Articles tagged with Chemical Analysis
A cross-sectional study found that children exposed to secondhand cannabis smoke at home have significantly higher urinary cannabinoid biomarker levels, indicating increased exposure to toxic and carcinogenic chemicals. Reducing in-home cannabis smoking can substantially reduce child exposure to these harmful substances.
A comprehensive bibliometric analysis reveals a steady increase in global research on hydrothermal pretreatment, with China leading the way. The technology has gained significant attention for its environmentally friendly approach to breaking down lignocellulosic biomass and producing biofuels.
Researchers developed efficient tin-based catalysts for electrochemical CO2 reduction, enabling the production of high-value formic acid with improved selectivity and activity. The study's findings provide critical insights into the reaction mechanism, highlighting the importance of structural and kinetic factors in catalyst design.
Researchers analyzed 101 Chinese AML samples and identified three subtypes with different molecular characteristics and clinical outcomes. The study also found potential drug combinations that could improve treatment efficacy for subtype S-II&III patients who benefited from allogenic haematopoietic stem cell transplantation.
Researchers at Colorado State University have developed a stronger, biodegradable adhesive polymer that can replace common superglues. The new polymer, made from P3HB, offers tunable adhesion strength and is biodegradable under various conditions.
A new study reveals that northern pike are colonizing freshwater habitats in Southcentral Alaska through marine corridors, challenging existing conservation efforts. Researchers analyzed otoliths from caught fish and found isotopic signatures matching upper Cook Inlet water, suggesting the fish had occupied the inlet at some point.
A team of food scientists is developing tempeh products from chickpeas and peas to offset the health risks of a Western diet. The new fermented foods may help with obesity, fatty liver, hyperlipidemia, and diabetes. Preliminary research suggests they are high in fiber and low in fat.
A study published in PLOS Climate found substantial connections between fossil fuel, plastics, and agrichemical industries on Twitter. The research analyzed over 125,300 tweets from nine key players in these industries, revealing strong inter-sector connections, particularly between fossil fuel and plastics organizations.
Counterfeit spirits cost the EU €3 billion annually, with 25-40% of consumption in some areas. Experts advise monitoring 4 P's: product, price, package, and place of purchase to avoid contaminated alcohol-related deaths. A database is being built to test and compare alcoholic spirits using chemical fingerprints.
A new AI-driven approach identifies potentially harmful chemical substances in rivers by monitoring their effects on tiny water fleas, providing insights into complex mixtures and aquatic life. The study enables more comprehensive environmental monitoring and supports better-informed regulations for chemical discharge into waterways.
Researchers developed two machine learning algorithms to determine whisky origin and identify strongest aromas, outperforming human experts. The algorithms accurately classified whiskies into American or Scotch categories with over 90% accuracy.
Researchers discover surface chemistry unlike other centaurs on Chiron, with carbon dioxide and methane gases in its coma. The findings provide insight into the creation of our Solar System's origins and the unique processes producing Chiron's surface composition.
Researchers at Hokkaido University discovered that deep-sea hydrothermal vent bacteria can reduce nitrous oxide through an efficient energy metabolism mechanism. The study found that denitrification genes are negatively regulated by transcriptional regulators, suggesting a potential approach to mitigate climate change.
Researchers at St. Jude Children's Research Hospital have developed a novel solution to analyze the vast amounts of data generated by synthesizing large collections of new molecules. By using fragmentation patterns as universal barcodes, they can remove a key bottleneck in small molecule synthesis and screening.
The latest version of KnowItAll software introduces a groundbreaking new tool to automate LC-MS analysis and enhance data management. With the release of KnowItAll 2025, researchers can now streamline their workflows using automated solutions and comprehensive datasets.
A recent study of Texas high school indoor air revealed the presence of phthalates and PBDEs, linked to cancers, reproductive disorders, and nervous system damage. Researchers found correlations between SVOC concentrations and building characteristics, such as flooring type and classroom design.
The study reveals a high degree of technical mastery in the use of animal tendons, reed wood, and birch bark pitch to create bows and arrows. The findings shed new light on Neolithic archery techniques and materials in Europe.
A study by Chiba University researchers has identified 106 compounds in pregnant women's serum samples, including phthalates, nitrogenous compounds, and parabens, which may impact biological pathways. The study proposes a non-targeted approach for detecting foreign chemicals and evaluating their potential health effects.
Researchers have created a new technique to rapidly assess paracetamol levels from saliva using Mass Spectrometry technology. The Paper-Arrow Mass Spectrometry (PA-MS) test is non-invasive, fast, and cost-effective, with the potential to improve patient care and outcomes.
Researchers developed a new tool called SigRM to analyze single-cell epitranscriptomics data, enabling the study of RNA modifications in individual cells. This can provide valuable insights into gene regulation and its impact on health and disease, particularly in complex conditions like cancer.
Researchers analyzed 81 common household items for chemical makeup and exposure risks. The study used advanced chromatography and machine learning methods to identify chemicals that could pose negative health effects, such as synthetic antioxidant BKF, when exposure reached a certain threshold.
A new study by UCL researchers found no lasting changes in the Earth's climate after two massive asteroid impacts around 35.65 million years ago. The impact craters left behind no evidence of a shift in climate over 150,000 years.
Scientists visualized the ultrafast dynamics of molecule dissociation using a new analytical method at BESSY II. The results show that lighter atom groups are ejected first, followed by heavier fragments. This process unfolds rapidly, similar to a 'molecular catapult' effect.
Archaeologists have discovered that early North Americans made needles from the bones of fur-bearers, including foxes, hares, and cats, which were likely used to create garments for warmth. The findings provide strong evidence for tailored garment production using bone needles and fur-bearing animal pelts.
A global research team has discovered 'natural data loggers' in aquatic species, providing a historical record of the environment. The unique chemical fingerprints left by these organisms can help scientists track water temperatures, pollution levels, and ecosystem health.
A new study from Duke University reveals that historic lithium mining is unlikely to contaminate surrounding waters with common pollutants like arsenic and lead. However, high levels of other metals including lithium, rubidium, and cesium were found in the mine's waters.
A team led by Associate Professor Giuseppe Barca has developed software capable of accurately predicting molecular behavior and setting a new benchmark in computational chemistry. This breakthrough enables scientists to simulate drug performance with accuracy rivaling physical experiments, accelerating new therapeutics design.
A new study found that residential garden produce grown near the Fayetteville Works fluorochemical plant can contain high levels of GenX and other PFAS, posing an exposure risk to consumers. Water-rich produce like berries and figs exhibited the highest PFAS levels, with daily intake estimates suggesting a significant health concern.
A recent study by researchers at Kumamoto University found a potential link between exposure to certain everyday chemicals during pregnancy and the development of asthma in children. The study analyzed data from over 3,500 mother-child pairs and measured 24 types of phenols in urine samples collected from pregnant women.
The comprehensive review highlights the impact of electron density topology on materials science and chemistry. It reveals connections between methods, including NG QTAIM, and their potential for simulating complex reactions, enabling more realistic computing and understanding of matter.
A WVU research partnership with the DEA aims to improve fast and accurate identification of psychoactive substances like fentanyl. The Expert Algorithm for Substance Identification (EASI) will enable labs using different instruments to share data on chemical profiles, helping to identify drugs like fentanyl.
A Southwest Research Institute-led team developed a revised solar composition that potentially reconciles spectroscopy and helioseismology measurements for the first time. The new solar composition suggests higher levels of carbon, nitrogen, and oxygen in the Sun than previously thought.
A team of researchers has made the southernmost discovery of amber in the world, revealing environmental conditions and forest ecosystems near the South Pole. The 'Pine Island amber' provides direct insights into a swampy, conifer-rich, temperate rainforest environment 90 million years ago.
The Digital Olfaction Summit 2024 will present the latest developments in digital olfaction, including portable sensors like Scout3 and NeOse, and wearable devices for real-time scent detection. The event will also feature a unique challenge to digitize scents representing regional cultural essence.
Researchers at the University of Liverpool developed AI-driven mobile robots that can perform exploratory chemistry research tasks faster and more efficiently than humans. The robots use AI logic to make decisions, processing analytical datasets in real-time to determine the next steps in chemical synthesis.
Researchers analyzed steroids from animal dung in lake sediments to determine the dominant large herbivores that lived in northern Yellowstone National Park. The study found bison and elk as primary species for the last 2,300 years, with impacts on local ecosystems.
A study of human skeletal remains from the Tudor warship Mary Rose reveals that handedness may influence clavicle bone chemistry as people age. The analysis found increased mineral content and decreased protein content in right clavicles compared to left, suggesting repeated stress on the right side during activities like sailing.
Scientists at the University of Tokyo have developed a new system that increases the measurement rate of Raman spectroscopy, a technique used to identify molecules. This improvement enables faster identification of molecules and cells, with applications in biomedical diagnostics and material analytics.
Researchers developed an efficient analysis method to precisely determine gamma-glutamyl dipeptide concentrations, enabling prediction of full-bodied cheese flavor development. The method uses ultra-high performance liquid chromatography-mass spectrometry and can analyze 60 cheese samples per day.
A new study reveals that a giant meteorite impact, equivalent to four Mount Everests, triggered a tsunami that mixed ocean debris and heated the atmosphere. This led to a rapid recovery of bacterial life, with iron-metabolizing bacteria flourishing in its wake.
UCF researchers have developed a unique 'barcode' technique to quickly identify chiral molecules based on their infrared fingerprints. This technology has the potential to speed up pharmaceutical and medical advancements by identifying enantiomers, which can have different effects in the body or chemical reactions.
Researchers have explored biomass-derived antibacterial agents as a sustainable alternative to conventional compounds. The study reveals the potential of these agents in various sectors, including cosmetics and healthcare, and discusses challenges and future perspectives for their application.
Researchers developed a method to reconstruct hyperspectral images from standard RGB images using deep machine learning. The technique achieved over 70% accuracy in predicting soluble solid content and 88% accuracy in dry matter content in sweet potatoes, with potential applications for the agricultural industry.
A University of Maryland-led study found that burying wood in the right environmental conditions can stop its decomposition and help curb carbon dioxide emissions. The researchers analyzed a 3,775-year-old log and surrounding soil, revealing that it had lost less than 5% carbon dioxide thanks to the low-permeability clay soil.
Researchers are working on a new method for preserving microbial samples using microfluidics, biomaterials, and protein engineering. The goal is to improve biosurveillance and protect soldiers and civilians from infectious diseases.
A research team developed a computational workflow for analyzing large data sets in metabolomics, speeding up the process to capture chemical profiles of coastal environments. The tool, accessible to researchers worldwide, highlights potential sources of pollution and enables statistical insights within minutes.
A team of researchers from Shibaura Institute of Technology developed a moving particle simulation-aided soil plasticity analysis for earth pressure balance shield tunnelling. The study found that earth pressure is a reliable indicator for analyzing soil plasticity and proposed a computer-aided analysis system that precisely reflects e...
Researchers at TU Wien have developed a new method to generate extremely short, powerful ion pulses for controlled analysis of material surfaces. These pulses can be used to observe chemical processes in real-time, providing insights into surface physics and chemistry on a picosecond time scale.
Researchers from Tokyo Institute of Technology have developed a novel screening methodology using machine learning to identify key design guidelines for ternary metal sulfide electrocatalysts. Focusing on crystal structure leads to better results, overcoming challenges in material properties and electrochemical performance analysis.
A new mass spectrometry technique from Brown University dramatically reduces sample loss, paving the way for more accurate and efficient protein analysis. The nanopore ion source transfers ions directly into the vacuum of a mass spectrometer, eliminating the need for drying and vacuum processes.
Researchers developed MUSCLE, a method that combines single-molecule fluorescence microscopy with next-generation sequencing to profile complex biological processes. The technique enables simultaneous observation of vast arrays of samples, uncovering general trends and dynamic signatures.
A team of researchers from Tokyo Institute of Technology elucidated the mechanisms of electron transfer in upconversion organic light-emitting diodes, resulting in improved efficiency. They discovered a novel donor-acceptor combination that led to the fabrication of an efficient blue UC-OLED with an extremely low turn-on voltage.
Seven rock samples collected along the fan front of Mars' Jezero Crater show evidence of minerals formed in water, suggesting a watery environment. While organic matter cannot be confirmed, these rocks may hold the key to finding remnants of ancient Martian life.
Researchers found the stone's age and chemical composition matched rocks from northeast Scotland, differentiating it from Welsh bedrock. The discovery suggests a high level of societal organization and implies long-distance trade networks along the British coast.
The samples, obtained from river deposits in a dried-up lake on Mars, are crucial for understanding the Red Planet's water history. The fine-grained sediments in the rocks are believed to retain signs of past biological activity, including organic molecules, making them significant for searching for life on Mars.
Research by the Royal Ontario Museum identifies Great Salt Lake as a significant source of greenhouse gas emissions, with 4.1 million tons released in 2020. The study highlights the importance of considering desiccation of lakes and rivers in assessments of global greenhouse gas output.
Researchers analyzed rocks collected from seafloor, finding they date back to at least 2.5 billion years ago and have retained a stable oxidation state since then. The discovery provides new evidence on Earth's geologic history and sheds light on the planet's evolution.
Researchers found enriched levels of trace elements, including tungsten and gold, on shards from the basement's alchemical laboratory. The study provides insight into the substances used by Tycho Brahe in his experiments.
A new system developed by universities of Córdoba and Valencia can detect THC in saliva with high sensitivity and speed. This technique uses dispersive microextraction by sorption and needle-based electrospray ionization emitters for mass spectrometry, reducing the analysis process to just two steps.
A nested case-control study found that completing fecal immunochemical tests lowers overall death risk from colorectal cancer, particularly in the left colon. The association was observed across racial and ethnic groups, supporting its use in population-based screening strategies.