Articles tagged with Chemical Analysis
A scanning transmission X-ray microscope for lithium analysis has been developed, enabling the study of chemical states and behaviors with high spatial resolution. The microscope uses a low-pass filtering zone plate to suppress higher-order harmonics, allowing for accurate measurement of XAS spectra.
Researchers have discovered a new electrocatalyst, Hf2B2Ir5, that exhibits high activity in the oxygen evolution reaction during water electrolysis. The material's cage-like crystal structure and cooperative phases enable stable and efficient performance over long periods.
Researchers at Samara Polytech develop cost-effective, portable analyzers for quick analysis of objects under study. The devices require no sampling and use light to illuminate the object, detecting signals through a light-guide cable.
Researchers examined whether individuals are using cannabidiol (CBD) for diagnosable conditions with evidence-based therapies. The study found that many users were seeking alternative treatments, highlighting the need for more research on CBD's efficacy and safety.
A new on-site detection method for PFAS, developed by Curtin University researchers, allows for immediate and accurate measurement of levels. This method could aid in the removal of persistent environmental pollutants from contaminated lands and waters around the world.
A study has discovered that unglazed ceramic cookware can retain the residue of not just the last meal cooked, but potentially earlier dishes, allowing for the reconstruction of ancient recipes. The research team analyzed chemical compounds adhering to and absorbed by the earthenware in which they were prepared.
A new scientific method has been approved for measuring flavanols and procyanidins in cocoa powders, cocoa liquors, chocolates, and cocoa extracts. The method, developed by Mars Edge, employs hydrophilic interaction liquid chromatography and enables consistent product labeling.
Researchers developed a custom smartwatch that analyzes sweat to track medication levels in real-time. This wearable technology can help personalize treatment approaches by tailoring ideal drugs and dosages to individual needs.
Most of Stonehenge's sarsen megaliths originate from West Woods, Wiltshire, according to a new analysis. The study used advanced techniques to determine the stones' chemical composition, revealing a common origin for the massive boulders.
Researchers at Yale University have discovered a novel approach to finding biological signals in ancient fossils, providing insights into major evolutionary questions. The study has already revealed valuable information about the soft shells that encased early dinosaur eggs and identified an ancient creature known as the Tully Monster.
Researchers developed a platform for rapid chiral analysis, producing chromatogram-like output without separation. The method effectively resolved a wide range of chiral molecules, including pharmaceuticals and biomolecules.
Researchers developed a new quantum sensing technique that allows high-resolution NMR spectroscopy on small molecules in dilute solution, achieving femtomole molecular sensitivity. This breakthrough enables chemical analysis and magnetic resonance imaging at the level of individual biological cells.
A study by UC Davis researchers found that at least 82% of commercial avocado oil samples were either stale or mixed with other oils. The lack of standards in the industry puts consumers at risk, but experts are working to establish regulations and ensure quality.
A KAUST research team discovered that IQOS emits 62 compounds, 52 of which were not found in Philip Morris International tests, including diacetyl and potentially carcinogenic diethylhexyl phthalate.
Researchers have identified the largest and hottest shield volcano on Earth as Pūhāhonu, which is nearly twice as big as Mauna Loa. The study reveals that hotspots can undergo pulses of melt production, rewriting the textbooks on mantle plumes.
The University of Texas at Arlington is collaborating with the city of Coppell to inspect sewer pipelines using robotic technology and machine learning. The project aims to predict the remaining service life of the pipelines, utilizing advanced analysis techniques such as Energy-Dispersive X-ray spectroscopy.
Scientists at Newcastle University have developed a new method to grow crystals of organic soluble molecules from nanoscale droplets, allowing for rapid screening of hundreds of experiments in minutes. This breakthrough could transform the analysis of small molecules and accelerate the discovery of new pharmaceutical agents.
A new study analyzes human bones from medieval cemeteries to shed light on ancient copper cookware. Researchers found that people consumed tiny portions of copper daily, with cities like Ribe using copper pots for 1000 years.
Scientists combine dual-comb spectroscopy with video-rate imaging to create detailed hyperspectral images. The new approach enables rapid acquisition of spectral information for entire scenes, advancing applications in chemical analysis, biomedical sensing and more.
High-resolution mass spectrometry coupled with bioanalytical tools can characterize complex chemical mixtures and capture mixture effects in environmental samples. The CITEPro technology platform is a key tool in this approach, enabling the profiling of the exposome and elucidating drivers of chemical stress.
A study published in PLOS ONE reveals that prehistoric Italian communities traded copper across complex networks, with most coming from Tuscany. Non-Tuscan copper was also a significant import to the region, contributing to a growing picture of independent metal exchange networks.
A new AI model predicts physicochemical properties of compounds by analyzing fundamental chemical laws, enhancing the precision of medication and material design. The model uses neural networks to forecast chemical reaction parameters.
Researchers created a neural network that analyzes fundamental chemical laws to predict tautomerism constants and acidity. The model enhances the accuracy of physicochemical property predictions for designed medications and materials.
The Pachacamac Idol, a sacred icon worshipped for nearly 700 years, was symbolically painted with red, yellow, and white colors using cinnabar pigment. The study confirms the idol's polychromatic design and sheds light on pre-Columbian cultural practices in South America.
Scientists analyzed fossilized clam shells to reconstruct ancient cooking habits in Puerto Rico, finding that clams were cooked at temperatures between 100°C and 200°C. The results suggest that barbeque was a common method of cooking, unlike boiling, which may not have been widespread due to the lack of ceramic pottery technology.
Scientists have developed a new high-performance optical cavity for terahertz frequencies, increasing the sensitivity of spectroscopic gas analysis. The new technology enables detection of biomarkers in breath and complex gas mixtures found in industrial emissions.
Birch bark tar was the world's oldest glue, used in the Palaeolithic Period and up to late antiquity, according to recent research. Archaeological artefacts suggest it was procured despite birch scarcity, highlighting the strength of traditional practices among the Gauls.
Researchers discovered a Neandertal-made tar-backed tool from the North Sea, revealing the use of complex technology by Neandertals. The tool, dated to approximately 50,000 years old, suggests a considerable investment of resources in its production and maintenance.
Researchers at Kobe University have identified the chemical makeup of newborn babies' head odors, shedding light on their importance in mother-baby recognition. The study found that these odors can be used to distinguish between individual babies and are stronger in the first few days after birth.
Researchers have designed a nanowire spectrometer that can directly image single cells and analyze chemical fingerprints without the need for microscopes or bulky equipment. This breakthrough could lead to new generations of ultra-compact spectrometers with applications in biology, lab-on-a-chip systems, and smart wearables.
Researchers at the University of Copenhagen have developed a new method for analyzing gas chromatographic data using deep learning, allowing for faster and more accurate results. This technology has the potential to improve food quality control, detect food fraud, and enhance patient care by analyzing blood samples.
Researchers develop a technique called dimensional stacking to improve data analysis for materials scientists. By organizing data based on physical and chemical properties, machines can gain insights into complex materials like ferroelectrics. This approach shows that human experience still has a role in the age of machine intelligence.
Scientists at the University of Warwick developed a new method, OCULAR, that assigns a record-breaking 244,779 molecular compositions within a single sample of petroleum. The technique combines experimental and data processing techniques to characterise complex samples, enabling analysis across various fields.
A chemist at the University of Texas at Arlington has developed a device that collects and analyzes liquid samples as they travel through space. The open-tubular chromatograph can detect and separate ions using very little power, making it ideal for future Mars missions.
Researchers analyzed ceramic vessels from Mont Lassois to determine ancient Celtic drinking habits. They found that the Celts consumed imported Mediterranean wines and local beers, contradicting the assumption that only elites drank foreign wine.
Scientists have developed a centralized database of all known bovine milk compounds, including over 2,300 previously unknown metabolites. The comprehensive analysis was made possible by combining targeted chemical analyses and digital text-mining tools.
Researchers are developing methods to extract DNA and analyze chemicals from fingerprints, improving identification rates. These techniques involve analyzing molecules like DNA, amino acids, or explosives left behind in fingerprints.
An international team has uncovered fossilized traces of motility in a 2.1 billion-year-old fossil deposit in Gabon, shedding light on the evolution of life on Earth. The discovery provides evidence of sophisticated multicellular organisms that could move through their mud in search of nutrients.
Researchers analyzed impasto layers in three of Rembrandt's paintings and found a rare lead mineral called plumbonacrite, which was not previously known to occur in historic paint layers. The study suggests that Rembrandt used a unique paint recipe.
Researchers at UBC's Okanagan campus have developed a state-of-the-art microfluidic gas detector that can detect small traces of gases quickly and efficiently. The device uses 3D-printed parts to create the microchannel and metal oxide semiconductor, and has potential applications in environmental monitoring, food quality assessments, ...
The review highlights the development of advanced nano-materials for electrochemical geno-sensors, showcasing their high surface area, biocompatibility, non-toxicity, and charge-sensitive conductance. These materials are used to detect chemical analytes with potential as a next-generation field-deployable analytical tool.
Researchers at NIST made measurements of microelectromechanical systems (MEMS) a hundred times faster than before, resolving fine details of transient motions. This breakthrough allows for quicker repetitive testing and assessment of durability in miniature mechanical systems.
Researchers develop NMR analysis to pinpoint hazelnut country of origin, identifying distinct metabolite profiles for specific regions. The new method achieved 96% accuracy and could be combined with existing tests for enhanced reliability.
A study in central Pennsylvania found chemical and isotopic evidence of upward methane migration from the Marcellus shale, suggesting geochemical indicators for distinguishing recent methane contamination. The research also identified geological features facilitating methane migration near hydraulically fractured shale gas wells.
MIT researchers have developed a plug-and-play technology that automates chemical synthesis, allowing chemists to focus on analytical and creative aspects of their research. The system can optimize reactions in a single day, cutting weeks or months of optimization time.
Researchers at RUDN University developed a precise model of intermolecular bonds in diazone dyes, revealing their photochromic properties and importance in stabilizing dye structures. This study can be useful for creating new azo dyes with essential physical and chemical properties.
A new study published in Nature Communications reveals that the British mainland was formed from the collision of three ancient continental land masses: Avalonia, Laurentia, and Armorica. This finding explains the abundance of tin and tungsten in South West England, which is also found in Brittany and other areas of mainland Europe.
Archaeologists have discovered the oldest known abstract drawing made with a piece of ocher used as a pencil, dated to 73,000 years ago. The drawing, found on a silcrete fragment in Blombos Cave in South Africa, confirms that early humans intentionally created and used symbols.
Researchers uncover evidence of prehistoric embalming process in ancient Egyptian mummy dating back to 3700-3500 BC. The 'recipe' contained antibacterial agents used in similar proportions as later Egyptian embalmers, revealing a wider geographical use of these balms.
Recent study analyzes chemical makeup of tools used to create giant statues, suggesting a sophisticated society where people shared information and collaborated. The results contradict the popular narrative that Easter Island's inhabitants ran out of resources and warred themselves into extinction.
A University of Oxford study suggests that some people buried at Stonehenge had moved with and transported bluestones from the Preseli Mountains in west Wales. The research combined radiocarbon-dating with new developments in archaeological analysis to investigate the lives of those buried at the iconic monument.
Researchers from NCBS developed a protocol to analyze odor samples from dung piles of male blackbuck. They found that males with high mating success have richer odors in meta-cresol. This discovery has implications for understanding chemical communication in this species and potentially informing conservation efforts.
Researchers from University of South Florida have identified oleic and linoleic acids in ancient pottery from Sicily, dating back to the Early Bronze Age. The discovery confirms olive oil existed in Italy hundreds of years earlier than previously recorded.
Researchers from Skoltech and MIPT have developed a device for upgrading mass spectrometers, enabling the analysis of one substance from four different perspectives or multiple samples simultaneously. This improves upon conventional mass spectrometers, which analyze one substance at a time.
Researchers create a new method to analyze irregularly shaped 3D objects using mass spectrometry and robotics. The technique, called RoSA-MS, uses a laser scanner to map the sample's surface and direct a sampling probe to collect trace amounts of material for analysis.
Researchers at Kyoto University and University of Tokyo have developed a new method for light detection in nuclear magnetic resonance, promising higher sensitivity for MRI. The 'up-convertion' technology converts radio-frequency signals into optical ones using an elastic membrane and optics.
Scientists at the University of Córdoba have devised a new system to analyse the smell generated during composting using NIR spectroscopy and chemometrics. The method provides a fast and economical means of evaluating odour emission rates, potentially mitigating the odorous impact of composting.
A new, rapid, and low-cost method for detecting bacteria in water or a food sample has been developed by researchers at the University of Massachusetts Amherst. The technique uses a sensitive and reliable bacteria-detecting chip that can test fresh produce for bacterial loads.
A new analytical method developed at GEOMAR Helmholtz Centre for Ocean Research Kiel shows that water penetrates significantly deeper into the Earth's crust than previously assumed. This finding is crucial for understanding the ocean's heat budget and volatiles in the crust.
Researchers develop a new spectrometer to analyze single living cells in situ, providing mechanical and chemical maps of the system. The study reveals that oncogene expression causes significant softening in cells, making them more invasive.