Science topic

Environmental Chemistry - Science topic

Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places. It can be defined as the study of the sources, reactions, transport, effects, and fates of chemical species in the air, soil, and water environments; and the effect of human activity on these
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Publications related to Environmental Chemistry (4,043)
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Rapid development of aquaculture industry and increasing demand of various inputs (especially antibiotics), are suspected to promote the occurrence and spread of ARGs in aquaculture related environments. However, the occurrences of ARGs under different freshwater aquaculture practices are rarely known. Here, we investigated the seasonal profiles of...
Article
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A well-managed, effective waste management program increases the health and environmental quality of the country. Therefore, the overall aim of this study was to investigate the knowledge and participation of household solid domestic waste management in some selected communities in Bo city Southern Sierra Leone. The study's objectives were: to dete...
Article
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El estudio consistió en la elaboración y evaluación de un Taller de Química Ambiental (TQA) dirigido a estudiantes y profesores de Enseñanza de las Ciencias Naturales de la Universidad Estatal a Distancia de Costa Rica (UNED-CR), con la finalidad de abarcar una serie de situaciones de aprendizaje (SA) para incluir la temática ambiental presente en...
Article
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Efficient and sustainable chemical fixation of CO2 into value-added chemicals is one of the most promising objectives in environmental chemistry. In this work, transition metal acetylacetonate immobilized onto triazolium ionic liquid-modified periodic mesoporous organosilica PMO-IL-M(x) was successfully prepared and investigated as an effective and...
Article
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As per World Resources Institute (1996), World's population is around 7.06 billion and is expected to grow by 10 billion by 2030. Due to the advancement of the industrial revolution polluted gas is pumped into the atmosphere which leads to warming of the planet earth and a rise in sea level which may result in serious food shortage. Global warming...
Article
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Abstract Excessive levels of heavy metals in the environment induce toxic effects on food crops and human health. For instance, mercury (Hg) disrupts global plant physiology and metabolism, yet Hg tolerance mechanisms in plants are not well understood at the protein level. Food security would be improved by better knowledge of Hg-induced protein ne...
Book
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This book has been presented the sciences ideas of advances in biology, agriculture and chemical sciences. Contents of each topic have been mentioned with emphasizes their illustration. All authors have contributed towards the publication of this book. Sections of biology, agricultural sciences, forestry and environmental conservation, organic chem...
Article
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The American Chemical Society’s Division of Environmental Chemistry symposium Toward Creating a Water-Energy-Food (WEF) Nexus Community of Practice, brought together 25 cross-disciplinary speakers in five thematic areas: 1) state of the art models and approaches, 2) WEF Nexus initiatives and case studies, 3) WEF governance and stakeholder engagemen...
Article
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Environmental pollution caused by petroleum hydrocarbons is being paid more and more attention worldwide. Surfactants are able to improve the solubility of petroleum hydrocarbons, but their effects on petroleum hydrocarbon degradation in composting systems are still unclear. In this study, the effects on microbial community succession were investig...
Article
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Objetivo: Discutir as contribuições e os impactos da extensão por docentes, alunos da pós-graduação stricto sensu e discentes do ensino médio do Instituto Federal de Mato Grosso do Sul (IFMS), com o tema do uso de domissanitários e os possíveis impactos ambientais, em Campo Grande, Mato Grosso do Sul, durante o isolamento social da pandemia de covi...
Article
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Understanding the chemical and physical properties of particles is an important scientific, engineering, and medical issue that is crucial to air quality, human health, and environmental chemistry. Of special interest are aerosol particles floating in the air for both indoor virus transmission and outdoor atmospheric chemistry. The growth of bio- a...
Article
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Here we review the application of molecular biological approaches to mineral precipitation in modern marine microbialites. The review focuses on the nearly two decades of nucleotide sequencing studies of the microbialites of Shark Bay, Australia; and The Bahamas. Molecular methods have successfully characterized the overall community composition of...
Article
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Seit 1996 konnte der Verfasser als Lehrkraft die biologisch-ökologischen Gewässeruntersuchungen der Sommerworkshops „Umweltanalytik und Umweltchemie“ im Feldberger Seengebiet (Mecklenburg-Vorpommern) in Theorie und Praxis betreuen. In fruchtbarer Zusammenarbeit bringt jeder Mitwirkende seine Erfahrungen und Kompetenzen ein, so dass ein anspruchsvol...
Book
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This university textbook is focused on inorganic chemistry and more particularly on materials chemistry, photochemistry and environmental chemistry. Therefore, it is intended for a student audience specialized in the field of chemistry. This university textbook can be used for the following subjects in MSc. and PhD. programmes in Inorganic Chemistr...
Book
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Green chemistry, also called sustainable chemistry, is an area of chemistry and chemical engineering focused on the design of products and processes that minimize or eliminate the use and generation of hazardous substances. While environmental chemistry focuses on the effects of polluting chemicals on nature, green chemistry focuses on the environm...
Article
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Per- and polyfluoroalkyl substances (PFAS) are a class of man-made chemicals of global concern for many health and regulatory agencies due to their widespread use and persistence in the environment (in soil, air, and water), bioaccumulation, and toxicity. This concern has catalyzed a need to aggregate data to support research efforts that can, in t...
Article
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Based on the Gini-coefficients, this study has presented an analysis of the impacts of anthropogenic forcing on the temporal inequality (i.e., increase in unevenness or disparity) of precipitation amounts (PRCPTOT), intensity (SDII), and extremes (R95p and RX5day) at national and regional scales (eight regions) in China. A positive anthropogenic in...
Article
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Snowy Grouper Hyporthodus niveatus are long‐lived, slow‐growing demersal fish that occur throughout most of the western Atlantic Ocean. Currently, Snowy Grouper in U.S. territorial waters are managed as two stocks, one along the eastern Atlantic coast and one in the Gulf of Mexico (GoM), though population connectivity throughout the region is unkno...
Research Proposal
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The quality management of all environmental components (i.e., atmosphere, water, soil/subsoil, etc.) and its subareas of environmental remediation or treatment becomes a key issue in the environmental policy of all countries, and a few targets are already recommended until 2022, or 2030. Periodic control of environment quality through common and sp...
Conference Paper
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Corrosion of steel in reinforced concrete bridges is a major concern for the structural integrity, long-term durability, and maintenance of the highway infrastructure. The corrosion mechanisms vary greatly due to the multitude of engineered highway systems with the varying exposure environments, chemistry, and construction materials. Of the many en...
Article
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Per- and polyfluoroalkyl substances (PFAS) are increasingly appearing in drinking water sources globally. Our work focuses specifically on the adsorption of the legacy perfluorooctanoic acid (PFOA) using mesoporous hafnium oxide (MHO) ceramic synthesized via a sol-gel process. Experiments were performed at varying pH to determine the effect of surf...
Article
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Fire-training areas (FTAs) are an important source of per- and polyfluoroalkyl substances (PFASs) pollution. However, the effect of PFASs on soil bacterial community remains limited. Here, we detected the PFASs in soils ranging from 3.4 to 531.7 μg kg⁻¹ dry weight in seven plots at an FTA where PFOS-restricted aqueous film-forming foams (AFFFs) hav...
Article
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The efficiency of oxidative species generation is one of the crucial parameters for the application of any system based on advanced oxidation processes (AOPs). This paper presents an approach to the correct determination of quantum yields of the hydroxyl radical upon UV photolysis of natural Fe(III) carboxylates, which are widely used in the works...
Presentation
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PCI Ecotoxicology and Environmental Chemistry ? PCI Ecotoxicology and Environmental Chemistry is a community of recommenders, playing the role of associate editors, who recommend unpublished articles based on peer reviews to make them complete, reliable and citable articles, without the need for publication in ‘traditional’ journals. Evaluation and...
Technical Report
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O Equilibrium é um jogo do tipo passatempo, gênero casual no qual o jogador realiza construções no planeta para tentar desenvolvê-lo de maneira sustentável, mas buscando obter lucros com esses recursos. Este RED foi concebido para auxiliar no ensino e na aprendizagem de conteúdos sobre Química Ambiental na área de Ciências da Natureza e suas Tecnol...
Article
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Hydrogen peroxide (H 2 O 2 ) plays a key role in environmental chemistry, biology, and medicine. H 2 O 2 concentrations typically are 6 to 10 orders of magnitude lower than that of water, making its quantitative detection challenging. We demonstrate that optimized NMR spectroscopy allows direct, interference-free, quantitative measurements of H 2 O...
Article
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Hyperpolarized contrast agents (HyCAs) have enabled unprecedented magnetic resonance imaging (MRI) of metabolism and pH in vivo. Producing HyCAs with currently available methods, however, is typically time and cost intensive. Here, we show virtually-continuous production of HyCAs using parahydrogen-induced polarization (PHIP), without stand-alone p...
Research
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Según la Real Academia Española la ciencia es el Conjunto de conocimientos obtenidos mediante la observación y el razonamiento, sistemáticamente estructurados y de los que se deducen principios y leyes generales con capacidad predictiva y comprobables experimentalmente. De entre esas palabras clave se puede advertir que la capacidad predictiva es u...
Research
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CALL FOR PAPERS I will be serving as guest editor for the special issue Intelligent Systems in Environmental Chemistry and Engineering: Application in Sorption Technologies to be published by Frontiers in Environmental Chemistry Suitable submissions within scope of the topic are hereby invited. Submission Deadlines 02 April 2022 for Abstract 01...
Article
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In this study, the maximum ozone concentrations and half-life of ozone in some drinking water and high quality pure water produced in new system devices were determined. Maximum saturation levels were 25 μg/ml in type I water; 26 μg/ml in WFI; 26 μg/ml in type II water; 28 μg/ml in type II re-distilled water; 20 μg/ml in type III water; 24 μg/ml in...
Article
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In this study, the maximum ozone concentrations and half-life of ozone in some drinking water and high quality pure water produced in new system devices were determined. Maximum saturation levels were 25 μg/ml in type I water; 26 μg/ml in WFI; 26 μg/ml in type II water; 28 μg/ml in type II re-distilled water; 20 μg/ml in type III water; 24 μg/ml in...
Article
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In the last decade, halogenated ethenes have seen an increasing interest for different applications; in particular, in refrigeration, air-conditioning and heat pumping. At the same time, their adverse effects as atmospheric pollutants require environmental monitoring, especially by remote sensing spectroscopic techniques. For this purpose, an accur...
Article
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Abstract Heavy metal pollution of river freshwater environments currently raises significant concerns due to the toxic effects and the fact that heavy metal behavior is not fully understood. This study assessed the contamination level of eight heavy metals and trace elements (Cr, Ni, Cu, Zn, As, Pb, Cd, and Hg) in the surface sediments of 19 sites...
Article
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In this paper, the concept of the functional mechanism of copolymer membrane formation is explained and analyzed from the theoretical and experimental points of view. To understand the phase inversion process and control the final membrane morphology, styrene-acrylonitrile copolymer (SAN) membrane morphology through the self-assembly phenomena is i...
Article
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The berries of Lycium barbarum L. (Goji) are widely used as a Chinese traditional herbal medicine and functional food because of their reported beneficial pharmacological effects. However, there are reports of Goji berries being contaminated by chemical residues that could pose a hazard to humans. In this study, samples of L. barbarum L. berries we...
Article
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Methyl bromide (CH 3 Br) and methyl chloride (CH 3 Cl) are major carriers of atmospheric bromine and chlorine, respectively, which can catalyze stratospheric ozone depletion. However, in our current understanding, there are missing sources associated with these two species. Here we investigate the effect of copper(II) on CH 3 Br and CH 3 Cl product...
Article
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Sodium dodecyl sulfate (SDS) is the most widely used anionic surfactant. Its frequent use causes environmental pollution and negative effects on living organisms (even at low concentrations ≈ 20 μg/ml). Thus, cheap and fast methods are needed to detect this surfactant in wastewater and surface waters in order to prevent the negative effects of SDS...
Article
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The textile industry is the main one responsible for the disposal of effluents with a high organic load and highly visible color. Biosorption is a promising alternative in the treatment, with good efficiency in removing dyes. In the present study, biosorbents were prepared from papaya peel (CM) and acerola residue (RA) and characterized by Fourier...
Article
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Asarama estuary is an inter-tidal system characterised by a number of freshwater influxes, mud flat at low tide and associated with mangrove and nipa ecosystems. The biodiversity of Asarama estuary at Andoni flat in the Niger Delta of Nigeria was surveyed in the wet and dry seasons of 2016/17. Benthic macrofauna samples were collected during the sa...
Article
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Leachate is a major problem created from municipal solid waste (MSW) landfills and is considered the worst source of surface water and groundwater pollution. Kwashe industrial area as one of the most fast developing and polluted industrial area in Kurdistan region with many factories has a large solid waste separation factory that receives approxim...
Article
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Microorganisms use a complex array of chemical compounds to interact with their surroundings. They produce and process different molecules in response to changes in the environment or in their metabolism. One of the most well-known volatile organic compounds produced by microorganisms is the C11-terpenoid 2-methylisoborneol (2-MIB), which has recei...
Article
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In the fields of mathematical chemistry, a topological index, also known as a connectivity index, is a type of a molecular descriptor that is calculated based on the molecular graph of a chemical compound. Topological indices are an analytical framework of a graph which portray its topology and are mostly equal graphs. Topological indices (TIs) are...
Article
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Scientific questions in fields such as catalysis, monitoring of biological processes, or environmental chemistry demand analytical technologies combining orthogonal spectroscopies. Combined spectroscopic concepts facilitate in situ online monitoring of dynamic processes providing a better understanding of the involved reaction pathways. In the pres...
Article
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Contaminants of emerging concern (CECs) are ubiquitous in aquatic environments across all continents and are relatively well known in the developed world. However, few studies have investigated their presence and biological effects in low- and middle-income countries. Here, we provide a first survey of CEC presence in the Volta River, Ghana and exa...
Article
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The present work focuses on the revealing the patterns of copper oxalates formation under the influence of lichens and fungi by combination of the results of field studies and model experiments. These findings create the scientific basis for the potential microbial technology applications (ore enrichment, monuments conservation, environment bioreme...
Article
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In Germany, the decline of insect biomass was observed in nature conservation areas in agricultural landscapes. One of the main causal factors discussed is the use of synthetic pesticides in conventional agriculture. In a Germany-wide field study, we collected flying insects using Malaise traps in nature conservation areas adjacent to agricultural...
Chapter
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La exposición a plaguicidas como factor de riesgo para el desarrollo de cáncer y otras enfermedades crónico-degenerativas, es un tema controversial desde la última mitad del siglo pasado. El objetivo fue analizar la información publicada en la investigación científica y vigilancia epidemiológica sobre el tema del cáncer en Baja California, en relac...
Article
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Resumo: O manejo de pesticidas nos cultivos de milho, aveia, fava e batata em Calimaya em sistemas semi-intensivo e intensivo de produção é uma fonte potencial de impactos ambientais pela contaminação do solo e da água. Baseando-se em atributos químicos e físicos de substâncias ativas de pesticidas, identificadas em trabalho de campo na zona agríco...
Article
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The concentration of nitrate in natural surface waters by agricultural runoff remains a challenging problem in environmental chemistry. One promising denitrification strategy is to utilize photocatalysts, whose light-driven excited states are capable of reducing nitrate to nitrogen gas. We have synthesized and characterized pristine and silver-load...
Article
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Unhealthy soils in peri-urban and urban areas expose individuals to potentially toxic elements (PTEs), which have a significant influence on the health of children and adults. Hundred and fifteen (n = 115) soil samples were collected from the district of Frydek Mistek at a depth of 0-20 cm and measured for PTEs content using Inductively coupled pla...
Article
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Electrochemistry is the science that study, the effect of the electricity on the phase of matter by producing chemical reactions, which causes this effect. Several applications and technologies such as; batteries, fuel cells, and industries, such as aluminum industry depend on theories of electrochemistry science. Integration of electrochemistry wi...
Article
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In this study, a novel magnetic mesoporous silica with yolk–shell structure (Fe 3 O 4 @Void@m.SiO 2 ) was successfully synthesized via a polymer-template assisted method. The Fe 3 O 4 @Void@m.SiO 2 was characterized by using FT-IR, EDS, SEM, TEM, VSM, PXRD and nitrogen adsorption–desorption analyses. The Fe 3 O 4 @Void@m.SiO 2 nanocomposite showed...
Article
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The extension of human space exploration from a low earth orbit to a high earth orbit, then to Moon, Mars, and possibly asteroids is NASA’s biggest challenge for the new millennium. Integral to this mission is the effective, sufficient, and reliable supply of cryogenic propellant fluids. Therefore, highly energy-efficient thermal-fluid management b...
Article
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Widespread coral mortality is leading to coral reef degradation worldwide. Many juvenile reef fishes settle on live coral, and their predator-avoidance behaviour is disrupted in seawater exposed to dead corals, ultimately increasing predation risk. Gnathiid isopods are micropredatory fish ectoparasites that occur in higher abundances in dead coral....
Article
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Carbon aerogels prepared from resorcinol-formaldehyde aerogels are promising platforms for electrodes, catalysts, adsorbents in environmental chemistry and as electric conductors. For these applications the knowledge of their structure and behavior in aqueous medium is essential. In this work two resorcinol-formaldehyde (RF) carbon aerogels prepare...
Article
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Equilibrium partition coefficients or partition ratios are a fundamental concept in physical chemistry, with wide applications in environmental chemistry. While comprehensive data compilations for the octanol–water partition ratio and the Henry’s law constant have existed for many years, no comparable effort for the octanol–air partition ratio (KOA...
Article
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Highly-efficient solar cells containing lead halide perovskites are expected to revolutionize sustainable energy production in the coming years. Perovskites are generally assumed to be toxic because of the lead (Pb), but experimental evidence to support this prediction is scarce. We tested the toxicity of the perovskite MAPbI3 (MA = CH3NH3) and sev...
Article
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Data tables for machine learning and structure‐activity relationship modelling (QSAR) are often naturally organized in blocks of data, where multiple molecular representations or sets of descriptors form the blocks. Multi‐block Orthogonal Component Analysis (MOCA), a new analytical tool, can be used to explore such data structures in a single model...
Conference Paper
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RESUMO Os fármacos de uso humano destacam-se dentre os contaminantes de preocupação emergente (CE), sendo esses um desafio atual para a gestão das águas e a garantia de sua qualidade. A hidroclorotiazida, um diurético e anti-hipertensivo de baixa metabolização no organismo humano, vem sendo detectada em concentrações na faixa de microgramas a nanog...
Article
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References Abowei, J. F. N. (2009). The abundance, condition factor and length–weight relationship of Cynoglossus senegalensis (Kaup, 1858) from Nkoro River Niger Delta, Nigeria. Advance Journal of Food Science and Technology, 1(1), 56–61. Abowei, J. F. N., & George, A. D. I. (2009). A study of the length–weight relationship and condition factor of...
Article
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In this study, we customized magnetic sorbents by functionalizing silica coated magnetite with octadecyl(C 18 )silane (Fe 3 O 4 @SiO 2 @C 18 ). This sorbent was intended for the determination of trace orthophosphate ( o -PO 4 ³⁻ ) in unpolluted freshwater samples. The o -PO 4 ³⁻ was transformed to phosphomolybdenum blue (PMB), a known polyoxometala...