Results 41 to 50 of about 53,305 (170)

Atmospheric pressure gas chromatography-time-of-flight-mass spectrometry (APGC-ToF-MS) for the determination of regulated and emerging contaminants in aqueous samples after stir bar sorptive extraction (SBSE) [PDF]

open access: yes, 2014
This work presents the development, optimization and validation of a multi-residue method for the simultaneous determination of 102 contaminants, including fragrances, UV filters, repellents, endocrine disruptors, biocides, polycyclic aromatic ...
Arbulu   +38 more
core   +2 more sources

Exposure to Rice Straw Ash Alters Survival, Development and Microbial Diversity in Amphibian Tadpoles

open access: yesEcology and Evolution, Volume 15, Issue 7, July 2025.
This study examined how aqueous ash extracts (AEA) from rice straw burning impact R. dybowskii tadpoles, revealing that higher concentrations (up to 6 g L−1) over 28 d reduced survival, impaired growth, and disrupted skin and gut microbiota diversity, with polycyclic aromatic hydrocarbons (PAHs) detected in water.
Qing Tong   +7 more
wiley   +1 more source

Traditional smoking of Wallachian cheeses and sausages in Polish and Slovak parts of the Carpathian Mountains

open access: yesJournal of Ethnic Foods
Wallachian expansion brought to the Carpathian Mountains a system of shepherd economy—farming, production of Wallachian cheeses, animals adapted to life in difficult mountain conditions—mainly sheep of the Cakiel breed group.
Władysław Migdał   +7 more
doaj   +1 more source

Seasonal patterns of polycyclic aromatic hydrocarbons in digestive gland and arm of octopus (Octopus vulgaris) from the Northwest Atlantic [PDF]

open access: yes, 2014
Among organic pollutants existing in coastal areas, polycyclic aromatic hydrocarbons (PAHs) are of great concern due to their ubiquity and carcinogenic potential.
Delerue-Matos, Cristina   +6 more
core   +1 more source

A Triptycene‐Based Cage Host for Aromatic Hydrocarbon Guests

open access: yesAsian Journal of Organic Chemistry, Volume 14, Issue 6, June 2025.
A molecular cage consisting of two tripodal triptycene units and three diphenylacetylene linkers includes aromatic guests such as anthracene, acenaphthylene, and pyrene into the cavity. The association constants of the host–guest complexation were determined by the 1H NMR titration.
Takuji Mitani   +4 more
wiley   +1 more source

Ecological and Health Risks of Polycyclic Aromatic Hydrocarbons in Particulate Matter in Chinese Cities

open access: yesGeoHealth, Volume 9, Issue 6, June 2025.
Abstract During the first two decades of the 21st century, the level of polycyclic aromatic hydrocarbon (PAH) pollution in urban atmospheric particulate matter (PM) in China significantly increased. By combining data from more than 6,695 individual samples covering 89 typical cities (population > 0.5 million people) across China, this study focuses on ...
Yongfu Wu   +8 more
wiley   +1 more source

Spatial Distribution of Petroleum Hydrocarbons in Sediment Cores from Blind Pass, St. Pete Beach, Florida [PDF]

open access: yes, 2009
One hundred and one sediment cores were collected to characterize the spatial distribution of petroleum hydrocarbons within and just outside Blind Pass, St. Pete Beach, Florida.
Adler, Madeleine M.   +9 more
core   +1 more source

Dynamics and kinetics of reversible homo-molecular dimerization of polycyclic aromatic hydrocarbons [PDF]

open access: yes, 2017
Physical dimerization of polycyclic aromatic hydrocarbons (PAHs) has been investigated via molecular dynamics (MD) simulation with the ReaxFF reactive force field that is developed to bridge the gap between the quantum mechanism and classical MD ...
Adri C. T. van Duin   +4 more
core   +1 more source

Recent Trends in the Development of Green Analytical Sample Preparation Methods Using Advanced Materials

open access: yesJournal of Separation Science, Volume 48, Issue 5, May 2025.
ABSTRACT Recent concern about the impact of environmental preservation and the health of living beings has opened new avenues for scientific research. In this context, contemporary analytical chemistry has been marked by the development of green analytical methodologies, which aim to reduce the use of toxic reagents and minimize the environmental ...
Eduardo Carasek   +5 more
wiley   +1 more source

Ion-Molecule Reactions in Unsaturated Hydrocarbons: Allene, Propyne, Diacetylene, and Vinylacetylene [PDF]

open access: yes, 1984
Ion-molecule reactions in allene, propyne, diacetylene, and vinylacetylene (1-buten-3-yne) have been studied at near-thermal energies by the technique of ion cyclotron resonance mass spectrometry.
Anicich, Vincent G.   +4 more
core   +1 more source

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