L. Roberts, Li Li, Yalan Tang, Xingqi Liu, Xuewu Fu, Tobias Schneider, Xiaolin Hou, Jianghu Lan, Liangcheng Tan, Xingxing Liu, Jing Hu, Yunning Cao, Weiguo Liu, Feng Wu, Tianli Wang, Xiaoke Qiang, Ning Chen, Peng Cheng, Yifei Hao, Qiyuan Wang, Guoqiang Chu, Meiling Guo, Mei Han, Zhihai Tan, Chong Wei, Ulrike Dusek
Summary: Sihailongwan Maar Lake in Northeast China is a potential candidate for the Global boundary Stratotype Section and Point (GSSP) of the Anthropocene. Its sediments provide a detailed chronology of environmental and human impacts, with a tipping point observed in the mid-20th century (1954 CE).
ANTHROPOCENE REVIEW
(2023)
Article
Engineering, Environmental
Hui Zhang, Xuewu Fu, Xian Wu, Qianwen Deng, Kaihui Tang, Leiming Zhang, Jonas Sommar, Guangyi Sun, Xinbin Feng
Summary: This study investigates the fluxes and isotope fractionation of Hg during water-atmosphere exchange processes. The results show that the exchange is characterized by Hg(0) emissions and negative δHg-202 and ΔHg-199 values. The study highlights the importance of atmospheric Hg(0) deposition in the cycling of Hg between atmosphere and water bodies.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Qingqing Wu, Baolin Wang, Haiyan Hu, Andrea G. Bravo, Kevin Bishop, Stefan Bertilsson, Bo Meng, Hua Zhang, Xinbin Feng
Summary: Methylmercury produced in rice paddies poses a high risk to humans and wildlife. Sulfate reduction and methanogenesis play important roles in controlling the reduction of Hg(II) and MeHg. Oxidative demethylation is the main degradative pathway for MeHg in rice paddies.
JOURNAL OF HAZARDOUS MATERIALS
(2023)