Articles tagged with Heavy Metals
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Heavy metals in soil can overestimate real risk to crops, ecosystems, and human health due to low bioavailability. A new review provides a practical framework using tools such as chemical extractants, biological assays, and models to estimate the accessible fraction of metals.
New research reveals that large-scale livestock farming accelerates the spread of antibiotic resistance and heavy metal contamination in agricultural soils. Dried poultry manure, once applied to vegetable plots for food crops, drives a dramatic surge in dangerous antibiotic resistance genes.
A 20-year study of 11,000 adults in Bangladesh found that reducing arsenic levels in drinking water was associated with lower mortality rates from heart disease, cancer, and other chronic illnesses. The study provides the first long-term, individual-level evidence that reducing arsenic exposure may lower mortality even among people exp...
Engineered biochar emerges as a powerful tool to combat water pollution, removing hazardous substances from wastewater. Its tailored surface chemistry and structure make it an ideal candidate for environmental cleanup, capturing both heavy metals and organic contaminants simultaneously.
Researchers used boron isotope fingerprinting to study how boron moves within dissolving glass. They found that diffusion through an altered surface layer becomes a key mechanism controlling the release of boron from glass over time.
A study by University at Buffalo researchers reveals that some elements' semicore electrons can participate in bonding under just a few gigapascals of pressure, far lower than previously thought. This finding challenges traditional notions of core electron behavior and may have implications for our understanding of planetary evolution.
Researchers have developed a promising strategy to tackle soil pollution using element-doped biochar. The approach involves enhancing plain biochar with elements like nitrogen, oxygen, sulfur, and phosphorus to improve its ability to stabilize heavy metals.
Researchers found that combining arbuscular mycorrhizal fungi with biochar can reshape soil microbiomes, reduce cadmium uptake, and improve plant growth. The treatment resulted in up to 320% greater shoot biomass compared to untreated controls.
This study introduces a novel method of synthesizing nitrogen-doped carbon dots using microwave technology from biomass, providing a green and effective approach to metal ion detection. The research offers a clear path to more efficient and environmentally friendly metal ion sensing.
A study by the University of California, Davis found that disposable e-cigarettes release higher amounts of toxic metals than older e-cigarettes and traditional cigarettes. The devices contain hazardous levels of neurotoxic lead, carcinogenic nickel, and antimony, posing significant health risks to users.
A new study reveals that magnetar flares could be a potential source of heavy elements in the universe. By analyzing archival data and observations of magnetar flare events, researchers estimate that up to 10% of heavy elements like gold, uranium, and platinum may come from these cosmic explosions.
Researchers discovered that magnetar flares can produce the universe's heaviest elements, including gold and platinum. The discovery resolves a decades-long mystery concerning a bright flash of light and particles spotted by a space telescope in 2004.
Researchers at Lund University found that hedgehogs collected from urban areas in Sweden contained high concentrations of lead, pesticides, and other pollutants. The study provides an environmental fingerprint of urban ecosystems, highlighting the need for increased monitoring and reduced use of synthetic materials.
Scientists at NTU Singapore have developed a solar-powered method to transform sewage sludge into green hydrogen and single-cell protein, reducing environmental damage and creating renewable energy and sustainable food. The three-step process recovers 91.4% of organic carbon and converts 63% into single-cell protein without producing h...
Researchers at Lawrence Berkeley National Laboratory have discovered the first organometallic molecule containing berkelium, a highly radioactive element. The discovery reveals that berkelium exhibits a unique tetravalent oxidation state, challenging traditional understanding of its behavior in the periodic table.
Researchers Garett Sansom and Lindsay Sansom will evaluate soil conditions in Settegast and Lakewood neighborhoods for cancer-causing heavy metals and polycyclic aromatic hydrocarbons. The project aims to identify residents' environment-related concerns and develop a better understanding of local priorities and challenges.
Researchers at Curtin University have developed a new type of quantum dot that matches or outperforms traditional cadmium-based QLEDs in terms of efficiency and color accuracy. The breakthrough technology emits pure and vibrant blue light with an impressive 24.7% efficiency, lasting nearly 30,000 hours.
Researchers found that brewing tea can adsorb significant amounts of toxic heavy metals like lead and cadmium from drinking water. The study revealed that steeping time played the most significant role in removing metal ions, with longer steeping times resulting in more effective filtering.
A recent Lancet article revealed that durvalumab combined with radiation therapy offers no benefits for patients with head and neck cancer who cannot receive cisplatin. However, a new clinical trial is underway to test the use of a heavy metal to enhance radiation therapy, providing potential new options for these patients.
A study by Texas A&M University has revealed high levels of lead, barium, and chromium in soil samples from the Greater Fifth Ward neighborhood. The findings highlight the need for environmental protection programs to address health risks associated with heavy metal exposure.
Researchers found that wildfire suppressant products can contribute to elevated metal levels in the environment. The study tested 14 fire suppression products and found that they contained at least one metal exceeding EPA's Maximum Contaminant Level regulations for drinking water.
Research shows nanomaterials can blunt heavy metal contamination's effects while increasing crop yields and nutrient content. Nanonutrients reduce pollution's impact by 38%, enhancing soil fertility, leading to improved crops.
Climate change is releasing more contaminants into the ocean, affecting marine ecosystems. Human activities and natural sources are mobilizing and increasing contaminant flows due to rising sea levels and melting glaciers.
A Spanish-German team has shown that the ferromagnetic element cobalt significantly enhances spin textures in graphene-iridium hybrids. The samples were grown on insulating substrates, which is a necessary prerequisite for multifunctional spintronic devices exploiting these effects.
The Indian Institute of Science team proposes an on-site alternative using iron nanoparticles that can remediate heavy metals. The S-CMC-nZVI material showed nearly 99% efficiency at Cr6+ removal under different conditions.
A new filtration material developed by MIT researchers uses natural silk and cellulose to remove persistent chemicals, including PFAS and heavy metals. The material's antimicrobial properties help keep filters clean, providing a nature-based solution to water contamination.
A team of researchers used spectroscopic techniques to detect toxic metals in Victorian-era book covers, finding some volumes contain high levels of lead and chromium that could pose a health risk. The study aims to raise awareness about safe handling and conservation of these books among librarians and collectors.
A study found high levels of lead, cadmium, and arsenic in US cocoa products, including organic options. Moderate consumption is advised, especially for those with higher exposure risks.
A German-Japanese research team developed a polymer inspired by a protein found in plants to selectively remove harmful heavy-metal ions from water. The polymer achieves high specificity and efficiency, making it a promising solution for improving water treatment processes.
A recent analysis of six species of seaweeds found in Hawaii reveals that they are rich in essential minerals and nutrients, yet may also contain unsafe levels of heavy metals. The study highlights the need for regulation and informed cooking practices to ensure nutritious and safe seaweed products.
Researchers discovered toxic metal particles in unused cannabis vape liquids, with lead levels 100 times higher than acceptable limits. The contamination was linked to device production, not heating, and highlights the need for regulation and improved testing procedures.
A Washington State University-led research team discovered a set of genes in wild bacteria that allow them to survive exposure to nickel, enabling them to thrive in toxic soils. The genetic discovery could inform future bioremediation efforts to return plants to polluted soils.
Researchers analyzed tissue and fecal samples from 90 stranded marine mammals to study the distribution of toxic elements. The study found that Risso's dolphins and short-finned pilot whales had high concentrations of mercury, cadmium, and lead, while dwarf sperm whales had low levels.
Parents who received nutritional epigenetics education reduced ultra-processed food consumption and increased whole organic foods intake, leading to improved behavior and cognition in their children. The education intervention also reduced heavy metal exposures and dietary deficits that disrupt gene function.
Middle-aged women exposed to toxic metals have fewer eggs in their ovaries as they approach menopause, according to a new study. The researchers found that higher levels of heavy metals such as arsenic and cadmium are associated with lower Anti-Müllerian hormone levels, indicating diminished ovarian reserve.
Scientists have engineered a non-magnetic material called tantalum silicide to achieve efficient spin Hall effect at high temperatures through Berry phase monopole engineering. This breakthrough could lead to the development of ultrafast, low-power and high-temperature spintronic devices.
Two studies found moderate to high risk scores for cancers and non-cancer health effects associated with lead, arsenic, and cadmium exposure. Exposure to these heavy metals through contaminated food is linked to increased risks of various types of cancer, including lung, bladder, skin, and prostate cancers.
Researchers found that pollutants in green sea turtle eggs can feminize broods, increasing the risk of extinction due to a lack of males. The study suggests that climate change and pollution may be driving this trend, which could have severe consequences for the species' survival.
Scientists at NTU Singapore have developed a flexible, human cornea-thin battery that can store electricity from saline solution. The battery could power smart contact lenses with displays and augmented reality capabilities.
A new study led by Wayne State University aims to discover gene-heavy metal interactions in human livers that contribute to nonalcoholic fatty liver disease (NAFLD). The research, funded by the National Institute of Environmental Health Sciences, will investigate how naturally accumulated metals interact with the liver genome.
A team of researchers has developed a new screening method to identify defective sensors, enabling the mass production of reliable graphene sensors for detecting toxins in water. The sensors can detect multiple contaminants simultaneously and provide early warning for contamination.
Researchers in Peru found that the majority of cacao can meet EU cadmium limits, but areas like Piura face significant challenges due to high levels of cadmium in their soils. The study provides an interactive map predicting cadmium levels across the country.
A recent study from the University of Helsinki found that fish mercury concentrations are highest in winter and near spring spawning, but lowest in autumn after the growing season. This seasonal pattern is linked to changes in fish metabolism and food availability during colder months.
Scientists at Chalmers University of Technology have created a new method for removing mercury from concentrated sulphuric acid, reducing levels by more than 90%. This innovation could lead to reduced mercury emissions and the production of high-purity, non-toxic products in industries such as mining and metal refining.
Researchers at Penn State found a significant association between salivary cotinine and heavy metals such as copper, zinc, lead, in children exposed to tobacco smoke. The study suggests that environmental tobacco smoke exposure may be a source of increased children's exposure to heavy metals.
A team of engineers at RMIT University has developed a novel approach to recover heavy metals, including copper and zinc, from treated sewage sludge. The innovation enables the recycling of acidic liquid waste, reducing environmental harm and retaining nutrients for land applications.
Researchers discovered a probiotic that can convert toxic mercury into less harmful forms, reducing neurological damage and improving iron absorption. The probiotic uses genes from a resistant bacteria to detoxify methylmercury, a neurotoxin found in fish-based diets.
Researchers at Northwestern University developed a metal-filtering sponge that can capture and recover critical metals and heavy-metal pollutants from contaminated water. The new sponge successfully removed lead to below detectable levels with one use and recovered over 90% of the ions during subsequent cycles.
Rice University scientists developed a rapid process to remove heavy metals from coal fly ash using flash Joule heating. This purified coal fly ash can be used in infrastructure projects, reducing emissions by 30% and improving concrete strength and elasticity.
Decades of wars and conflict in Iraq have led to a catastrophic rise in antibiotic resistance due to destroyed healthcare infrastructure, medicine shortages, and high levels of heavy metal contamination. Research is urgently needed to understand the link between armed conflict and AMR to prevent millions of needless deaths.
Researchers at the University of São Paulo developed a portable, flexible copper sensor that can detect heavy metals like lead and cadmium in sweat. The device is made from ordinary materials and is simple to produce, making it accessible for non-specialists and technicians.
Researchers at Washington University in St. Louis found that nanoplastics from polystyrene can produce reactive oxygen species when exposed to light, which can harm wildlife and the aquatic ecosystem. The study suggests that smaller particle sizes of nanoplastics may be more reactive and decompose faster under light.
A new study finds that areas with high levels of arsenic contamination in drinking water have a higher prevalence of antibiotic-resistant Escherichia coli in both water and child stool samples. The study highlights the potential for environmental drivers like arsenic to contribute to antimicrobial resistance.
New research reveals mangroves can withstand heavy metal contamination without adverse health impacts. Grey mangroves were found to tolerate high lead and zinc levels in contaminated sediment, highlighting their role in stabilising polluted regions.
A recent study published in Science of The Total Environment found that many household wells in Nevada are contaminated with heavy metals such as arsenic, which can cause adverse health effects. The study suggests that frequent testing and improved treatment systems are necessary to ensure safe drinking water for rural communities.
Researchers at Drexel University have developed a new MXene material that can efficiently remove mercury from contaminated water. The carboxylated titanium carbide MXene has shown superior performance in removing mercury ions compared to existing adsorbents, with the ability to capture 95% of mercury ions within one minute.
Scientists have created a membrane made from a waste by-product of vegetable oil manufacturing that can filter out heavy metals from contaminated water. The membrane uses proteins derived from peanut or sunflower oil production to attract and trap heavy metal ions, purifying water to international drinking standards.
Elevated heavy metal levels in rivers can lead to higher antibiotic resistance levels, according to research by Newcastle University and the Indian Institute of Technology, Delhi. The study found that metal pollution increases antibiotic resistance gene abundances, affecting resident bacteria.
Researchers found that maintaining hard water reduces zinc accumulation and oxidative stress in goldfish, mitigating toxic effects. This study provides an eco-friendly approach to address aquatic ecosystem pollution caused by heavy metal contamination.
Researchers at Ural Federal University improved the composition of borate glasses by adding heavy metal oxides, significantly increasing their density. The new glass samples showed good results as radiation shielding material in low and medium energy gamma radiation.