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Journals Environmental Science. Process...

Environmental Science. Processes & Impacts

https://read.qxmd.com/read/38315154/wildland-urban-interface-wildfire-increases-metal-contributions-to-stormwater-runoff-in-paradise-california
#21
JOURNAL ARTICLE
Lauren J Magliozzi, Sandrine J Matiasek, Charles N Alpers, Julie A Korak, Diane McKnight, Andrea L Foster, Joseph N Ryan, David A Roth, Peijia Ku, Martin Tsz-Ki Tsui, Alex T Chow, Jackson P Webster
The 2018 Camp Fire was a large late-year (November) wildfire that produced an urban firestorm in the Town of Paradise, California, USA, and destroyed more than 18 000 structures. Runoff from burned wildland areas is known to contain ash, which can transport contaminants including metals into nearby watersheds. However, due to historically infrequent occurrences, the effect of wildland-urban interface (WUI) fires, such as the Camp Fire, on surface water quality has not been well-characterized. Therefore, this study investigated the effects of widespread urban burning on surface water quality in major watersheds of the Camp Fire area...
February 5, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38312055/pfas-occurrence-and-distribution-in-yard-waste-compost-indicate-potential-volatile-loss-downward-migration-and-transformation
#22
JOURNAL ARTICLE
Biraj Saha, Mohamed Ateia, Sujan Fernando, Jiale Xu, Thomas DeSutter, Syeed Md Iskander
We discovered high concentrations of PFAS (18.53 ± 1.5 μg kg-1 ) in yard waste compost, a compost type widely acceptable to the public. Seventeen out of forty targeted PFAS, belonging to six PFAS classes were detected in yard waste compost, with PFCAs (13.51 ± 0.99 μg kg-1 ) and PFSAs (4.13 ± 0.19 μg kg-1 ) being the dominant classes, comprising approximately 72.5% and 22.1% of the total measured PFAS. Both short-chain PFAS, such as PFBA, PFHxA, and PFBS, and long-chain PFAS, such as PFOA and PFOS, were prevalent in all the tested yard waste compost samples...
February 5, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38305769/heterogeneous-interactions-and-transformations-of-dibasic-esters-with-indoor-relevant-surfaces
#23
JOURNAL ARTICLE
Cholaphan Deeleepojananan, Jinxu Zhou, Vicki H Grassian
Dibasic esters (DBEs) have recently become emerging indoor air pollutants due to their usage as a solvent for mixtures of paints and coatings. In this study, we explored the adsorption/desorption kinetics, heterogeneous interactions, and chemical transformations of dimethyl succinate (DMS, C6 H10 O4 ), a component of commercial dibasic ester solvent mixtures, on indoor relevant surfaces using transmission Fourier-transform infrared (FTIR) spectroscopy and high-resolution mass spectrometry (HRMS). Silica (SiO2 ) and rutile (TiO2 ) were used as proxies for window glass, and an active component in paint and self-cleaning surfaces, respectively...
February 2, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38305448/elevated-levels-of-environmental-radioactivity-in-fluvial-sediment-origin-and-health-risk-assessment
#24
JOURNAL ARTICLE
Md Ahosan Habib, Sayma Zahan Akhi, Rahat Khan, Khamphe Phoungthong, Md Samium Basir, Amit Hasan Anik, A R M Towfiqul Islam, Abubakr M Idris
To study the geogenic processes of naturally occurring radioactive materials' (NORMs') distribution, a transboundary Himalayan river (Punarbhaba) is chosen due to its trivial anthropogenic impacts. In explaining the genesis of radionuclides, transition elements (Sc, Ti, V, and Fe), rare-earth-elements (REEs: La, Eu, Ce, Yb, Sm, and Lu), Ta, Hf, Th, and U were analysed in 30 riverbed sediments collected from the Bangladeshi portion of the river. Elemental abundances and NORMs' activity were measured by neutron activation analysis and HPGe-gamma-spectrometry, respectively...
February 2, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38299676/a-prospective-ecological-risk-assessment-of-high-efficiency-iii-v-silicon-tandem-solar-cells
#25
JOURNAL ARTICLE
C F Blanco, J T K Quik, M Hof, A Fuortes, P Behrens, S Cucurachi, W J G M Peijnenburg, F Dimroth, M G Vijver
III-V/Silicon tandem solar cells offer one of the most promising avenues for high-efficiency, high-stability photovoltaics. However, a key concern is the potential environmental release of group III-V elements, especially arsenic. To inform long-term policies on the energy transition and energy security, we develop and implement a framework that fully integrates future PV demand scenarios with dynamic stock, emission, and fate models in a probabilistic ecological risk assessment. We examine three geographical scales: local (including a floating utility-scale PV and waste treatment), regional (city-wide), and continental (Europe)...
February 1, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38293890/nano-mineral-assemblages-in-mercury-and-silver-contaminated-soils-records-of-sequestration-transformation-and-release-of-mercury-and-silver-bearing-nanoparticles
#26
JOURNAL ARTICLE
Michael Schindler, Ainsleigh Loria, Yann Rene Ramos-Arroyo, Feiyue Wang
Mercury-bearing nano-mineral assemblages (Hg-NMAs) are chemically and mineralogically heterogeneous, micrometer-sized aggregates of nanoparticles (NPs) found in contaminated soils and sediments. Although these NMAs control sequestration and release of Hg that is a global contaminant, our understanding is limited with respect to the conditions of different types of Hg-NMAs, the diversity of its minerals, the size distribution of its NPs and whether mineral replacement and alteration reactions in these NMAs result in the release of Hg-bearing NPs...
January 31, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38289156/characteristics-and-ecological-risks-of-microplastic-pollution-in-a-tropical-drinking-water-source-reservoir-in-hainan-province-china
#27
JOURNAL ARTICLE
Ling Mo, Hongyu Fu, Qiyuan Lu, Sifan Chen, Ruijuan Liu, Jun Xiang, Qiao Xing, Licheng Wang, Kexin Sun, Bowen Li, Jing Zheng
Microplastic (<5 mm) pollution has become a pressing environmental concern in recent years. The present study investigated the occurrence characteristics and assessed the ecological risk of microplastics in the surface water and sediment of the Chitian Reservoir, a drinking water source in Hainan province (China). The results indicated that microplastics were detected in the surface water and sediment of the Chitian Reservoir and its surrounding areas. The overall abundance of microplastics in the water was 3...
January 30, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38284178/isotopes-and-otolith-chemistry-provide-insight-into-the-biogeochemical-history-of-mercury-in-southern-flounder-across-a-salinity-gradient
#28
JOURNAL ARTICLE
Dana K Sackett, Jared K Chrisp, Troy M Farmer
Methylmercury (MeHg) continues to pose a significant global health risk to wildlife and humans through fish consumption. Despite numerous advancements in understanding the mercury (Hg) cycle, questions remain about MeHg sources that accumulate in fish, particularly across transitional coastal areas, where harvest is prominent and Hg sources are numerous. Here we used a unique combination of Hg and nutrient isotopes, and otolith chemistry to trace the biogeochemical history of Hg and identify Hg sources that accumulated in an economically important fish species across Mobile Bay, Alabama (USA)...
January 29, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38282562/impact-of-agricultural-activities-on-the-occurrence-of-n-nitrosamines-in-an-aquatic-environment
#29
JOURNAL ARTICLE
Yingjie Chen, Huanfang Huang, Wenwen Chen, Xuelian Huang, Yuan Zhang, Yanpeng Liang, Honghu Zeng, Hao Zhang, Shihua Qi
N -Nitrosamines, nitroso compounds with strong carcinogenic effects on humans, have been frequently detected in natural waters. In agricultural areas, there is typically a lack of drinking water treatment processes and distribution systems. As a result, residents often consume groundwater as drinking water which may contain N -nitrosamines, necessitating the investigation of the occurrence, sources, and carcinogenic risk of N -nitrosamines within the groundwater of agricultural areas. This study identified eight N -nitrosamines in groundwater and river water in the Jianghan Plain, a famous agricultural region in central China...
January 29, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38270214/emerging-investigator-series-impacts-of-land-use-on-dissolved-organic-matter-quality-in-agricultural-watersheds-a-molecular-perspective
#30
JOURNAL ARTICLE
Sethumadhavan A, Liang T, Mangal V
In aquatic systems, dissolved organic matter (DOM) has important ecological and biogeochemical functions, where the molecular composition of DOM has larger-scale implications for climate change and global carbon cycles. However, there is limited information about the relationships between landscape characteristics and human disturbance that influence the molecular composition of DOM changes in watersheds. In this study, we collected water samples from 22 sites across a gradient of topographically characterized agricultural land coverage and community infrastructure development in the Kawartha region in Ontario, Canada...
January 25, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38258910/disruption-and-recovery-of-outdoor-bioaerosols-before-during-and-after-the-covid-19-outbreak-at-a-campus-in-central-china-pathogen-composition-particle-size-distribution-influencing-factors-and-exposure-risk
#31
JOURNAL ARTICLE
Yanjie Wang, Haoran Zhu, Song Zhang, Kai Yang, Yang Liu, Bisheng Lai, Fangfang Yu
Before (2019), during (2020), and after (2021) the COVID-19 outbreak, different response methods and measures were taken on campuses to control the spread of COVID-19 within schools. These response methods may have changed the outdoor bioaerosol characteristics, which may affect staff and student health. Therefore, we analyzed the bacterial concentrations, particle size distribution, microbial populations, exposure risks, and environmental influences of bioaerosols at a campus before, during, and after the COVID-19 outbreak...
January 23, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38258874/does-green-mean-clean-volatile-organic-emissions-from-regular-versus-green-cleaning-products
#32
JOURNAL ARTICLE
Ellen Harding-Smith, David R Shaw, Marvin Shaw, Terry J Dillon, Nicola Carslaw
Cleaning products emit a range of volatile organic compounds (VOCs), including some which are hazardous or can undergo chemical transformations to generate harmful secondary pollutants. In recent years, "green" cleaners have become increasingly popular, with an implicit assumption that these are better for our health and/or the environment. However, there is no strong evidence to suggest that they are better for indoor air quality compared to regular products. In this study, the VOC composition of 10 regular and 13 green cleaners was examined by headspace analysis...
January 23, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38258502/effects-of-carbonate-on-ferrihydrite-transformation-in-alkaline-media
#33
JOURNAL ARTICLE
Ying Li, Chaoqun Zhang, Meijun Yang, Jing Liu, Hongping He, Yibing Ma, Yuji Arai
Alkaline media widely exist in natural and engineered systems such as semiarid/arid areas, radioactive waste sites, and mine tailings. In these settings, the commonly occurring iron (oxyhydr)oxides differed in their ability to influence the fate of nutrients and contaminants. Due to the substantially increased atmospheric carbon dioxide (CO2 ) concentration, carbonate stands to increase in these media. However, how increasing carbonate affects the transformation of poorly crystalline iron (oxyhydr)oxides ( e...
January 23, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38250811/adsorption-of-copper-by-naturally-and-artificially-aged-polystyrene-microplastics-and-subsequent-release-in-simulated-gastrointestinal-fluid
#34
JOURNAL ARTICLE
Lu Zhou, Thibault Masset, Florian Breider
Microplastics, especially aged microplastics can become vectors of metals from environment to organisms with potential negative effects on food chain. However, a few studies focused on the bioavailability of adsorbed metals and most studies related to aged microplastics used artificial method that cannot entirely reflect actual aging processes. In this study, virgin polystyrene was aged by ozone (PS-O3 ), solar simulator (PS-SS) and lake (PS-lake) to investigate adsorption of Cu by virgin, artificially and naturally aged microplastics and subsequent release in simulated gastrointestinal fluids (SGF)...
January 22, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38231136/emission-inventory-of-pfass-and-other-fluorinated-organic-substances-for-the-fluoropolymer-production-industry-in-europe
#35
JOURNAL ARTICLE
Joost Dalmijn, Juliane Glüge, Martin Scheringer, Ian T Cousins
Fluoropolymers are a group of fluorinated polymers within the broad class of substances known as per- and polyfluoroalkyl substances (PFASs). During their production, a wide array of additional fluorinated organic substances (many PFASs and some not defined as PFASs) are used, formed and emitted to air and water. This study aims to assess, and make an inventory of, all emissions of PFASs and other fluorinated organic substances by the fluoropolymer production industry in Europe using available emission databases and permits...
January 17, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38226854/characterization-and-dermal-bioaccessibility-of-residual-and-listed-pfas-ingredients-in-cosmetic-products
#36
JOURNAL ARTICLE
Shahla Namazkar, Oddny Ragnarsdottir, Anton Josefsson, Felice Branzell, Sebastian Abel, Mohamed Abou-Elwafa Abdallah, Stuart Harrad, Jonathan P Benskin
As a large group of chemicals with diverse properties, per- and polyfluoroalkyl substances (PFAS) have found extensive application throughout consumer products, including cosmetics. Little is known about the importance of dermal uptake as a human exposure pathway for PFAS. Here we investigate a suite of listed-ingredient and residual PFAS in cosmetic products, along with their dermal bioaccessibility using in vitro incubations with artificial sweat. Concentrations of volatile listed ingredients (including cyclic perfluorinated alkanes, perfluorinated ethers, and polyfluorinated silanes) in three products ranged from 876-1323 μg g-1 , while polar listed ingredients ( i...
January 16, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38226490/traceable-determination-of-metal-composition-of-tyres-using-tandem-icp-ms-and-benchmarking-of-emissions-inventories
#37
JOURNAL ARTICLE
Emma C Braysher, Andrew S Brown, Richard J C Brown, Nick Molden
Non-exhaust emissions are becoming of increasing significance with respect to total particulate matter (PM) concentrations in ambient air. Of particular interest is the metal content of this PM since metallic compounds are well known to have toxic effects on human health and the environment. In this study, 'bottom-up' annual tyre wear emission rates were estimated and compared to top-down' emissions declared by the UK; it was calculated that between 14 and 25 tonnes of Zn entered the atmosphere in PM10 in 2020...
January 16, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38205846/-in-silico-approaches-for-the-prediction-of-the-breakthrough-of-organic-contaminants-in-wastewater-treatment-plants
#38
JOURNAL ARTICLE
Nicola Chirico, Michael S McLachlan, Zhe Li, Ester Papa
The removal efficiency (RE) of organic contaminants in wastewater treatment plants (WWTPs) is a major determinant of the environmental impact of chemicals which are discharged to wastewater. In a recent study, non-target screening analysis was applied to quantify the percentage removal efficiency (RE%) of more than 300 polar contaminants, by analyzing influent and effluent samples from a Swedish WWTP with direct injection UHPLC-Orbitrap-MS/MS. Based on subsets extracted from these data, we developed quantitative structure-property relationships (QSPRs) for the prediction of WWTP breakthrough (BT) to the effluent water...
January 11, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38205707/applying-a-modified-systematic-review-and-integrated-assessment-framework-syrina-a-case-study-on-triphenyl-phosphate
#39
JOURNAL ARTICLE
Thuy T Bui, Jenny Aasa, Khaled Abass, Marlene Ågerstrand, Anna Beronius, Mafalda Castro, Laura Escrivá, Audrey Galizia, Anda Gliga, Oskar Karlsson, Paul Whaley, Erin Yost, Christina Rudén
This work presents a case study in applying a systematic review framework (SYRINA) to the identification of chemicals as endocrine disruptors. The suitability and performance of the framework is tested with regard to the widely accepted World Health Organization definition of an endocrine disruptor (ED). The endocrine disrupting potential of triphenyl phosphate (TPP), a well-studied flame retardant reported to exhibit various endocrine related effects was assessed. We followed the 7 steps of the SYRINA framework, articulating the research objective via Populations, Exposures, Comparators, Outcomes (PECO) statements, performed literature search and screening, conducted study evaluation, performed data extraction and summarized and integrated the evidence...
January 11, 2024: Environmental Science. Processes & Impacts
https://read.qxmd.com/read/38189445/laboratory-measurements-underestimate-persistence-of-the-aquatic-herbicide-fluridone-in-lakes
#40
JOURNAL ARTICLE
Sydney R Van Frost, Amber M White, Josie M Jauquet, Angela M Magness, Katherine D McMahon, Christina K Remucal
Fluridone is an aquatic herbicide commonly used to treat invasive freshwater plant species such as Eurasian watermilfoil, hydrilla, and curly-leaf pondweed. However, required exposures times are very long and often exceed 100 days. Thus, understanding the mechanisms that determine the fate of fluridone in lakes is critical for supporting effective herbicide treatments and minimizing impacts to non-target species. We use a combination of laboratory and field studies to quantify fluridone photodegradation, as well as sorption and microbial degradation in water and sediment microcosms...
January 8, 2024: Environmental Science. Processes & Impacts
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