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https://www.readbyqxmd.com/read/28549332/synthesis-and-characterization-of-fullerene-modified-znalti-ldo-in-photo-degradation-of-bisphenol-a-under-simulated-visible-light-irradiation
#1
Liting Ju, Pingxiao Wu, Xiaolin Lai, Shanshan Yang, Beini Gong, Meiqing Chen, Nengwu Zhu
In this study, ZnAlTi layered double hydroxide (ZnAlTi-LDH) combined with fullerene (C60) was fabricated by the urea method, and calcined under vacuum atmosphere to obtain nanocomposites of C60-modified ZnAlTi layered double oxide (ZnAlTi-LDO). The morphology, structure and composition of the nanocomposites were analyzed by Scanning Electron Microscopy, High-resolution transmission electron microscopy, X-ray diffraction patterns, Fourier transform infrared and specific surface area. The UV-vis diffuse reflectance spectra indicated that the incorporation of C60 expanded the absorption of ZnAlTi-LDO to visible-light region...
May 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28549328/enhanced-photocatalytic-hydrogen-production-from-aqueous-sulfide-sulfite-solution-by-zno0-6s0-4-with-simultaneous-dye-degradation-under-visible-light-irradiation
#2
Ka Him Chu, Liqun Ye, Wei Wang, Dan Wu, Donald Ka Long Chan, Cuiping Zeng, Ho Yin Yip, Jimmy C Yu, Po Keung Wong
Photocatalytic hydrogen (H2) production was performed by visible-light-driven (VLD) ternary photocatalyst, zinc oxysulfide (ZnO0.6S0.4) in the presence of sulfide/sulfite (S2(2-)/SO3(2-)) sacrificing system, with simultaneous azo-dye Reactive Violet 5 (RV5) degradation. Enhancement in both RV5 degradation and H2 production was achieved, with the promotion of H2 production after decolorization of RV5. The effect of initial concentration of RV5 was found to be influential on the enhancement of H2 during the simultaneous processes, with a maximum of 110% increase of H2 produced...
May 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28549325/graphene-oxide-in-the-water-environment-could-affect-tetracycline-antibiotic-resistance
#3
Mei-Ting Guo, Guo-Sheng Zhang
In recent years, the influence of new materials like nanoparticles in the water environment on biological substances has been widely studied. Antibiotic resistance genes (ARGs) represent a new type of pollutant in the environment. Graphene oxide (GO), as a nano material, because of its unique structure, may have an impact on antibiotic resistance bacteria (ARB) and ARGs; however the research in this area is rarely reported. Therefore, this study mainly investigated the effects of GO on bacterial antibiotic resistance...
May 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28549323/investigation-of-submicron-aerosol-characteristics-in-changzhou-china-composition-source-and-comparison-with-co-collected-pm2-5
#4
Zhaolian Ye, Qing Li, Jiashu Liu, Shipeng Luo, Quanfa Zhou, Chenglu Bi, Shuaishuai Ma, Yanfang Chen, Hui Chen, Ling Li, Xinlei Ge
Mass concentrations and chemical compositions of submicron particles (PM1) collected during July 2015 to April 2016 in Changzhou, a city in the Yangtze River Delta region, were systematically investigated for the first time. Specifically, an Aerodyne soot particle aerosol mass spectrometer (SP-AMS) was employed to characterize the water-soluble organic matter (WSOM). The average concentration of PM1 was 63.6 μg m(-3), occupying ∼60% of co-collected PM2.5 mass. Water soluble inorganic ions (WSIIs) was the most abundant component with secondary ions (SO4(2-), NO3(-) and NH4(+)) as the dominant species...
May 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28549316/method-for-assessment-of-stormwater-treatment-facilities-synthetic-road-runoff-addition-including-micro-pollutants-and-tracer
#5
Karin Cederkvist, Marina B Jensen, Peter E Holm
Stormwater treatment facilities (STFs) are becoming increasingly widespread but knowledge on their performance is limited. This is due to difficulties in obtaining representative samples during storm events and documenting removal of the broad range of contaminants found in stormwater runoff. This paper presents a method to evaluate STFs by addition of synthetic runoff with representative concentrations of contaminant species, including the use of tracer for correction of removal rates for losses not caused by the STF...
May 23, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28549314/application-of-novel-metal-organic-framework-mil-53-fe-and-its-magnetic-hybrid-for-removal-of-pharmaceutical-pollutant-doxycycline-from-aqueous-solutions
#6
Shakiba Naeimi, Hossein Faghihian
As a pharmaceutical pollutant, doxycycline causes contamination when enters into the environment. In this research MIL-53(Fe), and its magnetic hybrid MIL-53(Fe)/Fe3O4 were synthesized and employed for removal of doxycycline from aqueous solutions. The adsorbents were characterized by XRD, SEM, BET, FTIR, EDAX, VSM and TG-DTG technique. The effect of different variables such as DOC concentration, pH, contacting time, and adsorbent dose on the removal efficiency was studied and under optimized conditions the adsorption capacity of 322mgg(-1) was obtained...
May 11, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28549289/identifying-the-source-of-zn-in-soils-around-a-zn-smelter-using-pb-isotope-ratios-and-mineralogical-analysis
#7
Soo-Kyung Jeon, Man Jae Kwon, Jung-Seok Yang, Seunghak Lee
The contribution by anthropogenic sources to abnormally high Zn concentrations in soils with naturally abundant Zn was investigated at a contaminated site surrounding a Zn smelter in eastern Korea. Nineteen soil samples were collected within a 2km radius of the smelter, and analyzed for metal concentrations and Pb isotope ratios using an inductively coupled plasma-optical emission spectrometer and -mass spectrometer, respectively. Higher Zn concentrations in locations closer to the smelter implied that the smelter was the source of the Zn pollution...
May 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28549275/understanding-the-relationships-between-water-quality-recreational-fishing-practices-and-human-health-in-phoenix-arizona
#8
E Pulford, B A Polidoro, M Nation
Across the United States, recreational freshwater fisheries are not only an important leisure activity, but can also provide a relatively inexpensive source of protein in local diets. However, recreational freshwater fisheries are generally not well-monitored in terms of fish consumption vs. catch and release, nor are all recreational surface waters regularly monitored for the presence of potentially harmful contaminants in water or fishes. In six urban lakes that support recreational fisheries in Phoenix, Arizona, a majority of surveyed anglers reported eating recreationally caught fishes, even though they thought the water might be polluted...
May 23, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28549274/mechanisms-and-risk-of-cumulative-impacts-to-coastal-ecosystem-services-an-expert-elicitation-approach
#9
Gerald G Singh, Jim Sinner, Joanne Ellis, Milind Kandlikar, Benjamin S Halpern, Terre Satterfield, Kai M A Chan
Coastal environments are some of the most populated on Earth, with greater pressures projected in the future. Managing coastal systems requires the consideration of multiple uses, which both benefit from and threaten multiple ecosystem services. Thus understanding the cumulative impacts of human activities on coastal ecosystem services would seem fundamental to management, yet there is no widely accepted approach for assessing these. This study trials an approach for understanding the cumulative impacts of anthropogenic change, focusing on Tasman and Golden Bays, New Zealand...
May 23, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28549272/acute-toxicity-of-emerging-atmospheric-pollutants-from-wood-lignin-due-to-biomass-burning
#10
Maryline Pflieger, Ana Kroflič
Guaiacol (2-methoxyphenol) is an important atmospheric pollutant. It is the major component of wood lignin and is essentially emitted to the atmosphere during biomass burning. Its aging in the tropospheric aqueous phase leads to the generation of the following ring-retaining transformation products, also during nighttime: 4-nitroguaiacol, 6-nitroguaiacol, and dinitroguaiacol. This study presents the first toxicological data of guaiacol and its nitro derivatives and reveals their harmful potential for the ecosystem...
May 15, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28549212/synthesis-of-four-monoterpene-derived-organosulfates-and-their-quantification-in-atmospheric-aerosol-samples
#11
Yuchen Wang, Jingyun Ren, X H Hilda Huang, Rongbiao Tong, Jian Zhen Yu
Monoterpenes, a major class of biogenic volatile organic compounds, are known to produce oxidation products that further react with sulfate to form organosulfates. The accurate quantification of monoterpene-derived organosulfates (OSs) is necessary for quantifying this controllable aerosol source; however, it has been hampered by a lack of authentic standards. Here we report a unified synthesis strategy starting from the respective monoterpene through Upjohn dihydroxylation or Sharpless asymmetric dihydroxylation followed by mono-sulfation with sulfur trioxide-pyridine complex...
May 26, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28548694/towards-a-proportionality-assessment-of-risk-reduction-measures-aimed-at-restricting-the-use-of-persistent-and-bioaccumulative-substances
#12
Frans Oosterhuis, Roy Brouwer, Martien Janssen, Julia Verhoeven, Cees Luttikhuizen
International chemicals legislation aims at adequately controlling persistent organic pollutants (POPs) and substances of very high concern (SVHCs), such as persistent, bioaccumulative and toxic (PBT) and very persistent and very bioaccumative (vPvB) substances, with a view to progressively substitute these substances with suitable less hazardous alternatives. Using cost-effectiveness analysis to assess the (dis)proportionality of measures to control such substances (collectively called PBT in this paper) requires benchmarks...
May 26, 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28548175/the-water-based-synthesis-of-chemically-stable-zr-based-mofs-using-pyridine-containing-ligands-and-their-exceptionally-high-adsorption-capacity-for-iodine
#13
Zhe Wang, Ying Huang, Jian Yang, Yongsheng Li, Qixin Zhuang, Jinlou Gu
The primary pollutant, radioactive iodine (I2), has become a worldwide concern due to its serious ill effects of radiotoxicity on human health. Therefore, it is of great significance to develop novel adsorbents for effectively eliminating I2 from nuclear waste. Herein, we reported a Zr-based MOF adsorbent constructed by utilizing pyridine-containing pyridine-dicarboxylic acid (PYDC) as organic ligands (UiO-66-PYDC) as well as active sites for the efficient removal of I2. UiO-66-PYDC MOFs were synthesized by a hydrothermal strategy and featured good chemical and thermal stabilities, endowing them with the ability to work in harsh environments...
May 26, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28547375/the-effects-of-ozone-on-human-health
#14
Daniela Nuvolone, Davide Petri, Fabio Voller
Ozone is a highly reactive, oxidative gas associated with adverse health outcome, including mortality and morbidity. Data from monitoring sites worldwide show levels of ozone often exceeding EU legislation threshold and the more restrictive WHO guidelines for the protection of human health. Well-established evidence has been produced for short-term effects, especially on respiratory and cardiovascular systems, associated to ozone exposure. Less conclusive is the evidence for long-term effects, reporting suggestive associations with respiratory mortality, new-onset asthma in children and increased respiratory symptom effects in asthmatics...
May 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28547369/air-protection-programmes-in-poland-in-the-context-of-the-low-emission
#15
Janusz Adamczyk, Arkadiusz Piwowar, Maciej Dzikuć
The protection of the air against pollutants from individual boiler plants is a big challenge in Poland. It results mainly from the preference for coal, the national energy carrier, the use of old low-efficiency boilers and the location of Poland in a temperate climate where the heating period lasts at least 5 months. This article presents a wide range of activities aimed at the reduction of the environmental impact of the emissions of pollutants from individual heat sources-the so-called low emission. The article presents the extent of the national legislation resulting from the European Union regulations...
May 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28546906/recent-progress-in-energy-driven-water-splitting
#16
REVIEW
Si Yin Tee, Khin Yin Win, Wee Siang Teo, Leng-Duei Koh, Shuhua Liu, Choon Peng Teng, Ming-Yong Han
Hydrogen is readily obtained from renewable and non-renewable resources via water splitting by using thermal, electrical, photonic and biochemical energy. The major hydrogen production is generated from thermal energy through steam reforming/gasification of fossil fuel. As the commonly used non-renewable resources will be depleted in the long run, there is great demand to utilize renewable energy resources for hydrogen production. Most of the renewable resources may be used to produce electricity for driving water splitting while challenges remain to improve cost-effectiveness...
May 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28546266/health-related-quality-of-life-and-risk-factors-associated-with-spirometric-restriction
#17
Stefano Guerra, Anne-Elie Carsin, Dirk Keidel, Jordi Sunyer, Bénédicte Leynaert, Christer Janson, Debbie Jarvis, Daiana Stolz, Thomas Rothe, Marco Pons, Alexander Turk, Josep M Anto, Nicole Probst-Hensch
The restrictive spirometric pattern is associated with a substantial morbidity and mortality burden. We sought to determine to what extent spirometric restriction is associated with impaired quality of life.We used data from two large population-based European cohorts: 6698 European Community Respiratory Health Survey (ECRHS) and 6069 Swiss Cohort Study on Air Pollution and Lung and Heart Diseases in Adults (SAPALDIA) adult participants. The restrictive pattern was defined as forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) ≥lower limit of normal (LLN) and FVC <LLN; an obstructive pattern was defined as FEV1/FVC <LLN independent of FVC...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28545939/relationship-between-climatic-factors-and-air-quality-with-tuberculosis-in-the-federal-district-brazil-2003-2012
#18
Fernanda Monteiro de Castro Fernandes, Eder de Souza Martins, Daniella Melo Arnaud Sampaio Pedrosa, Maria do Socorro Nantua Evangelista
INTRODUCTION: Despite the high rate of tuberculosis (TB) indicators in Brazil, the Federal District (FD) shows a low prevalence of the disease. OBJECTIVE: To analyze the relationship between climatic factors and air quality with tuberculosis in the Brazilian Federal District. METHODOLOGY: This was an ecological and descriptive study comparing 3927 new cases of TB registered at the Federal District Tuberculosis Control Program with data from the National Institute of Meteorology, Brazilian Institute of Geography and Statistics, Brazilian Agricultural Research Institute, Brasilia Environmental Institute, and the Federal District Planning Company...
May 22, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28545847/sources-and-behaviour-of-nitrogen-compounds-in-the-shallow-groundwater-of-agricultural-areas-poyang-lake-basin-china
#19
Evgeniya Soldatova, Natalia Guseva, Zhanxue Sun, Valeriy Bychinsky, Pascal Boeckx, Bai Gao
Nitrogen contamination of natural water is a typical problem for various territories throughout the world. One of the regions exposed to nitrogen pollution is located in the Poyang Lake basin. As a result of agricultural activity and dense population, the shallow groundwater of this area is characterised by a high concentration of nitrogen compounds, primarily NO3(-), with the concentration varying from 0.1mg/L to 206mg/L. Locally, high ammonium content occurs in the shallow groundwater with low reduction potential Eh (<100mV)...
May 17, 2017: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/28545656/cord-plasma-insulin-and-in-utero-exposure-to-ambient-air-pollution
#20
Narjes Madhloum, Bram G Janssen, Dries S Martens, Nelly D Saenen, Esmée Bijnens, Wilfried Gyselaers, Joris Penders, Charlotte Vanpoucke, Wouter Lefebvre, Michelle Plusquin, Tim S Nawrot
INTRODUCTION: Cardio-metabolic risk factors including insulin levels are at young age barely perceived as harmful, but over time these risk factors may track and lead to higher risk of metabolic syndrome. Studies showed that exposure to air pollution is associated with an increased risk of insulin resistance in childhood. We determined whether the origin of type 2 diabetes can be found in the early childhood by examining the levels of insulin in the neonatal cord blood and whether this can be considered as a disease marker for later life...
May 22, 2017: Environment International
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