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The authors of a study recently published in IJERPH quantified levels of benzene, toluene and xylenes (BTXs) in e-liquids and aerosols in a sample of 20 disposable e-cigarettes collected in Mexico City [...].
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12294426 | PMC |
http://dx.doi.org/10.3390/ijerph22071049 | DOI Listing |
J Chromatogr A
September 2025
Environment Research Institute, Shandong University, Qingdao, 266237, China. Electronic address:
On-site accurate and real-time monitoring of trace chemical warfare agents is a critical component of national security surveillance. In this study, a photoionization-induced chemical ionization time-of-flight mass spectrometry is developed for the detection of trace gaseous chemical warfare agents under ambient conditions. Firstly, a benzene-toluene-xylene mixture standard gas is utilized to optimize the instrument parameters, followed by screening of dopants for chemical warfare agents detection, with methanol ultimately identified as the optimal dopant.
View Article and Find Full Text PDFJ Chromatogr A
September 2025
Luoyang R&D Center of Technology, SINOPEC Engineering (Group) Co., Ltd, Luoyang 471003, China. Electronic address:
Conventional one-dimensional gas chromatography methods for gasoline quality monitoring require separate analyses for different component classes, limiting analytical efficiency and unconventional additive detection. This study presents a comprehensive two-dimensional gas chromatography with flame ionization detection (GC × GC-FID) platform enabling simultaneous quantification of regulated components and rapid screening of unconventional additives in a single analytical run. The method achieved excellent agreement with ASTM standards and high repeatability for BTEX (benzene, toluene, ethylbenzene, and xylenes) and oxygenates in gasoline.
View Article and Find Full Text PDFMaterials (Basel)
August 2025
School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China.
A series of Ce-doped α-MnO catalysts (CeMnO, x = 0.04, 0.07, 0.
View Article and Find Full Text PDFToxics
August 2025
Institute of Health Medical Education Convergence Research, Kangwon National University, 346 Jungang-ro, Samcheok-si 25913, Republic of Korea.
Volatile organic compounds (VOCs) are common indoor air pollutants known to pose significant health risks, yet little is known about how internal exposure varies across populations and environments. This study investigated the associations between indoor air pollutants and urinary VOC biomarkers in a nationally representative sample. We analyzed data from 1880 adults in the eighth Korea National Health and Nutrition Examination Survey (2020-2021) who completed an indoor air quality (IAQ) survey and provided urine samples, assessing the influence of sociodemographic, behavioral, and environmental factors.
View Article and Find Full Text PDFToxics
July 2025
Transportation Environmental Research Department, Korea Railroad Research Institute (KRRI), Cheoldo Bangmulgwanro, Uiwang-si 16105, Republic of Korea.
Rapid industrialization and urbanization have progressed in Korea, yet public attention to hazardous pollutants emitted from industrial complexes remains limited. With the increasing coexistence of industrial and residential areas, there is a growing need for real-time monitoring and management plans that account for the rapid dispersion of hazardous air pollutants (HAPs). In this study, we conducted spatiotemporal data collection and analysis for the first time in Korea using real-time measurements obtained through mobile extractive differential optical absorption spectroscopy (Me-DOAS) mounted on a solar occultation flux (SOF) vehicle.
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