Article
Engineering, Environmental
Johannes Raths, Linda Schinz, Annika Mangold-Doring, Juliane Hollender
Summary: In this study, a multi-compartment toxicokinetic modeling approach was used to evaluate the bioaccumulation of neonicotinoids. The study found a delayed toxicity phenomenon in aquatic invertebrates exposed to neonicotinoids. The research also demonstrated an incomplete elimination of neonicotinoids in freshwater amphipods and developed a two-compartment model to predict their uptake and elimination kinetics. The results suggest the importance of considering long-term toxic effects and irreversible receptor binding in regulatory contexts. The developed model can be used for future toxicokinetic assessments of receptor-binding contaminants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Nicolas Lachaux, Charlotte Catrouillet, Remi Marsac, Laurence Poirier, Sandrine Pain-Devin, Elisabeth Maria Gross, Laure Giamberini
Summary: Rare earth elements (REE) are widely used in high-tech and green technologies, but their release into aquatic environments can have ecological consequences. This study shows that the speciation of REE, especially their complexation with dissolved organic matter (DOM), significantly influences their bioaccumulation and toxicity towards D. magna.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Na Liu, Xuge Lou, Xiong Li, Zuping Shuai, Hanyi Liu, Zhenmao Jiang, Shiqiang Wei
Summary: Organic amendments can modify rhizosphere dissolved organic matter properties and Fe-plaque quantity, affecting cadmium bioavailability and uptake by rice. Increasing rates of organic amendments decrease Cd availability in rhizosphere and bulk soils and Cd contents in rice tissues. Organic amendments towards higher aromaticity, molecular weight, and stability of soil DOM.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Zhou Liang, Robert T. Letscher, Angela N. Knapp
Summary: Surface ocean bulk and semi-labile dissolved organic matter (DOM) stoichiometry vary across ocean regions with global means of 387:26:1 and 179:20:1, respectively. Surface ocean DOC:DOP and DON:DOP concentration ratios are more variable than DOC:DON concentration ratios. Surface ocean gradients in P-depleted DOM stoichiometries in the Pacific and Atlantic basins reflect variable nutrient stress.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Article
Environmental Sciences
Rubing Wang, Xinmeng Li, Jiahui Xu, Canyang Hu, Zhuhua Wang, Jingwen Chen, Xiyun Cai
Summary: The bioavailability of organic chemical bioaccumulation follows the power law, influenced by the lipid fraction of invertebrates, bulk site concentration of compounds, and organic carbon content of soils/sediments. This law directly links environmental exposures and body burdens of organic chemicals in contaminated sites, offering a method for case-specific risk assessments and regulation of a vast number of organic chemicals and contaminated sites.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Sarah E. Janssen, Michael T. Tate, Brett A. Poulin, David P. Krabbenhoft, John F. DeWild, Jacob M. Ogorek, Matthew S. Varonka, William H. Orem, Jeffrey L. Kline
Summary: Mercury contamination in the Florida Everglades has been a persistent concern. This study examined mercury and methylmercury dynamics in different media and found strong linkages between air, water, and biota in the system. Changes in hydrology and climate were the main drivers of temporal patterns across different matrices. Unlike other regions, there was no evidence of a decline in atmospheric mercury deposition in this region. The study also identified geographic regions susceptible to higher methylmercury bioaccumulation, particularly in the Shark River Slough and Coastal areas. Improved water quality and flow rates, two key targets of the restoration program, are expected to reduce methylmercury production and exposure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Bo Shao, Zhike Li, Zhengyu Wu, Ning Yang, Xiaoyu Cui, Huiming Lin, Yiwen Liu, Wei He, Yingxin Zhao, Xuejun Wang, Yindong Tong
Summary: The bioaccumulation of MeHg in pelagic food webs is influenced by dissolved organic matter (DOM), with elevated concentrations of DOM and phytoplankton biomass affecting MeHg uptake by phytoplankton and resulting in more significant biomagnification in zooplankton.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Siqian Liu, Jian Zhou, Jia Guo, Zhuo Gao, Yibo Jia, Shunli Li, Tiecheng Wang, Lingyan Zhu
Summary: The study revealed that both BSA and HA significantly inhibited the bioaccumulation and translocation of PFASs in wheat roots and shoots, with BSA having a greater impact than HA. The higher binding affinities of the four PFASs with BSA than with HA explained this difference. Additionally, the inhibition impacts of the BSA-HA mixture (1:1) were lower than BSA alone.
ENVIRONMENTAL POLLUTION
(2022)
Article
Geosciences, Multidisciplinary
Hewen Niu, Shichang Kang, Chandan Sarangi, Guotao Zhang, Mengxue Chen, Yuzhong Zhang, Huili Qin
Summary: This study systematically determines the organic and inorganic constituents in water bodies of the cryosphere region in the eastern Tibetan Plateau and finds that high-elevation water bodies have lower organic carbon content. Additionally, it suggests that atmospheric deposition and anthropogenic activities contribute to the observed patterns in organic carbon and nitrogen content.
Article
Environmental Sciences
Afia Anjuman, Yuping Xiang, Guangliang Liu, Yong Cai
Summary: Periphyton is a significant source of dissolved organic matter (DOM), especially in wetland environments like the Everglades. This study analyzed the composition and characteristics of DOM produced by periphyton and compared it with DOM in surrounding surface water. The results showed that periphyton significantly contributes to DOM production and leaching, and the type of periphyton affects the production and composition of DOM.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Mengting Li, Guisheng Song, Huixiang Xie
Summary: This study investigated the bio- and photo-lability of dissolved organic matter (DOM) in different areas of the Pearl River estuary. The headwater had higher levels of bio- and photo-labile DOM compared to the mixing zone and mouth, while the latter two had higher levels of bio- and photo-refractory DOM. The impact of pre-biotransformation on DOM photodegradation varied depending on the specific site. UV absorption coefficients were indicators of bio- and photo-refractory DOC, and the relative proportions of transparent and chromophoric DOM controlled the turnover of biolabile DOC and the effect of pre-biotransformation on DOM photodegradation.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Federico Baltar, Xose A. Alvarez-Salgado, Javier Aristegui, Ronald Benner, Dennis A. Hansell, Gerhard J. Herndl, Christian Lonborg
Summary: The text discusses the transformation and sequestration of organic carbon produced in the sunlit surface ocean into the ocean's interior, focusing on the refractory dissolved organic carbon (rDOC). It emphasizes the importance of defining rDOC operationally and highlights the various factors influencing its persistence, including intrinsic and extrinsic properties. The text also suggests specific research questions aimed at stimulating further research on the nature, dynamics, and role of rDOC in carbon sequestration under future scenarios of climate change.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Engineering, Environmental
Qunhuan Ma, Li Zhang
Summary: In this study, the uptake, bioaccumulation, subcellular distribution, and biotransformation of arsenate (As(V)) were assessed in two marine microalgae species, Skeletonema costatum and Amphidinium carterae, cultured in dissolved inorganic phosphorus (DIP) and dissolved organic phosphorus (DOP). The results showed that As(V) was more toxic in DOP cultures than in DIP cultures, and higher As accumulation contributed to more severe toxicity. The uptake kinetics of As(V) followed Michaelis-Menten kinetics, with higher maximum uptake rates in DOP cultures. Additionally, the study found that DOP affected the half-saturation constants differently in the two species. S. costatum maintained constant constants, while A. carterae showed a decrease after P addition. The long-term exposure also revealed species-specific effects, with A. carterae accumulating more As and undergoing only As(V) reduction, while S. costatum showed As(V) reduction and transformation into organic As species, which was inhibited in DOP cultures. Overall, this study provides new insights into the relationship between As contamination and eutrophication based on marine microalgae.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Derrick R. Vaughn, Anne M. Kellerman, Kimberly P. Wickland, Robert G. Striegl, David C. Podgorski, Jon R. Hawkings, Jaap H. Nienhuis, Mark M. Dornblaser, Edward G. Stets, Robert G. M. Spencer
Summary: Anthropogenic conversion of forests and wetlands to agricultural and urban landcovers impacts dissolved organic matter (DOM) within streams draining these catchments, but research on how it affects DOM molecular composition and bioavailability is lacking. In a study of the Upper Mississippi River Basin, it was found that streams draining urban areas had higher bioavailable DOC (BDOC) concentrations compared to streams draining agricultural and forested areas. The conversion of forested landcover to urban had a greater impact on stream DOM bioavailability than conversion to agricultural landcover.
Article
Environmental Sciences
Hongyan Bao, Jing Qiao, Ruoyang Zhang, Dekun Huang, Baiyun Wang, Xihuang Lin, Shuh-Ji Kao
Summary: In this study, the temporal variation and influential factors of rainwater dissolved organic matter (DOM) were tracked at a coastal site using dissolved organic carbon (DOC), UV-vis spectra, and molecular markers. The results showed negative correlations between DOC, light absorption, and precipitation amount, as well as higher DOM concentrations in spring and in rain influenced by the land. Human emissions and secondary production played important roles in regulating the level of DOM concentration, and environmental variables confirmed the input from anthropogenic activities. Future studies should focus on how atmospheric deposition affects biogeochemical cycles in coastal regions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
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)