Articles tagged with Environmental Chemistry
Researchers are developing nonmetallic quantum dots to identify and separate pollutants from water, including pesticides, surfactants, metal ions, antibiotics, and dyes. The dots can also be used to break down pollutants and help treat oil spills.
A recent study by UFZ and AWI researchers found significant accumulations of plastics in the North Pacific Ocean, extending far beyond the Great Pacific Garbage Patch. Microplastics were also discovered in a remote marine protected area northwest of Hawaii, challenging previous assumptions about their distribution.
Researchers found associations between prenatal vitamin and metal exposures and epigenetic aging biomarkers in early life. A one standard deviation increase in essential metals was associated with lower Horvath EAA at birth, while arsenic was linked to greater EAA at birth and in childhood.
Researchers at Oregon State University have identified a metal-organic framework that can completely remove and break down glyphosate, a widely used herbicide. The material, Sc-TBAPy, shows faster adsorption and photodegradation of glyphosate compared to other MOFs.
Researchers found stable tuna mercury concentrations worldwide from 1971 to 2022, except for a slight increase in the northwestern Pacific Ocean. The team suggests upward mixing of 'legacy' mercury as a possible cause, which could take up to 25 years to influence oceanic levels.
Researchers have created fluorescent, colour-changing dyes that can visualise multiple distinct biological environments using only one dye. These dyes enable 'time travel' within cells by allowing scientists to distinguish between cellular and delivery vessel environments in real-time. The breakthrough has significant implications for ...
Scientists have developed a cage-like molecule to trap sulfate in water, which could help control its concentration in health, industry, and environmental management. The molecular trap can be prepared inexpensively from off-the-shelf chemicals and has potential applications in medicine, such as treating cystic fibrosis.
Researchers at BESSY II used RIXS and DFT simulations to analyze the electronic structures of fumarate, maleate, and succinate dianions. The study found that maleate is potentially less stable than fumarate and succinate due to its delocalized HOMO orbital, which can lead to weaker binding with molecules or ions.
Researchers propose new statistical index to detect river ecosystem changes, potentially preventing tragedies like the Oder River crisis. The developed index is more versatile and responsive to variations in individual parameter values.
Scientists have found a shallow soda lake in western Canada that meets the conditions required for life to emerge, including high levels of dissolved phosphate. This discovery provides new support for the idea that life could have emerged from lakes on early Earth, around 4 billion years ago.
A team at Pohang University of Science & Technology has successfully created the world's first plumber's nightmare structure in block copolymers, a complex configuration where polymer chain ends coalesce inward. This achievement showcases the potential for self-assembly in block copolymers and opens up new possibilities for materializi...
Researchers from Kumamoto University found that freshwater phytoplankton in Lake Baikal produce DMSP abundantly, which acts as an osmolyte and protects the phytoplankton against osmotic pressure. The study reveals a cryoprotective role of DMSP for the survival of planktons in freshwater ice.
A dry-packaged hydrating facial mask made of biobased and sustainable materials provides a more environmentally friendly alternative to traditional sheet masks. The mask's ingredients, including plant-based polylactic acid and green tea extract, deliver moisture and nutrients while promoting antioxidant properties.
Researchers used a new technique to count tiny plastic particles in bottled water, finding an average of 240,000 detectable fragments per liter, 10 times greater than previous estimates. Nanoplastics, smaller than microplastics, can pass through the bloodstream and reach organs like the heart and brain.
Research using a high-resolution climate model found that global warming amplifies the strength of typhoons in East Asia, leading to increased intense rainfall and powerful storms. The study suggests that continued escalation of global warming will result in stronger typhoons and more extensive occurrences of extreme precipitation events.
Researchers found that live Christmas trees emit monoterpenes, which can react with ozone and form new compounds like formaldehyde. The concentration of VOCs decreases over time, but can still impact people sensitive to them.
Researchers discovered traces of sunscreen agents in Arctic snow, with highest concentrations found in winter. The study suggests these contaminants are transported from lower latitudes via atmospheric circulation.
Scientists created a new type of foam packaging from upcycled cardboard waste, which is stronger and more insulating than traditional plastic-based cushioning. The biodegradable foam has excellent thermal insulation, energy-absorbing properties, and outstanding cushioning capabilities.
Miniaturized electrochemical sensors offer low-cost, time-efficient analysis and high specificity and sensitivity for toxic heavy metal detection. However, limitations in selectivity, detail, and interference by foreign species hinder on-site analysis.
The study shows that PFAS-treated gear repels water but not oil or hydraulic fluid, posing a flammability hazard to firefighters. The research also reveals that PFAS-free gear performs similarly in terms of strength, but loses its oil-repelling properties after aging tests.
The global EV battery industry is projected to exceed 600 MtCO2eq in emissions by 2050, mainly due to energy-intensive mining and refining processes. Shifting to less CO2-intensive battery chemistries like LFP could reduce emissions by 20%.
A team of NTU scientists found a mix of harmful microorganisms, including Labyrinthulaceae and Lyngbya, that can poison marine life. However, they also discovered potential plastic-eating bacteria, such as Muricauda and Halomonas, which could aid in plastic degradation.
Researchers at Texas A&M University have developed a miniature, injectable glucose biosensor and wearable device that enables user-friendly, minimally-invasive continuous glucose monitoring. The device addresses challenges associated with existing CGMs, including size and skin tone compatibility.
A research team employed deep learning techniques to scrutinize dam operation patterns, achieving remarkable accuracy in forecasting dam water levels. The study demonstrates the potential of an artificial intelligence model trained on extensive big data to surpass conventional physical models.
Researchers from GIST have developed a new electrode using Schottky junctions to overcome the conductance limit of active catalysts, achieving high-performance water splitting and hydrogen evolution reactions. The electrode demonstrated remarkable current density and durability during continuous operation for 10 days.
Researchers analyzed microplastics in mountain clouds and found they can modify particles in ways that enable them to affect cloud formation. The study also found that clouds can increase the presence of toxic metals on these particles.
A research team developed a multi-model projection system using the self-calibrating Effective Drought Index to predict drought and recommend cumulative precipitation for recovery. The required rainfall for drought recovery was estimated at 170 mm, 310 mm, and 440 mm for March, April, and May respectively.
A new study reveals that C4 crops are significantly less sensitive to ozone pollution than C3 crops, with potential implications for improving crop productivity and resilience. The research suggests that C4 bioenergy feedstocks can maintain performance in regions with high ozone levels.
Researchers at the University of California - Berkeley have developed a simple and green way to convert flared natural gas into economically valuable liquids, mostly alcohols like methanol and ethanol. The process utilizes a porous metal-organic framework (MOF) that mimics the oxygenation reaction in plants and animals.
Researchers developed a waterproof device that captures and enriches dissolved compounds in seawater, revealing diverse elemental compositions and unknown molecular structures, with potential applications for drug discovery and ecosystem health monitoring.
A new study reveals that methylmercury uptake in phytoplankton is influenced by the presence of thiols in water. Thiols bind mercury strongly, limiting its availability to organisms. This process can result in dramatic enrichment of methylmercury levels in aquatic environments.
A University of Houston research team integrated machine learning with SHAP analysis to identify the city's air pollution sources more accurately. The study found that the oil and gas industry had the highest impact on emissions, while shortwave radiation and relative humidity were key influencing factors for overall ozone concentration.
Researchers have developed catalysts that combine iridium and ruthenium, preserving their excellent attributes and improving activity and stability. The study also explores the importance of carefully selecting candidate materials and retaining superior properties even after nanostructure formation.
Scientists developed a synthetic melanin that accelerates wound healing and protects against sun damage. The cream also quiets the immune system, allowing for continuous repair and reducing inflammation.
Research from Harvard John A. Paulson School of Engineering and Applied Sciences estimates that humans have increased atmospheric mercury levels sevenfold, with a pre-anthropogenic baseline of around 580 megagrams. Human emissions from coal-fired power plants and waste-incineration are responsible for the majority of this increase.
A new polymer binder is introduced to address durability issues in dual-ion batteries. The binder features azide and acrylate groups, which enhance the structural integrity of graphite during charge and discharge cycles. Dual-ion batteries equipped with this binder demonstrate exceptional performance, even after 3,500 recharge cycles.
Researchers have introduced a new technique for detecting per- and polyfluoroalkyl substances (PFAS) in water samples using interrupted energy transfer. The detection limit is in the µg/l range, making it suitable for on-site testing in highly contaminated regions.
A University of Oklahoma-led study highlights newly measured extremes in stratospheric water vapor recorded during the DCOTSS field project. High-level thunderstorms enhance water vapor in the stratosphere at levels higher than previously understood.
Researchers at UTSA have been awarded a grant to develop a new technology that converts carbon dioxide into a raw material for producing chemical products. The project has the potential to create a productive area of catalysis research and reduce greenhouse emissions.
A Duke University study found glyphosate, active in Roundup, in high levels of wells supplying drinking water to Sri Lankan communities plagued by chronic kidney disease (CKDu). Elevated fluoride and vanadium also linked to CKDu were discovered. Glyphosate's persistence in hard water poses concerns for exposure.
Researchers found high levels of ultrashort PFAS compounds in human samples and indoor environments, suggesting they may be a significant source of exposure. The study's findings highlight the need for further investigation into the sources and health impacts of these emerging contaminants.
Researchers developed a method to form tailored nanoscale windows in porous materials called MOFs using an architectural arch-forming template. This approach enables precise control over structure formation, leading to the creation of new materials with potential gas separation, medical applications and energy security benefits.
A multidisciplinary team investigates hospital wastewater samples and demonstrates the effectiveness of photocatalytic treatment in reducing pharmaceutically active compounds and bacteria. The study highlights the challenges posed by antibiotic-resistant bacteria and suggests a promising step towards sustainable wastewater treatment.
Researchers detected nine types of polymers and one type of rubber in cloud water, confirming microplastics play a key role in rapid cloud formation. The presence of hydrophilic polymers in the atmosphere could lead to significant changes in ecological balance and severe loss of biodiversity.
Researchers developed a novel material that self-assembles into micelle structures targeting cancer cell lysosomes, specifically interacting with Cathepsin B. This leads to dysfunctional lysosomes and apoptotic death of cancer cells. The technology promises a new approach to combat drug resistance in cancer treatment.
The new facility will enhance the lab's capabilities to study the impact of chemicals and nanomaterials on human health, with applications in areas like toxicology and disease prevention.
A team of researchers at UNIST has developed solid electrolyte materials utilizing metal-organic frameworks (MOFs) to improve the efficiency of hydrogen fuel cells. The new materials demonstrate high hydrogen ion conductivity and durability, holding promise for advancing sustainable energy solutions.
A University of Houston study found that most of Houston's ozone exceedance is due to transported pollutants from the central and northern US, while local photochemistry contributes to elevated ozone production. The research highlights the importance of reducing emissions at the Houston Ship Channel to mitigate future ozone pollution.
Researchers from Tokyo University of Science have developed a catalyst support based on titanium dioxide powder to facilitate effective CO2 reduction. The study demonstrated increased hydrogen production and enhanced catalytic performance with silver nanoparticles loaded onto the TiO2 surface.
A new Northwestern University-led study finds that electrifying 30% of heavy-duty vehicles in the lower Great Lakes region, including Chicago, would significantly reduce pollution and save hundreds of lives annually. The benefits are largely concentrated in disadvantaged communities, where residents face disproportionate health burdens.
A deep learning approach has unveiled a significant change in the characteristics of global daily precipitation for the first time. The research found that on more than 50% of all days, there was a clear deviation from natural variability in the daily precipitation pattern since 2015.
Researchers developed a water harvester device that harnesses atmospheric water vapor using metal-organic frameworks and ambient sunlight. The device successfully collected up to 285g of water per kilogram of MOF in extreme environments, showcasing its potential for universal applicability.
A team of researchers has determined that microplastic particles are present in the marine atmosphere, even in remote parts of the world. The study found that different types of plastics, including polyester and polyethylene terephthalate, were detected in air samples collected from various sites along the Norwegian coast.
A new technique converts kale waste into phytochemicals for use in health and personal care products, preserving potency and using non-toxic solvents. The method reduces energy consumption and emissions, making it attractive for industry adoption and supporting a circular economy.
A proof-of-concept study reveals that 'forever chemicals' in soil from firefighting foam can be degraded through a simple and cost-effective method called ball milling. This innovative technique has the potential to revolutionize the cleanup of contaminated sites worldwide, addressing a significant environmental concern.
A study analyzed over 100 period products for the presence of per- and polyfluoroalkyl substances (PFAS), a category of compounds linked to negative health outcomes. The researchers found that while PFAS are absent from many products, they may be accidentally or intentionally added to others.
A chemical process used by cooks to create flavors and aromas is believed to have helped create conditions for complex life to evolve on Earth. The Maillard reaction, also known as the browning of food, converts small molecules into larger ones that are harder for microorganisms to break down.
The four-year Bio-LUSH project optimizes biomass value chains and develops green processing methods to extract high-quality fibers from diverse plants. The initiative supports the establishment of a sustainable bio-fibrous economy in Europe by utilizing underexplored biomass feedstocks.
Scientists develop two novel SCAMs with enhanced stability and excellent Fe3+ sensing ability. The materials exhibit a quantum yield of up to 9.7% and exceptional stability in water, making them suitable for environmental monitoring.
Researchers at the University of Missouri have developed a new type of nanoclay material that can be customized to perform specific tasks. This breakthrough could lead to advances in fields such as medical science, environmental science, and more.