Results 81 to 90 of about 15,268 (209)

Chemical Characterisation of Steam‐Distilled Essential Oils From Lemongrass (Cymbopogon citratus Stapf) and Ginger Rhizomes (Zingiber officinale Roscoe) Using FTIR and GC‐MS: Comparison of Phytochemical Composition

open access: yesPhytochemicals in Food and Medicine, Volume 1, Issue 4, December 2026.
Illustration of essential oil extraction coupled with characterisation. ABSTRACT Essential oils from lemongrass and ginger rhizomes contain bioactive compounds with potential for nutraceutical and pharmaceutical applications. In this study, essential oils were extracted from ginger rhizomes and lemongrass by the steam distillation method, using a ...
Abdullahi Nwaha Isah   +5 more
wiley   +1 more source

Prevalence of Local Emissions in Arctic Carbonaceous Aerosols Revealed by Dual Carbon Isotopes and Atmospheric Transport Modeling

open access: yesGeophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract Carbonaceous aerosols in the Arctic are mainly attributed to long‐range transport from lower latitudes, but direct observational data over the central Arctic Ocean, particularly in summer, remain limited. We present a cruise‐based study conducted during the eighth Xuelong Arctic expedition across the central Arctic Ocean.
Md. Mozammel Haque   +4 more
wiley   +1 more source

Intramolecular Nickel‐Catalyzed Reductive Coupling: Enantioselective Synthesis of Tetrahydroisoquinolines and Related Heterocycles

open access: yesAngewandte Chemie, Volume 138, Issue 43, 19 October 2026.
The successful extension of the nickel‐catalyzed asymmetric coupling of polarized 1,3‐dienes with aldehydes to an intramolecular setting opens an efficient new entry into hydroxylated N‐heterocyclic compounds, most notably valuable tetrahydroisoquinolines.
Thilo Bender   +3 more
wiley   +2 more sources

Important but Overlooked Reactive Organic Carbon (ROC) Air Pollution From Permafrost Wildfires in Canada

open access: yesGeophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract Canadian permafrost wildfires, characterized by surface flaming and deep organic soil smoldering, emit complex suites of volatile organic compounds (VOCs). These emissions include air toxics that pose substantial public health risks and fuel secondary pollution, yet remain understudied.
Xueying Liu   +10 more
wiley   +1 more source

Does the Conversion of Biogenic Organic Nitrates to Nitric Acid Control the Lifetime of Atmospheric Nitrogen Oxides Over the Eastern U.S.?

open access: yesGeophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract Airborne measurements over the Southeast US during the summer of 2013 revealed the evolution of nitrogen oxides and nitric acid that was markedly different from that over the Northeast US during the winter of 2015. We can reconcile the observed trends by invoking nitrogen oxide reservoir species formed under elevated NOx environments that then
Ben H. Lee   +6 more
wiley   +1 more source

“Smelltronics”—From Gas to Smell Sensing

open access: yesAdvanced Materials, Volume 38, Issue 61, 2 November 2026.
The emerging field of smelltronics, encompassing sensing technologies for complex volatile organic compounds, holds significant potential for extracting valuable chemical information. It facilitates the noninvasive, real‐time monitoring of humans, food, and the environment.
Takeshi Ono   +7 more
wiley   +1 more source

Allergic Contact Dermatitis in Waste Management Workers Linked to Polyisoprene Mask Bands

open access: yes
Contact Dermatitis, EarlyView.
Pau Forte‐Genescà   +5 more
wiley   +1 more source

A walk in the park—Identifying healthy greenspaces using scents

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 6, Page 2121-2134, November 2026.
As urbanisation accelerates globally, access to nature is increasingly recognised as vital for public health and wellbeing. We captured and analysed plant‐emitted airborne ‘scent signatures’ across Oxford's urban greenspaces to assess their potential health relevance.
William T. Kay   +6 more
wiley   +1 more source

Aqueous‐Phase Processing of Organic Aerosols at the Southern Great Plains: Insights From Integrated Chemical and Microphysical Analyses

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Aqueous‐phase reactions are hypothesized to be a major pathway for secondary organic aerosol (SOA) formation in humid, cloud‐influenced environments, yet direct observational constraints remain limited. Here we investigated aqueous SOA (aqSOA) formation and evolution during the spring 2016 Holistic Interactions of Shallow Clouds, Aerosols, and
J. Trousdell   +5 more
wiley   +1 more source

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