Article
Geochemistry & Geophysics
Yogita Kadlag, Michael Tatzel, Daniel A. Frick, Harry Becker, Philipp Kuehne
Summary: Chondrules in undifferentiated meteorites are silicate melt droplets with variable texture and composition. Si isotope ratios and element compositions of chondrules in the Allende CV3 chondrite were determined to understand the formation mechanisms and conditions, suggesting that chondrules and matrix likely formed in nebular settings rather than by asteroid impacts.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Environmental Sciences
Daniel F. Araujo, Joel Knoery, Nicolas Briant, Emmanuel Ponzevera, Tiphaine Chouvelon, Isabelle Auby, Santiago Yepez, Sandrine Bruzac, Teddy Sireau, Anne Pellouin-Grouhel, Farida Akcha
Summary: Metal release from anthropogenic activities can pose risks to ecosystems and human health. This study used Cu isotopes in Pacific oysters to monitor anthropogenic Cu accumulation in marine environments. The results showed a correlation between Cu isotope compositions and exposure levels to continental Cu sources, highlighting the potential for using stable isotope techniques for metal bioaccumulation monitoring.
ENVIRONMENTAL POLLUTION
(2021)
Article
Geochemistry & Geophysics
Katrin Weber, Michael Weber, Martina Menneken, Anna G. Kral, Regina Mertz-Kraus, Thorsten Geisler, Jochen Vogl, Thomas Tuetken
Summary: Experimental alteration of dental tissues from modern African elephants reveals that temperature and acidity can affect isotope ratios and element distribution in teeth, with enamel being more resistant to changes compared to dentin.
Review
Chemistry, Analytical
Peijie Zuo, Yuming Huang, Jianzhou Bi, Weichao Wang, Wei Li, Dawei Lu, Qinghua Zhang, Qian Liu, Guibin Jiang
Summary: Atmospheric particulate matter (PM) pollution is a severe environmental problem worldwide, associated with various diseases. Stable isotopes have been used as valuable tracers to identify and constrain pollution sources, which is crucial for mitigating the impact of PM.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Sourav Das, Brent Miller, Joseph Prospero, Shankararaman Chellam
Summary: This article presents a new chemical separation protocol for isotopic analysis of low mass aliquots of airborne particulate matter. The protocol achieves successful separation and accurate quantification of several reference materials and real-world samples. The method is optimized to isolate individual anthropogenic and natural aerosol sources in complex atmospheric environments. In addition, the method is used to measure isotopic ratios and elemental abundances in different urban PM sources, demonstrating the superiority of isotopic markers over elemental tracers.
Article
Geochemistry & Geophysics
Martin Guitreau, Abdelmouhcine Gannoun, Zhengbin Deng, Marc Chaussidon, Frederic Moynier, Bernard Barbarin, Johanna Marin-Carbonne
Summary: This study investigates the silicon isotope signatures of zircon in various granite types to understand their fractionation behavior, which can be useful in studying magma evolution and identifying granite source areas. Silicon isotope ratios in zircon can track changes in magma temperature and composition, revealing complex processes like magma mingling, fractional crystallization, and multiple sources. The study highlights that silicon isotopes in zircon can complement existing techniques in granite studies and should not be used in isolation.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geochemistry & Geophysics
Fang Liu, Mingxing Ling, Zhaofeng Zhang, Wenning Lu, Jianbing Xu, Xin Li, Di Yang, Jiaojiao Wu, Hong Yang
Summary: This study reports stable cerium (Ce) isotopic compositions of terrestrial rocks and investigates Ce isotopic fractionation during column chemistry. The Ce isotopes were separated using a single-stage extraction technique and measured using a Thermo Scientific Neptune Plus MC-ICP-MS. Data accuracy and precision were examined by two different laboratories.
Article
Spectroscopy
Xiaoqiang Li, Guilin Han, Qian Zhang, Rui Qu, Zhuang Miao
Summary: Lithium isotopes are useful for tracking the evolution of continental silicate weathering and maintaining Earth's long-term climate stability. A new optimization of dual-column chromatography allows for high precision determination of lithium isotope ratios in various geological samples. The method has been shown to be reproducible and reliable.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Geochemistry & Geophysics
Jiahui Gu, Yufang Sun, Tongliang Wu, Zhen Zeng, Qian Sun, Cun Liu, Yujun Wang
Summary: This study proposes a widely applicable soil acid digestion method for determining zinc isotope in soil samples. The recovery rate of zinc was found to be 99-100% using this method. The method was used to analyze soil samples from different regions, providing a range of zinc isotope compositions. These findings are important for data comparison and calibration between laboratories, as well as for future studies on zinc isotopes.
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
(2022)
Article
Oceanography
Daniel F. Araujo, Joel Knoery, Nicolas Briant, Emmanuel Ponzevera, Daniel Santos Mulholland, Sandrine Bruzac, Teddy Sireau, Tiphaine Chouvelon, Christophe Brach-Papa
Summary: This study investigates metal distributions and stable isotope ratios of copper and zinc in different size fractions of marine suspended particulate matter (SPM) from the Bay of Biscay. The results show that smaller size fractions of SPM are enriched with geogenic Cu and Zn, while larger size fractions contain Cu and Zn metabolically incorporated into biogenic organic particles. The isotopic composition of the biogenic particles likely represents the local marine organic matter available to primary consumers. Targeting particles of specific size classes allows for the identification of different pools and their isotopic composition, which can help track Cu and Zn transfers through the marine food-web.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Geochemistry & Geophysics
Deze Liu, Frederic Moynier, Paolo A. Sossi, Raphael Pik, Saemundur Ari Halldorsson, Edward Inglis, James M. D. Day, Julien Siebert
Summary: Indium (In) behaves as a moderately volatile metal during nebular and planetary processes and its volatility depends on oxygen fugacity. Accurately determining the isotopic composition of In in silicate Earth is challenging due to its low abundance in rocks and significant isobaric interferences. This study presents a purification procedure for In and reports the first dataset of its isotopic compositions in terrestrial igneous rocks, showing no significant variation between different types of basalts. The average δ115In of 0.35‰ (2SD) in basalts represents the best estimate of the In isotopic composition of the mantle and the bulk silicate Earth.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Geochemistry & Geophysics
Nasser A. Zirakparvar, Benjamin T. Manard, Cole R. Hexel, Daniel R. Dunlap
Summary: In this study, the behavior of the Lu-Yb-Hf system during laser ablation and solution-based analyses was assessed using the recently released Neoma (TM) platform. The primary focus was on characterizing the Yb interference correction, which is an important issue in Hf isotope analysis. The results showed that high signal intensity analyses produced accurate and precise data, while an empirical approach was effective in obtaining accurate results with low Yb signals.
Article
Geochemistry & Geophysics
Wei Dai, Frederic Moynier, Marine Paquet, Julien Moureau, Baptiste Debret, Julien Siebert, Yvan Gerard, Ye Zhao
Summary: This study presents a method for analyzing stable and radiogenic calcium isotopes simultaneously, achieving high precision measurements. The new method opens up new possibilities for research and applications in calcium isotope analysis.
Review
Chemistry, Physical
Silviu-Laurentiu Badea, Violeta-Carolina Niculescu, Andreea-Maria Iordache
Summary: This paper discusses the importance of producing materials with enriched isotopic abundance in isotopic technologies and the different methods for separating lithium isotopes, highlighting their advantages and disadvantages.
Article
Biochemistry & Molecular Biology
Kaj Sullivan, Rebekah E. T. Moore, Miles S. Capper, Kathrin Schilling, Kate Goddard, Charlotte Ion, Daniel Layton-Matthews, Matthew Leybourne, Barry Coles, Katharina Kreissig, Olga Antsygina, R. Charles Coombes, Fiona Larner, Mark Rehkamper
Summary: The disruption of Zn homeostasis is associated with breast cancer development and progression. Zinc concentrations and isotopic compositions were analyzed in different types of tissues, showing significant differences between benign and malignant tumours as well as healthy tissues. Zinc isotopic compositions have potential as a diagnostic tool for breast tumours, while further investigation into Zn accumulation in tissues is needed.
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)