Article
Biochemistry & Molecular Biology
Amin Mojiri, Mansoureh Nazari Vishkaei, Hanieh Khoshnevis Ansari, Mohammadtaghi Vakili, Hossein Farraji, Norhafezah Kasmuri
Summary: In this study, the toxicity effects of PFOS and PFOA mixture on two microalgae species were investigated. The results showed that the cell viability, chlorophyll content, and protein content decreased with increased contact time and PFAS concentration, with a greater decrease observed in Scenedesmus obliquus. The toxicity effects were further optimized using response surface methodology and studied through molecular docking.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biotechnology & Applied Microbiology
Zahra Sobhani, Cheng Fang, Ravi Naidu, Mallavarapu Megharaj
Summary: The accumulation of microplastics in soil has become a serious global issue, impacting living organisms and the environment. Research shows that the presence of microplastics in soil significantly increases the bioaccumulation risk of perfluorooctane sulfonate and perfluorooctanoic acid in earthworms, affecting their reproduction negatively.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Biotechnology & Applied Microbiology
B. O. Fagbayigbo, B. O. Opeolu, O. S. Fatoki, O. S. Olatunji, M. O. Akharame, I. S. Human
Summary: This study investigated the partitioning behavior of PFOA and PFOS in sediment samples from river systems. The results showed that the sediments had high sorption capacities for PFOA and PFOS, with the sorption increasing over time. Lower pH values and increasing ionic strength favored the sorption and partitioning of PFAS onto sediments in aqueous solution. This study provides important data and scientific knowledge for understanding the fate and sorption of PFAS in aquatic systems.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Review
Environmental Sciences
Amanda L. Jarvis, James R. Justice, Brian Schnitker, Kathryn Gallagher
Summary: PFOA and PFOS are frequently detected chemicals in aquatic environments, and their high detection frequency, persistence, and potential toxicity have attracted increasing interest. However, many toxicity tests only report nominal treatment concentrations, which may complicate the determination of protective values. This critical review examined the agreement between nominal and measured concentrations in current PFOA and PFOS aquatic toxicity literature and the influence of experimental conditions on the observed differences.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Article
Environmental Sciences
Ganesan Sunantha, Namasivayam Vasudevan
Summary: A genetically engineered bacterial biosensor has been developed for the detection of perfluorinated compounds in water samples, which is simple, reagent and pre-treatment free. The biosensor integrates regulatory and reporter genes, allowing for the specific detection of compounds like PFOA and PFOS with high sensitivity and rapid analysis time.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Engineering, Chemical
Juntao Cheng, Liming Huang, Yunfeng Li, Zhen Zhang, Runzhi Mu, Changqing Liu, Shuncheng Hu, Yihua Xiao, Mengchen Xu
Summary: Perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) are persistent and non-degradable pollutants that are widespread in the environment and in humans. Various technologies, including adsorption, advanced oxidation processes, microbial treatment, and membrane separation, have been used for their degradation. Among them, adsorption technology is mature, advanced oxidation processes have high treatment efficiency, microbial treatment has promising future development prospects, and membrane separation technology can recycle raw materials and save resources. This review provides a practical scientific reference for the research and engineering practices of PFOS and PFOA pollution control in China.
Article
Reproductive Biology
Paola Berenice Ortiz-Sanchez, Ana L. Roa-Espitia, Reyna Fierro, Aidee S. Lopez-Torres, Irma Jimenez-Morales, Ivan Oseguera-Lopez, Enrique O. Hernandez-Gonzalez, Humberto Gonzalez-Marquez
Summary: This study examines the effects of PFOS and PFOA on boar spermatozoa functionality and changes in the plasma membrane during capacitation. The results indicate that both substances reduce the capacitation ability of spermatozoa and impede the progesterone-induced acrosomal reaction. PFOS and PFOA also cause changes in the plasma membrane, including deregulation of membrane potential and alteration of membrane microdomain organization.
REPRODUCTIVE TOXICOLOGY
(2022)
Article
Environmental Sciences
Lijun Shan, Yuhao Chai, Tian Gao, Kun Li, Jianmin Yu, Fei Liang, Ya Ni, Peibei Sun
Summary: PFOS and PFOA, persistent organic pollutants, have harmful effects on human health, especially on male reproduction. They inhibit sperm capacitation and fertilization by affecting hormone levels, spermatogenesis, and sperm quality. The exact mechanisms are still unclear.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2023)
Article
Environmental Sciences
Hussein F. Hassan, Haneen Bou Ghanem, Joelle Abi Kharma, Mohamad G. Abiad, Jomana Elaridi, Maya Bassil
Summary: Human milk is the primary source of nutrition for infants, but it may be contaminated with toxic chemicals such as PFOA and PFOS. This study assessed the levels of PFOA and PFOS in Lebanese breast milk and identified factors associated with their presence. The majority of samples contained PFOA and PFOS, with PFOA levels exceeding the threshold set by EFSA. The consumption of certain foods was associated with higher levels of contamination, highlighting the need for improved agricultural practices and food regulations. Despite the contamination, the benefits of breastfeeding still outweigh the risks.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2023)
Article
Environmental Sciences
Hoai Le Tran, Dieu-Anh Van, Duc Thao Vu, Trung Hai Huynh
Summary: This study evaluates the distribution of PFOS and PFOA in sediment of the Cau River and identifies factors affecting their sorption onto sediment. The results show that PFOS and PFOA are mainly concentrated in areas receiving wastewater and decrease with sediment depth. The study also finds significant correlations between PFOS, PFOA concentration in sediment and total organic carbon content.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Engineering, Chemical
Diana Ordonez, Aditi Podder, Andrea Valencia, A. H. M. Anwar Sadmani, Debra Reinhart, Ni-Bin Chang
Summary: This study investigated the mechanisms and efficiencies of removal of PFOS and PFOA from C-23 canal water, with IFGEM outperforming CTS in terms of PFOA removal due to its larger rate constant, higher adsorption capacity, and larger surface area.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Diana Ordonez, Aditi Podder, Andrea Valencia, A. H. M. Anwar Sadmani, Debra Reinhart, Ni-Bin Chang
Summary: Per- and polyfluoroalkyl substances (PFAS) are a class of chemicals with adverse effects on ecological and human health. This study investigated the removal mechanisms and efficiencies of PFOS and PFOA from water using two different filtration media, IFGEM and CTS. The study found that IFGEM outperformed CTS in terms of PFOA removal due to its larger rate constant, higher adsorption capacity, and larger surface area. PFOS removal was influenced by the affinity of alumina for PFOS functional groups, while PFOA removal was governed by hydrophobic and electrostatic interactions. IFGEM sustained PFAS removal for a longer period of time compared to CTS.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Nichlas Davidsen, Anna Kjerstine Rosenmai, Karin Lauschke, Terje Svingen, Anne Marie Vinggaard
Summary: PFASs, including PFOS and PFOA, are persistent pollutants found in human blood, associated with health issues. GenX has been introduced as a substitute. Results from the PluriBeat assay show strong effects of PFOS and PFOA on cardiomyocyte differentiation, while GenX has a weak concentration-dependent effect.
Article
Environmental Sciences
Yuning Hu, Yuhang Zhan, Cuiyun Wei, Fengjie Chen, Jing Cheng, Yunxiang Shen, Zhen Zhou, Ling Wang, Yong Liang
Summary: This study presents a highly efficient photodegradation technique using a combination of ultraviolet radiation, hydrochar (H-BC), and potassium iodide (KI) to effectively decompose PFOA and PFOS. After 60 minutes of photolysis, the degradation rates of PFOA and PFOS reached 99.5% and 94.1%, respectively, with defluorination percentages of 87.8% and 71.7%, respectively. Liquid chromatography/electrospray ionization/tandem mass spectrometry analysis revealed that short-chain perfluoroalkyl carboxylic acids with less than seven carbons were the main degradation intermediates, suggesting a stepwise photodegradation process. This study is expected to contribute to the development of new strategies for treating water systems contaminated with PFOA and PFOS.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jie Yuan, Soroosh Mortazavian, Elodie Passeport, Ron Hofmann
Summary: This study evaluated the removal of perfluorooctanic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) using granular activated carbon (GAC) harvested from filter-adsorbers in drinking water treatment plants. The results showed that GAC can achieve significant removal of PFOA and PFOS through adsorption. Factors such as GAC service time and empty bed contact time (EBCT) were found to affect the removal efficiency. An empirical model was proposed to predict the removal of PFOA and PFOS based on GAC service time and EBCT.
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)