Article
Environmental Sciences
Zhansheng Li, Baocheng Qu, Jingqiu Jiang, Tadiyose Girma Bekele, Hongxia Zhao
Summary: The effect of copper ion (Cu2+) on the photoactivity of dissolved organic matter (DOM) was investigated in the photodegradation of TBBPA under simulated sunlight irradiation. The presence of Cu-DOM complex resulted in a 3.2 times higher rate of TBBPA photodegradation compared to pure water. The interaction between Cu2+ and DOM influenced the aggregation of DOM, the concentration of hydroxyl radical (center dot OH), as well as the concentration of singlet oxygen (1O2ss) and triplet of DOM (3DOM*ss).
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Yanan Liu, Jingya Xue, Zhifan Gui, Lu Zhang, Xiaolong Yao
Summary: This study investigates the photoreactivity of dissolved organic matter (DOM) from different sources in the Lake Taihu basin. The results show that the original composition and sources of DOM are closely related to its photoreactivity. DOM from macrophytes releases soluble components under light exposure, while DOM with higher aromacity shows photobleaching effects and increased humification degree. Allochthonous anthropogenic DOM exhibits stronger photo-ammonification. The form of inorganic nutrient releases during DOM photolysis also varies with the original DOM sources.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Hongwei Luo, Qianqian Cheng, Qingfeng Fan, Dongqin He, Xiaonan Wang, Jianqiang Sun, Jun Li, Xiangliang Pan
Summary: This study investigated the influences of pH and sulfide addition on the molecular structure of Hg2+-DOM complexes and the characteristics of Hg2+ binding to DOM using FTIR and synchronous fluorescence two-dimensional correlation spectroscopic analysis. The results showed that different functional groups in DOM exhibited different responses to Hg2+ binding. The formation of S-HA enhanced the binding ability of Hg2+ to DOM, with protein-like fractions playing a leading role in the binding process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Plant Sciences
Yang Liu, Xiaofang Liu, Jun Sun
Summary: The study demonstrates that antibiotics and heavy metals have different effects on marine diatom S. dohrnii, with antibiotics promoting biomass and chlorophyll content increase, while heavy metals negatively impact photosynthetic efficiency and growth of algae. The combined stress of antibiotics and heavy metals further affects the physiological state of S. dohrnii. Characterization of chlorophyll fluorescence and DOM-related variables is crucial for understanding environmental stress on microalgae.
Article
Spectroscopy
Palani Purushothaman, Subramanian Karpagam
Summary: A vibrant blue organic luminescent material with enhanced photophysical properties has been designed and synthesized for the recognition and detection of mercuric ions.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Polymer Science
Vishram D. Hiremani, Mallikarjun H. Anandalli, Tilak Gasti, Shruti Dixit, Praveen K. Bayannavar, Saraswati P. Masti, R. F. Bhajantri, Shyam Kumar Vootla, Bhagyavana S. Mudigoudra, Ravindra B. Chougale
Summary: This study focused on fabricating 7H4MC dye doped PVA/OMS blend films using a user-friendly solvent casting technique, and investigated their thermal stability, surface morphology, and optical properties. The results showed that the blend films were thermally stable, had smooth surfaces, and exhibited reduced optical band gap and enhanced fluorescence emission when doped with 7H4MC. Additionally, the PSC blend films showed superior antimicrobial properties compared to control blend films, making them suitable materials for optical and biological applications.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Environmental Sciences
Chen Yang, Siyu Zhang, Xuehua Li, Xuejiao Zhang, Qing Zhao, Yinghua Li, Haibo Li
Summary: This study investigates the effect of excited triplet states of dissolved organic matters (3DOM*) on the photodegradation of polyhydroxy phenolic genistein (Gs), and establishes the relationship between the properties of 3DOM* and the degradation kinetics constants. The results show that the contributions of 3DOM*-induced reactions to the photodegradation of Gs and the reaction rate constants (kDOM,Gs) increase with pH, which is mainly attributed to the decrease in ionization energy of Gs. The study also reveals that kDOM,Gs positively correlates with the specific ultraviolet absorbance at 254 nm, representing DOM aromaticity, and negatively correlates with the absorbance ratio at 254 and 365 nm and the content of dissociated acidic functional groups of DOM, representing DOM molecular weights and the repulsive forces between 3DOM* and Gs. This study provides insights into the relationship between DOM properties and the indirect photodegradation kinetics of phenolic contaminants in aquatic environments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Martin R. Kurek, Fenix Garcia-Tigreros, Natalie A. Nichols, Gregory K. Druschel, Kimberly P. Wickland, Mark M. Dornblaser, Robert G. Striegl, Sydney F. Niles, Amy M. McKenna, Pieter J. K. Aukes, Ethan D. Kyzivat, Chao Wang, Laurence C. Smith, Sherry L. Schiff, David Butman, Robert G. M. Spencer
Summary: Redox-active functional groups in dissolved organic matter (DOM) play a crucial role in microbial electron transfer and methane emissions. This study quantifies the electron donating and accepting capacities of DOM from northern high-latitude lakes and investigates their relationships with DOM composition. The results show that the redox properties of DOM are strongly tied to aromaticity and negatively related to aliphaticity and protein-like content. These findings have implications for water quality and methane emissions in these lakes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Yawen Deng, Caixia Yan, Minghua Nie, Mingjun Ding
Summary: This study investigated the impact of DOM on the adsorption of soil and biochar-bisphenol A system. The results revealed complexation mechanisms and behaviors through experiments and analysis. The findings suggest that biochar can enhance the surface adsorption capacity of the sorption system, and the fluorescence property of DOM is significant for understanding the fate of pollutants in biochar application.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Water Resources
James B. Shanley, Vivien F. Taylor, Kevin A. Ryan, Ann T. Chalmers, Julia Perdrial, Aron Stubbins
Summary: The transport of mercury (Hg) in water is closely connected to dissolved organic matter (DOM). The quantity and quality of DOM have an impact on Hg mobility and the formation and transportation of toxic methylmercury (MeHg). This study investigates the interactions between Hg, MeHg, and specific DOM components in the Sleepers River catchment in Vermont. The results show that humic-like DOM fluorescence components dominate the fluorescence across sites and sampling campaigns. THg is strongly correlated with these humic components as well as bulk DOC and UV254, while MeHg correlates less strongly with humic-like and protein-like DOM. MeHg increases during summer, potentially due to enhanced microbial production. MeHg formation may be linked to protein-like DOM, while its transport is linked to humic-like DOM.
HYDROLOGICAL PROCESSES
(2022)
Article
Polymer Science
Zeynep Arslan, Huseyin Cem Kiliclar, Yusuf Yagci
Summary: This work reports a visible light induced photodegradation system using dimanganese decacarbonyl (Mn-2(CO)(10)) with high halogen affinity. Halide functional photodegradable polymers are synthesized by copolymerization of methyl methacrylate and methyl alpha-chloroacrylate. Under visible light irradiation in the presence of Mn-2(CO)(10), the synthesized copolymers are efficiently degraded to low molecular weight oligomers. This approach is expected to lead to the development of more environmentally friendly recycling techniques in the future.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Environmental Sciences
Ying Zhang, Chao Yang, Zhi Zheng, Bo Cao, Fengyuan You, Yingying Liu, Zhao Jiang
Summary: The study investigated the different phytotoxicity of atrazine in two different soils to soybeen seedlings, and discussed the potential mechanism by examining the adsorption properties of atrazine with the soils as well as the fluorescent characteristic variation of the DOM extracted from the soils during binding with atrazine. The results suggest that atrazine exhibited different phytotoxicity to soybean seedlings in the two soils, indicating that the components of DOM in different soils may play a role in regulating the environmental behavior and phytotoxicity of organic pollutants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Shukai Liu, Zhengguo Cui, Ying Bai, Dongsheng Ding, Junshuang Yin, Rongguo Su, Keming Qu
Summary: Dissolved organic matter (DOM) is crucial in the indirect photodegradation of organic contaminants. A study on the indirect photodegradation of ofloxacin (OFX) in simulated seawater investigated the roles of DOM and environmental factors. Results showed that DOM accelerates the indirect photodegradation of OFX, with 1O2 and 3DOM* being the crucial reactive intermediates. The structure of DOM and salinity were found to affect the photodegradation rate of OFX, while pH impacted the formation of reactive intermediates and OFX structure. The presence of HCO3- increased the photodegradation rate by generating carbonate radicals (CO3-). This study provides important insights into the fate, removal, and transformation of OFX and the role of DOM in its indirect photodegradation.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Marine & Freshwater Biology
Maria Laura Messetta, Patricia Elizabeth Garcia, Cecilia Hegoburu, Andres Giordano, Andrea Butturini, Claudia Feijoo
Summary: This study aimed to analyze the effects of land use coverage on the concentration and chemical characteristics of DOM in Pampean streams. The results showed that the variation in DOM properties was related to land use coverage and season.
Article
Spectroscopy
Halit Kantekin, Gulpinar Sarki, Ipek Omeroglu, Halise Yalazan, Nuran Kahriman, Mahmut Durmus
Summary: Novel metallo phthalocyanine derivatives with chalcone groups were synthesized and characterized using spectroscopic techniques. The photophysical and photochemical properties of the compounds in DMSO were investigated, showing no aggregation of phthalocyanine complexes.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Engineering, Chemical
Alexander Wiechert, Austin P. Ladshaw, Gary A. Gill, Jordana R. Wood, Sotira Yiacoumi, Costas Tsouris
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2018)
Article
Environmental Sciences
Yan Ling Liang, Tamara E. C. Kraus, Lucas C. R. Silva, Philip A. M. Bachand, Sandra M. Bachand, Timothy A. Doane, William R. Horwath
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Environmental Sciences
Philip A. M. Bachand, Tamara E. C. Kraus, Elizabeth B. Stumpner, Sandra M. Bachand, Dylan Stern, Yan Ling Liang, William R. Horwath
Article
Engineering, Chemical
Li-Jung Kuo, Horng-Bin Pan, Jonathan E. Strivens, Nicholas Schlafer, Christopher J. Janke, Jordana R. Wood, Chien M. Wai, Gary A. Gill
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Environmental Sciences
Edward Gross, Stephen Andrews, Brian Bergamaschi, Bryan Downing, Rusty Holleman, Scott Burdick, John Durand
Article
Geochemistry & Geophysics
Kate M. Campbell, Charles N. Alpers, D. Kirk Nordstrom
APPLIED GEOCHEMISTRY
(2020)
Article
Engineering, Chemical
Alexander Wiechert, Austin P. Ladshaw, Li-Jung Kuo, Horng-Bin Pan, Jonathan Strivens, Nicholas Schlafer, Jordana R. Wood, Chien Wai, Gary Gill, Sotira Yiacoumi, Costas Tsouris
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Environmental Sciences
C. M. Richardson, J. K. Fackrell, T. E. C. Kraus, M. B. Young, A. Paytan
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2020)
Review
Environmental Sciences
Stefanie Helmrich, Dimitri Vlassopoulos, Charles N. Alpers, Peggy A. O'Day
Summary: Mercury is a global health concern, especially harmful for fetuses and children. Methylmercury is an environmentally relevant form of mercury, and its production and transformation rates are crucial for management.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Marine & Freshwater Biology
Matthew Young, Frederick Feyrer, Darren Fong, Rachel Johnson, Tamara Kraus, Veronica Larwood, Elizabeth Stumpner, Megan Young
Summary: Estuarine food webs are complex and influenced by marine, freshwater, and terrestrial inputs. Seasonal fluctuations in precipitation amplify the dynamics of estuarine food webs. However, the sources of organic matter, seasonal hydrologic variability, episodic marine connections, and internal nutrient cycling in bar-built lagoon food webs are not well understood. This study evaluates the food web of a bar-built lagoon and finds that the seasonal changes in the food web are largely dependent on ocean connectivity and internal cycling within the lagoon.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Prajwal Adiga, Nathan Doi, Cindy Wong, Daniel M. Santosa, Li-Jung Kuo, Gary A. Gill, Joshua A. Silverstein, Nancy M. Avalos, Jarrod V. Crum, Mark H. Engelhard, Kelsey A. Stoerzinger, Robert Matthew Asmussen
Summary: The research focuses on developing electrocatalysts for direct seawater electrolysis for energy storage and hydrogen production, with a strategy to suppress chlorine evolution by transition metal doping of Mn-Mo-based catalysts while maintaining catalytic efficiency. The study demonstrates the potential of a novel Mn-Mo-Ru electrode system for enhanced catalytic activity and oxygen evolution efficiency in seawater electrolysis. Further stability testing is needed for long-term applications.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Mohammed Baalousha, Morgane Desmau, Sheryl A. Singerling, Jackson P. Webster, Sandrine J. Matiasek, Michelle A. Stern, Charles N. Alpers
Summary: The presence of iron-bearing nanoparticles in ash after wildland-urban interface fires and their varying concentrations and species composition have been investigated, showing the impact of fires on iron speciation. The concentration of magnetite nanoparticles decreases with the color of the ash.
ENVIRONMENTAL SCIENCE-NANO
(2022)
Article
Environmental Sciences
Robert S. Eckard, Brian A. Bergamaschi, Brian A. Pellerin, Tamara Kraus, Peter J. Hernes
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Chemistry, Inorganic & Nuclear
Horng-Bin Pan, Chien M. Wai, Li-Jung Kuo, Gary A. Gill, Joanna S. Wang, Ruma Joshi, Christopher J. Janke
DALTON TRANSACTIONS
(2020)
Article
Ecology
Calla M. Schmidt, Tamara E. C. Kraus, Megan B. Young, Carol Kendall
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)