Results 61 to 70 of about 1,487 (151)

Rapid "breath-print" of liver cirrhosis by proton transfer reaction time-of-flight mass spectrometry. A pilot study.

PLoS ONE, 2013
UnlabelledThe aim of the present work was to test the potential of Proton Transfer Reaction Time-of-Flight Mass Spectrometry (PTR-ToF-MS) in the diagnosis of liver cirrhosis and the assessment of disease severity by direct analysis of exhaled breath ...
Filomena Morisco, Eugenio Aprea, Vincenzo Lembo, Vincenzo Fogliano, Paola Vitaglione, Giovanna Mazzone, Luca Cappellin, Flavia Gasperi, Stefania Masone, Giovanni Domenico De Palma, Riccardo Marmo, Nicola Caporaso, Franco Biasioli   +12 more
doaj   +1 more source

Development of the United States GReenhouse Gas and Air Pollutants Emissions System (GRA2PES)

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 20, 28 October 2025.
Abstract In the U.S., emissions of greenhouse gases and air pollutants are often developed independently. Here, we describe the GReenhouse gas And Air Pollutants Emissions System (GRA2PES), which provides gridded emissions of fossil‐fuel carbon dioxide (ffCO2) and 93 air quality (AQ) species for 17 combustion and non‐combustion sectors at 4 km × 4 km ...
Congmeng Lyu, Colin Harkins, Meng Li, Kimberly Mueller, Jack Prothero, Bert Verreyken, John B. Miller, Scott J. Lehman, Jeff Peischl, Jessica B. Gilman, Carsten Warneke, Matthew M. Coggon, Chelsea E. Stockwell, Steven S. Brown, Kristen Zuraski, Aaron Lamplugh, Kevin R. Gurney, Lech Gawuc, Pawlok Dass, Rachel M. Hoesly, Steven J. Smith, Tomohiro Oda, Lucy R. Hutyra, Conor K. Gately, Claire Granier, James R. Whetstone, Brian C. McDonald   +26 more
wiley   +1 more source

Air Quality Field Measurements in Las Vegas: Ozone Formation and Its Sensitivity to NOx and VOCs

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 19, 16 October 2025.
Abstract Las Vegas, Nevada is an urban center in the southwest US where the population is rapidly growing. In Las Vegas, surrounded by the Mojave Desert, biogenic emissions are low, but anthropogenic emissions, especially along the Las Vegas Strip, are a large source of volatile organic compounds (VOC) and nitrogen oxides (NO + NO2 = NOx) from volatile
C. Warneke, C. E. Stockwell, J. Peischl, J. B. Gilman, A. Lamplugh, L. Xu, K. Zuraski, S. S. Brown, S. Baidar, R. Marchbanks, W. A. Brewer, M. Li, B. McDonald, M. M. Coggon   +13 more
wiley   +1 more source

Contribution of Terpenes to Ozone Formation and Secondary Organic Aerosols in a Subtropical Forest Impacted by Urban Pollution

Atmosphere, 2020
The highly reactive nature of biogenic volatile organic compounds (BVOCs) impacts the biosphere by acting as a precursor of ozone and aerosols that influence air quality and climate.
Christian Mark Salvador, Charles C.-K. Chou, Tse-Tsung Ho, Chao-Yang Tsai, Tsung-Ming Tsao, Ming-Jer Tsai, Ta-Chen Su   +6 more
doaj   +1 more source

Net emission of atmospheric volatile organic compounds from ponds in a peatland forest

Limnology and Oceanography, Volume 70, Issue 10, Page 3076-3088, October 2025.
Abstract The role of small water bodies in global carbon emissions is increasingly acknowledged. In addition to the well‐investigated greenhouse gases, carbon dioxide (CO2) and methane, volatile organic compounds (VOCs) may be emitted from freshwater ecosystems, especially from small water bodies, but the composition of emitted VOCs and emission ...
Yinghuan Qin, Kajsa Emilia Roslund, Amy Samantha Smart, Jesper Riis Christiansen, Riikka Rinnan   +4 more
wiley   +1 more source

Constraining Atmospheric Methanethiol Estimates Over the Southern Ocean

Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.
Abstract Dimethyl sulfide (DMS) and methanethiol (MeSH) are biologically co‐produced marine volatile sulfur compounds, which play a critical role in climate‐cooling aerosol formation. The spatio‐temporal distributions of MeSH are poorly constrained, especially over the Southern Ocean.
Caleb Mynard, Emily B. Franklin, Joel Alroe, Nigel Somerville, Antonio Patti, Steven T. Siems, Alastair Williams, Marc D. Mallet, Ruhi Humphries, Erin Dunne   +9 more
wiley   +1 more source

Efficient Pollination Stinks: Corpse Flowers Use Floral Trapping and Persistent Emissions

Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.
Abstract Flowering corpse plants attract pollinating carrion insects through pungent, nocturnal odors. Female flowers primarily emit organosulfur, including ∼12gS/hour as methanethiol with mixing ratios comparable to landfills; male emissions are smaller and more diverse.
Rose K. Rossell, Mj Riches, Abigail R. Koss, Tammy Brenner, Delphine K. Farmer   +4 more
wiley   +1 more source

Development of High-Resolution Proton Transfer Reaction Time-of-Flight Mass Spectrometer and its Application in Continuous Fixed-Point Monitoring of Atmospheric VOCs

Zhipu Xuebao
The online mass spectrometry for volatile organic compounds (VOCs) analysis has rapidly advanced and found extensive applications in environmental monitoring, food safety, and life science research due to its fast analysis speed, high temporal resolution,
Zhong-jun ZHAO, Han-lu YUE, Xing GUO, Fu-long DENG, Xing-liang HE, Cheng-lin LI, Yun-hai XU, Yan-ting YANG, Yi-xiang DUAN   +8 more
doaj   +1 more source

Molecular Nanoarchitectonic Sensing Layer for Analysis of Volatile Fatty Acids in Bioreactor Headspaces Using a Nanomechanical Sensor

Advanced Materials Technologies, Volume 10, Issue 17, September 4, 2025.
A porous crystalline sensing layer has been developed in conjunction with a nanomechanical sensor for the sensitive detection of volatile fatty acids (VFAs) in admixture at high relative humidity. The sensitive, selective sensor based on supramolecular design improves the economic viability of anaerobic digesters toward a carbon neutral society ...
Subrata Maji, Jan Hynek, Kazushi Nakada, Akiko Hori, Kosuke Minami, Jan Labuta, Mandeep K. Chahal, Daniel T. Payne, Gary J. Richards, Lok Kumar Shrestha, Katsuhiko Ariga, Yusuke Yamauchi, Genki Yoshikawa, Jonathan P. Hill   +13 more
wiley   +1 more source

Berries aroma phenomics by PTR-ToF-MS

, 2016
Aroma is one of main factors impacting fruit and vegetables quality and consumer appreciation. Since aroma involves the perception of a pletora of volatile organic compounds (VOCs), their assessment is crucial to guarantee the selection and marketability of high quality fruits.
Farneti, B., Khomenko, I., Algarra Alarcon, A., Grisenti, M., Ajelli, M., Poncetta, P., Cappellin, L., Giongo, L., Biasioli, F.   +8 more
openaire   +2 more sources