Articles tagged with Heavy Metals
A new hybrid filter membrane has been developed to remove heavy metals from water, including industrially relevant elements like lead and mercury. The membrane's efficiency is high, with over 99% of toxic substances bound in just a single pass.
A recent study by high school student Gleb Rukhovich reveals that autocatalysts in modern cars can break down, releasing toxic heavy metals into the environment. The study found that contact with water facilitates the aggregation of platinum and palladium salts into clusters, which exhibit higher toxicity than simple salts.
The study found that mercury affects the bright yellow hues on the great tit's breast, making males less attractive to females. Copper increases the size of the bird's 'black tie', while chrome reduces its area, impacting dominance and aggression.
Researchers developed a new material that mimics the structure of coral, a natural adsorbent of heavy metals, and found it could remove around 2.5 times more mercury from water than traditional aluminium oxide nanoparticles. The synthetic coral-like material has potential applications in environmental remediation.
A new study found that certain pollutants penetrate further into the feto-maternal system, causing harm to fetuses. The research analyzed pollutant levels in cord blood and maternal tissues, revealing heavy metals like mercury and lead easily pass through the placental barrier.
A study found that Griffon vultures in Catalonia have high levels of lead in their tissues, affecting their immune systems and reproductive function. The birds' diet, which mainly consists of carrion from domestic and wild hunting species, increases their likelihood of ingesting lead.
A recent study by Graduate Student Aubrey Hillman found that ancient copper and silver production in southwest China produced tremendous quantities of harmful heavy metals, including lead, silver, zinc, and cadmium. The pollution levels were three to four times higher than those generated by modern metallurgical methods.
Research published in BMC Public Health found that shisha pipes remove only a minimal amount of heavy metals from tobacco smoke. The study analyzed four popular brands of shisha tobacco and found that the levels of heavy metals in smoke were significantly higher than in water, with uranium being the most abundant metal present.
A new method enhances direct methanol fuel cell efficiency by removing toxic heavy metal ions like Cr(VI) while converting to less toxic Cr(III). This allows for improved performance and increased power density.
A new study finds that higher human exposure to cadmium can lead to significantly shorter telomeres, associated with cardiovascular disease and other diseases of old age. Cadmium exposure has been linked to premature aging of cells, kidney disease, and other health problems.
Researchers found lower concentrations of lead and other heavy metals in moss samples from the oil sands area, contrary to current scientific knowledge. The study, published in Environmental Science and Technology, suggests that other factors may be affecting lead pollution levels.
Research at Uppsala University finds that plasmids with genes for resistance can be enriched by very low levels of antibiotics and heavy metals, suggesting environmental contamination contributes to the problem. This highlights the need to reduce antibiotic use and minimize exposure to heavy metals.
Researchers found that cilantro effectively removes lead and other harmful metals from contaminated water. The study suggests that cilantro could be used as a low-cost, sustainable filter for developing countries.
A recent study by Johns Hopkins scientists reveals an association between elevated cadmium levels and increased risk of liver disease in men. Higher levels of cadmium in urine were found to be nearly 3.5 times more likely to lead to liver-related deaths compared to lower levels.
Researchers found that kieselguhr, a common filtering material in beer production, releases arsenic into the beverage. The levels of arsenic are considered low and unlikely to cause illness, but the study highlights the need for breweries to take precautions when using this substance.
Researchers have found that onion and garlic waste can effectively remove heavy metals like lead, arsenic, and cadmium from contaminated materials. The optimal conditions for this process include a pH of 5 and contact time of half an hour at 50 degrees Celsius.
Researchers developed a nanoparticle system that can detect even the smallest levels of heavy metals in water and fish, offering an inexpensive alternative to existing cumbersome techniques. The device is capable of measuring low concentrations of mercury, a toxic metal that can accumulate in predatory fish and harm human health.
Researchers have identified genes that can be used to select low-cadmium accumulating crop varieties, offering a potential solution to reducing toxic levels in food. By understanding the mechanisms of Cd uptake in plants, scientists aim to develop targeted breeding strategies for crops like rice, wheat, and potatoes.
Researchers found that three earthworm species can remove up to 75% of heavy metals from waste, producing rich compost without accumulating toxins in crops. The worms' digestive system facilitates the separation of metal ions, allowing for safe disposal of organic waste.
The cyclic electrowinning/precipitation (CEP) system removes heavy metals from water by increasing their concentration, making it possible for a proven metal-removal technique to take over. The automated CEP system can remove up to 99% of copper, cadmium, and nickel, returning the contaminated water to federally accepted standards.
Scientists have found that minced banana peels can quickly remove toxic metals like lead and copper from river water. The banana peel purification apparatus can be reused up to 11 times without losing its effectiveness, making it a promising alternative to traditional methods.
A study published in Interdisciplinary Environmental Review reveals high levels of toxic heavy metals in Jail Talav and Kalwa Lakes, posing a risk to drinking water and crop irrigation. Regular monitoring is crucial for the well-being of the surrounding population.
The University of Cincinnati has developed a lab-on-a-chip sensor that can detect highly electronegative heavy metals like manganese in human blood serum in just ten minutes. This sensor is environmentally friendly and child-friendly, making it an attractive option for clinical, occupational, and research settings.
A research team led by Edward Yu has discovered the crystal structures of pumps that remove heavy metal toxins from bacteria, allowing them to resist antibiotics. This finding provides a better understanding of bacterial resistance and could help drug researchers develop treatments to combat it.
Researchers create new nano-material using biomaterial involved in Alzheimer's disease research, resulting in environmentally friendly LED lights. The technology also enables medical equipment to be more sensitive and generates strong signals for other applications.
Researchers have developed a method to remove contaminants from stormwater runoff using 'filter socks' containing compost. The socks captured silt, heavy metals, fertilizers, and petroleum products, reducing levels by up to 99%. Adding flocculation agents improved performance, removing nearly all pollutants and sediment.
Researchers have discovered that high levels of lead can slow the progression of amyotrophic lateral sclerosis (ALS), a neurodegenerative disease. This finding suggests that lead may activate a novel pathway able to reduce neuroinflammation and slow neurodegeneration in ALS patients.
Researchers found significant differences in heavy metal accumulation depending on mushroom species, with Chanterelles having high levels of lead and neodymium. The study suggests that the type of substrate plays a crucial role in metal accumulation, highlighting the need for further research into edible mushrooms
Research finds extreme bacteria dominating areas with high levels of heavy metals, potentially changing pollutants into more toxic forms that can leak into reservoirs. Bacterial diversity shifts could affect the delicate ecosystem balance and impact plant and animal health.
A new portable detection system developed by PNNL can accurately detect toxic lead and other heavy metals in blood, urine, and saliva samples. The device is field-deployable, battery-operated, and provides quicker results than current state-of-the-art mass spectrometry systems.
A pilot study found significant correlations between copper and lead levels in sheep wool and local streams, suggesting that sheep wool can be a reliable bio-indicator of naturally occurring heavy metal concentrations. The study also revealed sex-specific differences in the accumulation of lead and copper in male sheep.
A team of researchers from Arizona State University and Motorola Labs developed sensors based on single-walled carbon nanotubes that can detect heavy metal ions in water at parts per trillion levels. The devices use peptides to recognize specific compounds, allowing for selective detection of toxic chemicals.
A new study found that Sydney harbor's seaweeds contain high levels of toxic heavy metals, harming small animals that eat them. Up to three-quarters of juvenile crustaceans are killed when exposed to copper, highlighting the potential consequences for marine food chains.
Researchers at Northern Arizona University have made groundbreaking discoveries about uranium's impact on DNA, potentially shedding light on environmental contamination and health effects of depleted uranium. The study's findings have significant implications for Native American communities and may help address long-standing concerns a...
A new study by UC researchers identifies the Slc39a8 gene as a key player in transporting toxic heavy metals like cadmium, which can cause tissue death and damage. The discovery has significant implications for understanding how nonessential heavy metals contribute to cancer and other diseases.
A study found that 20% of Ayurvedic herbal medicine products sold in Boston-area stores contained lead, mercury, and/or arsenic, exceeding regulatory standards. The products were often recommended for children, raising public health concerns.
Scientists discover new mineral that absorbs toxic metals like a sponge, revealing hidden reservoirs of lead, arsenic, and copper. The findings shed light on the migration patterns of these pollutants and could inform efforts to clean up contaminated sites.
Researchers from the Collaborative Mercury Research Network (COMERN) are conducting a unique experiment to test whether old-fashioned tea can prevent mercury absorption. In this study, participants will eat local Lake Winnipeg fish with or without black tea for three days, and provide blood samples to track mercury levels.
Researchers at UCSD have discovered a chemical that allows plants to transport phytochelatins from roots to stems and leaves, enabling them to detoxify heavy metals like lead, arsenic, and cadmium. This finding brings bioremediation, using plants to clean up contaminated soil, closer to reality.
Researchers have rediscovered a World War II era antidote for Lewisite, a chemical warfare agent that causes immediate pain and blistering. The treatment, BAL, can remove heavy metals such as arsenic, copper, and lead from the human body.
Biologists at the University of Pennsylvania have discovered a biochemical pathway in animals responsible for detoxification of heavy metals. The discovery establishes a firm basis for determining its ubiquity in other animals and clarifies how animals eliminate, sequester and metabolize heavy metals.
The International Conference on Heavy Metals in the Environment will discuss successes and failures of research on human exposure to toxic metals. Major themes include risk assessment, environmental epidemiology, and human health effects, with a focus on protecting children from toxic metals.
Heavy metal contamination was found in northern Mexico's residential areas near smelters and refineries, exceeding maximum acceptable levels for cleanup. The contamination poses serious health risks to children and adults, including lead exposure, neurological damage, and increased cancer risk.