Article
Environmental Sciences
Zhihao Wu, Xia Jiang, Junyi Chen, Shuhang Wang, Cheng Yao
Summary: This research used DGT assemblies with different binding layers to study the mobility of N and P in sediments in Western Lake Taihu. The results provide important insights into the biogeochemical processes and nutrient release in lakes, which are crucial for effective nutrient management.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Cheng Yao, Feifei Che, Xia Jiang, Zhihao Wu, Junyi Chen, Kun Wang
Summary: The study revealed that under the influence of pollutants discharged by textile plants, the concentrations of antimony compounds in the sediment of shallow lakes are relatively high. Antimony was found to be immobile in the oxygen-rich layer, but released along with other elements in the anoxic environment, depending on the redox conditions and the labile antimony content in the sediment. The mobility of antimony in shallow lakes and wetland sediments should be carefully considered when assessing the potential ecological risks.
Article
Environmental Sciences
Xiaowen Ji, Jonathan K. Challis, Jenna Cantin, Ana S. Cardenas Perez, Yufeng Gong, John P. Giesy, Markus Brinkmann
Summary: Dynamic processes of organic contaminants in sediments have toxicological implications in aquatic systems. The study used DGT devices to measure the flux and exchange rates of antipsychotic compounds in sandy sediments. The results showed the continuous removal of these compounds from the sediments and their movement to the adjacent sediment solution. A dynamic model was used to determine the rate constants and distribution coefficients of the antipsychotics. The study highlights the importance of understanding the desorption kinetics of contaminants in sediments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Yuhao Liang, Rui Wang, G. Daniel Sheng, Linhong Pan, Ergang Lian, Ni Su, Xiliang Tang, Shouye Yang, Daqiang Yin
Summary: This study investigated the distribution and bioavailability of heavy metals in sediments along two transects from the Yangtze River to the East China Sea continental shelf. Heavy metals were mainly found in fine-grained sediments enriched with organic matter. The turbidity maximum zone had the highest metal concentrations, especially Cd, indicating pollution. The non-residual fractions of Cu, Zn, and Pb were higher in the turbidity maximum zone and negatively correlated with bottom water salinity. DGT-labile metals were positively correlated with the acid-soluble metal fraction and negatively correlated with salinity, except for Co.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Mengke Song, Yicheng Su, Longfei Jiang, Ke Peng, Jinling Li, Sisi Liu, Yingtao Sun, Chang-Er Chen, Chunling Luo
Summary: This study utilized the DGT technique to determine the bioavailability of antibiotics in soil and compared the results with plant uptake, soil solutions, and solvent extraction methods. The results showed that DGT had predictive capability for plant uptake of antibiotics and the bioavailability varied in different soils.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Darren J. Koppel, Gwilym A. Price, Kathryn E. Brown, Merrin S. Adams, Catherine K. King, Damian B. Gore, Dianne F. Jolley
Summary: Metal contaminants in Antarctic soils show varied concentrations and activities in different extraction agents, while the DGT method can provide environmentally relevant measurements of metal contaminant lability.
Article
Geochemistry & Geophysics
Zhihao Wu, Xia Jiang, Junyi Chen, Shuhang Wang
Summary: In this study, a passive sampling technique called diffusion gradients in thin films (DGT) was used to investigate the biogeochemical behaviors and dynamic transfer of PO4-P, NH4-N, and NO3-N in sediments of Lake Hulun in China. Based on the analysis of DGT concentration profiles and redox status, it was found that the release of phosphorus (P) is mainly controlled by the reductive dissolution of Mn(IV) or Fe(III) (oxyhydr)oxides, while the release of ammonium (NH4-N) is influenced by denitrification and dissimilatory nitrate reduction. The results of this study provide valuable information for lake pollution control and sediment remediation strategies.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Review
Engineering, Environmental
Yixuan Liang, Hanbing Li, Sumei Li, Sha Chen
Summary: Antibiotics, widely used in human and veterinary medicine, are persistent organic compounds that contribute to the development of antibiotic resistance in microbes. This review discusses the use of o-DGT technology to study the behavior of antibiotics in different environmental media. It compares different agarose diffusive gel and binding agents, explores the feasibility of o-DGT in water and soil, and analyzes the potential of using o-DGT in sediment for antibiotic measurements.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Analytical
Hongqian Yin, Heng Yao, Wei Yuan, Che-Jen Lin, Xuewu Fu, Runsheng Yin, Bo Meng, Jun Luo, Xinbin Feng
Summary: A DGT method using aminopropyl and mercaptopropyl bi-functionalized SBA-15 nanoparticles was developed to determine the concentration and isotopic composition of aqueous Hg. Laboratory analysis showed that Hg adsorption by DGT induces mass-dependent fractionation (MDF) and limited mass-independent fractionation (MIF). The DGT method effectively characterizes the MIF of Hg, providing valuable insights into the biogeochemical cycle of Hg at contaminated sites.
ANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
Zhen Xu, Wen-Xuan Sun, Qing-Qing Li, Ying-Jian Han, Wei-Wei Ma, Tie Li, Mao-Xu Zhu
Summary: This study used in situ, high-resolution diffusive gradient in thin films (DGT) technique and solid-phase speciation to investigate the diagenesis of S, Fe, and P in muddy sediments in the central South Yellow Sea (SYS). The results showed that DIR dominated Fe reduction, and the sulfate reduction rate was generally low. The positive correlation between porewater Fe and DIP suggested that DIP release was primarily driven by DIR. The benthic flux of DIP from muddy sediments was found to have a minor impact on the P budget in the sea.
Article
Environmental Sciences
Lucas Pellegrini Elias, Amauri Antonio Menegario, Amauris Hechavarria Hernandez, Carlos Eduardo Eismann, Jose Lucas Martins Viana, Jorge Henrique Pedrobom, Edson Geraldo de Oliveira Junior, Laurent Barbiero, Anne Helene Fostier
Summary: The study conducted in the Pantanal of Nhecolandia (Brazil) using DGT technology revealed that arsenic is mainly present in dissolved form in the saline-alkaline lakes. The nature of organic matter influences the formation of arsenic complexes, with higher concentrations observed in the center of the lakes. DGT approach demonstrated the importance of in situ sampling analytical techniques in understanding arsenic speciation in complex natural aquatic systems.
Article
Environmental Sciences
Rachel Martins de Barros, Juliette Rougerie, Robin Guibal, Sophie Lissalde, Remy Buzier, Stephane Simon, Gilles Guibaud
Summary: In this study, the performances of L-DGT, conventional DGT, and POCIS were compared for monitoring organic contaminants. The results showed that L-DGT had advantages in sensitivity and robustness during field deployment compared to the conventional DGT. POCIS had the highest sensitivity, but both L-DGT and DGT provided more reliable determination of time-weighted average concentrations (CW). L-DGT was more suitable for low-contaminated contexts requiring higher sensitivity, while POCIS remained the most suitable passive sampler for qualitative evaluation.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Fei Xu, Yu Wang, Xinyi Chen, Luyu Liang, Yi Zhang, Fubin Zhang, Tuo Zhang
Summary: This study assessed the environmental risks of the Jialing River using risk assessment indexes, sequential extraction, and the diffusive gradients in thin films (DGT) technique, focusing on cobalt (Co) remobilization in sediments. The results showed that Co poses a low environmental and ecological risk to the local aquatic environment, but sediments may still serve as a source of Co release. Sand mining activities were found to contribute significantly to Co release from specific fractions in sediment.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Xiaowen Ji, Catherine Estefany Davila Arenas, Ana Sharelys Cardenas Perez, John P. Giesy, Markus Brinkmann
Summary: The present study used DGT samplers to develop a predictive model between antipsychotic compounds in water and crayfish. The model accurately predicted the uptake by organisms, except for one compound. The study also showed partial resupply of antipsychotic compounds from sediments to the aqueous phase.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Article
Environmental Sciences
Po Wang, Bowen Du, Jayme Smith, Wenjian Lao, Charles S. Wong, Eddy Y. Zeng
Summary: A passive sampler based on organic-diffusive gradients in thin films (o-DGT) was developed for monitoring microcystins (MCs) in waterbodies, showing effectiveness in assessing dissolved MCs. o-DGT demonstrated a lower time-weighted average MC concentration compared to grab sampling, indicating its potential limitations in capturing total MC levels in waterbodies.
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)