Articles tagged with Analytical Chemistry
A UC Riverside-led study finds nearly half of domestic well water users in the Central Valley live in disadvantaged communities with high manganese contamination rates. The highest concentrations are found in private, untreated well water systems, posing health risks to fetuses and children.
The oxygen-ion battery has an extremely long service life due to its ability to regenerate and store capacity that does not decrease over time. It also solves the problem of fire hazards associated with lithium-ion batteries.
Researchers have overcome the low reactivity of biobased secondary diols in polyester synthesis by incorporating an aryl alcohol. This leads to high molecular weight materials with improved mechanical- and thermal properties, outperforming existing plastics like PET.
A new law restricts 1,4-dioxane levels in household cleaners and cosmetics, a potential human carcinogen common in everyday products. Experts recommend robust analytical methods for detection and quantification to meet regulatory requirements.
Researchers at the University of Amsterdam's Van 't Hoff Institute for Molecular Synthesis have developed a biocatalytic method to synthesize primary, secondary, and tertiary amines containing two stereogenic centers. The method uses a one-pot enzyme cascade, achieving excellent stereoselectivity and high chemical purity.
MU researchers, including Jay J. Thelen and Dong Xu, are exploring genetic modification to increase seed oil production in camelina and pennycress for biofuel use in the aviation industry. The team aims to create a sustainable 'green energy' source as an alternative to petroleum-based fossil fuels.
Researchers used infrared scattering-type scanning near field microscopy to analyze two Stradivari violins, finding a protein-based layer between the wood and varnish. This discovery could help replicate historic instruments in modern times.
Researchers at Osaka University have developed a method to enhance DNA detection in nanopores, slowing down transit and increasing signal intensity. The use of glycerol instead of water enables the detection of single DNA molecules, paving the way for faster and more affordable genomic sequencing.
A new mid-infrared sensor chip can accurately monitor liquid concentrations in real-time, enabling precise monitoring of chemical reactions. The sensor combines customized infrared technology and chemical robustness to deliver data within fractions of a second.
A study published in Environmental Science & Technology Letters found a spike in acetaminophen concentrations in wastewater preceded a surge in COVID-19 cases. The detection of pharmaceuticals could complement existing efforts to monitor viral RNA, providing a more comprehensive understanding of disease outbreaks.
Researchers developed a method for detecting cancer miRNA patterns using DNA computing technology, enabling simple and early cancer diagnosis from liquid biopsies. The technology uses nanopore decoding to recognize cancer-specific expression patterns even at extremely low concentrations of miRNA.
Researchers analyzed food-grade nylon bags and single-use beverage cups, finding that they release trillions of nanoparticles per liter when exposed to hot water. The average size of these nanoparticles was between 30-80 nanometers, with concentrations seven times higher from nylon bags than from beverage cups.
A new study led by Phil Crews at UC Santa Cruz identifies a method to measure smoke-derived compounds directly, providing practical guidelines for winemakers. The analysis of over 200 samples found that two biomarkers were not useful and recommended replacing them with different ones.
Researchers at the University of Copenhagen found hundreds of chemical substances in tap water stored in reusable plastic bottles, including some potentially harmful to human health. The study revealed that machine washing and dishwasher use can increase the leaching of toxic substances from the plastic.
A team of scientists has discovered a range of metal carboxylates, known as 'metal soaps', that form in oil paintings and cause damage over time. These compounds are often composed of zinc and lead pigments, but other metals like aluminum and calcium can also be present.
Researchers have created a new, simpler way to fabricate SERS nanostructures with superior stability and performance at low cost. By using a heat-resistant polymer called polyimide (PI), they can produce nanosurfaces with nanopillars that enhance signal intensity for efficient chemical detection. The new fabrication method has the pote...
A research team at the Beckman Institute for Advanced Science and Technology developed a chemical process to mimic trees' vascular systems in foamed polymers, adding structure and enabling directional fluid transport. The team discovered that increasing or decreasing gelation time enables direct control over the foam's cellular structure.
Researchers have developed a highly sensitive immuno-CRISPR assay to detect acute kidney rejection in urine, potentially allowing for early diagnosis without invasive biopsy. The test uses CRISPR/Cas12a gene editing technology to identify biomarkers of rejection, such as CXCL9, with improved sensitivity compared to existing methods.
Researchers at Martin Luther University Halle-Wittenberg developed a rapid and precise method to analyze CBD oils, detecting both CBD and tetrahydrocannabinol (THC) with high accuracy. Twelve out of twelve tested samples contained about as much or slightly more CBD than indicated on their packaging.
Researchers in Japan have designed the first de novo-designed peptides that can form artificial nanopores to identify and enable single molecule-sorting of genetic material in a lipid membrane. The peptides can detect specific molecules, including DNA, and have the potential to mimic natural proteins' ability to detect specific proteins.
Researchers emphasize the need for monitoring drinking water for HIV medications, as they can contaminate rivers and streams through wastewater. The lack of regulation on pharmaceuticals in wastewater treatment plants poses a significant challenge in ensuring safe drinking water.
Peng Li, an assistant professor at West Virginia University, has received the 2021 Young Investigator Award from Eli Lilly for his groundbreaking research on acoustic waves and microfluidic devices. His innovation, VSSI technology, offers improved performance, smaller size, and lower cost compared to commercial products.
A new technology uses compressed coal blocks to purify seawater and produce fresh water, potentially benefiting millions of people worldwide. The system is powered by sunlight and can produce enough water for a family of four, making it a viable solution for economic water shortages.
Scientists at Kanazawa University have discovered a new method for determining the chirality of amines, which involves reactions with 'color indicator' molecules that produce different colors depending on the enantiomer present. The approach enables easy naked-eye differentiation between enantiomers and could be used to quantify enanti...
Scientists have synthesized brand-new transition metal carbonyl complexes, including Ta2(CO)12 and M(CO)7+, which transcend new chemical frontiers. These substances go beyond current compound limits, offering new possibilities for practical use and basic science research.
A University of Córdoba research group has developed a method to detect pollutants in seawater at very low concentrations, focusing on parabens and triclosan used as preservatives in personal hygiene products. The new system, Lab-on-Valve, uses carbon-coated titanium dioxide nanotubes for efficient detection.
Researchers at Universidad Complutense de Madrid developed a biosensor that can detect adulterated horse meat in beef within 1 hour, using mitochondrial DNA fragments. This technology offers improved selectivity and reliability compared to existing methods.
The European Union is funding a research structure concept called ELYSION to advance electroconversion and electroactive materials in Mainz. The lab will focus on sustainable methods of synthesizing materials and chemical compounds using electricity as a catalyst.
Scientists have developed a simple thermometer-like device to detect troponin levels in blood, which can help diagnose heart attacks. The device uses nanoparticles, ink, and a glass vial to measure the protein's concentration, making it accessible for point-of-care use in low-income areas.
Researchers at the UPV/EHU and Tecnalia have developed an innovative method using iron nanoparticles to degrade lindane, a toxic insecticide banned by farmers. The study confirms the high reactive capacity of iron nanoparticles to break down lindane, revealing reaction tendencies and speeds over time.
Scientists have developed a reliable method for verifying the authenticity of rare stamps using infrared spectroscopy, which detected two counterfeits. The new technique allows for non-destructive testing and can be applied to various stamp components, providing a more comprehensive approach.
Kevin Schug, a UT Arlington associate professor, will be recognized for his outstanding contributions to analytical chemistry with the American Chemical Society Division of Analytical Chemistry Award for Young Investigators in Separation Science. His work focuses on developing increased throughput mass spectrometry methods and ultra-tr...
A new paper-based device can detect airborne metal exposure almost immediately, potentially preventing illnesses in millions of metal workers. The device accurately determines iron, nickel, and copper levels in air samples, providing a chance for workers to leave hazardous areas before it's too late.
The Metabolomips group has developed a methodology for detecting gunshot residues, which can produce reliable analyses within an hour. They have also created a method to identify antipsychotic drugs in the human brain, with potential applications in forensic analysis and post-mortem diagnostic tests.
Scientists create technique for tagging objects and substances using stable isotopes, enabling detection of explosives and tracking wild fish and farm-raised trout. The method has potential applications in preventing fraud, counterfeiting, and monitoring populations.
A new test, 'impurity profiling,' identifies impurities in nerve gas samples at crime scenes and matches them to source chemicals, pinpointing likely sources. This technique may help track down perpetrators of chemical attacks.
The new 'dipstick' test uses a special paper strip with antibodies to accurately determine blood type, promising to save millions of lives through successful blood transfusions. The cost-effective method could be particularly useful in veterinary medicine for typing animals' blood in the field.
Scientists developed a nondestructive 'sniff' test that analyzes gases emitted from old books and documents, identifying 15 VOCs as markers for paper degradation. This method preserves prized paper-based objects without destroying them.
Scientists at Albert Einstein College of Medicine have developed a simple and accurate test to detect and quantify ricin, an extremely potent toxin. The assay detects small amounts of ricin more accurately and faster than ever before, paving the way for discovering drugs that could serve as antidotes.
The Chemical Heritage Foundation will present Leroy Hood with the seventh annual Pittcon Heritage Award for his contributions to instrumental chemistry and genomics. The award recognizes Hood's pioneering work in developing key instruments for modern molecular biology, including the DNA sequencer.
Los Alamos scientists have developed a new method to produce high-purity plutonium sources, which will be used as primary analytical chemistry standards. The new extrusion method produces 99.99% pure plutonium with minimal contaminants and surface oxidation.
A Pacific Northwest chemist has developed increasingly selective methods to separate and analyze biological mixtures using capillary liquid chromatography and mass spectrometry. The techniques enable researchers to predict the effect of complex perturbations on biological systems, such as drug side effects and virus exposure.
Kathryn Hach-Darrow, a renowned entrepreneur and industry leader, will receive the Pittcon Heritage Award at CHF's annual conference. She pioneered the growth of the Hach Company into a global firm focused on water analysis and testing.
David Nelson, pioneer of chromatography data systems, recognized for promoting public understanding of analytical chemistry and its role in world economies. His work demonstrated the benefits of personal computers in analytical chemistry, benefiting forensic science, pharmaceutical drug discovery, and environmental remediation.