Application and validation of a wearable monitor for assessing time- and location-resolved exposures to particulate matter in California’s Central Valley DOI
Xiaoying Li, Jessica Tryner, Bonnie N. Young

et al.

Aerosol Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 17

Published: Nov. 22, 2024

Reliable assessment of personal exposure to air pollution remains a challenge due the limitations monitoring technology. Recent technology developments, such as reductions in size and cost samplers well incorporation continuous sensors for location, activity, (i.e., global positioning systems [GPS], accelerometers, low-cost pollutant sensors), have advanced our ability assess pollution. This study evaluated upgraded Ultrasonic Personal Air Sampler (UPAS v2.1 PLUS) tool quantifying time-integrated indoor particulate matter (PM) black carbon (BC) among panel participants California's Central Valley exploring exposures different microenvironments using time/location-resolved PM2.5 data. Three field campaigns demonstrated that filter-derived PM10, PM2.5, PM10 BC, BC concentrations measured UPAS were linear, unbiased, precise compared those conventional sampling equipment. Time-resolved GPS, light intensity data from allowed across microenvironments. The majority daily occurred inside home. Participants with higher out-of-home received primarily agricultural in-transit environments, accordance their self-reported occupational exposures. PLUS is reliable valid characterizing both temporal spatial dimensions. Its enhanced capabilities should reduce burden activity logging enable accurate estimation epidemiological community-based research.

Language: Английский

Modelling Health Implications of Extreme PM2.5 Concentrations in Indian Sub-Continent: Comprehensive Review with Longitudinal Trends and Deep Learning Predictions DOI
Kuldeep Singh Rautela,

Manish Kumar Goyal

Technology in Society, Journal Year: 2025, Volume and Issue: unknown, P. 102843 - 102843

Published: Feb. 1, 2025

Language: Английский

Citations

1
Acoustic Levitation-Controlled Droplets for Contactless Enrichment and Sensitive Detection of Volatile Organic Substances Integrated with GC-MS DOI

Shanshan Ma,

Yake Luo,

Bo Sui

et al.

Analytical Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 12, 2024

Analyzing trace-level volatile organic compounds (VOCs) remains challenging due to initial sampling and preconcentration limitations. Inspired by the highly reproducible constantly renewable electrode surface of dropping mercury (DME), a contactless enrichment process was first reported using an acoustic levitation device trap concentrate VOCs from gas samples onto suspended droplets, which were then directly transferred into chromatography-mass spectrometry (GC-MS) for real-time analysis. Compared with traditional methods injection methods, this method achieves 46-fold increase in nicotine peak area. The detection sensitivity enhanced significantly, attributed high specific area droplets accelerating extraction vibration. Notably, number identified burning cigarettes significantly increased 17 212, including 22 aromatic distinct aromas. remarkable versatility demonstrated effectively monitoring dynamic changes 16 environmental tobacco smoke (ETS) following cigarette burning, revealing persistence these compounds, even after 40 min. Moreover, analyzing human-exhaled aerosol found that rapidly decreased while its metabolite cotinine increased, showcasing potential tracking human metabolism behavior vivo. Furthermore, multivariate data analysis VOC profiles six brands allowed their visual differentiation. With versatility, sensitivity, ability distinguish realtime, offers promising avenues monitoring, metabolic studies, various analytical applications.

Language: Английский

Citations

3
Calibration of a Low-Cost Particulate Matter Sensor Using the Decay Method DOI Open Access
Casmika Saputra,

Muhammad Nur Faqiih,

Asthari Fachsya Thalia

et al.

Journal of Physics Conference Series, Journal Year: 2025, Volume and Issue: 2942(1), P. 012042 - 012042

Published: Feb. 1, 2025

Abstract Air pollution, particularly particulate matter (PM), poses significant health risks and environmental challenges. Real-time air quality monitoring is crucial for effective management mitigation strategies, especially in personal exposure contexts. Wearable devices, commonly utilizing low-cost optical PM sensors, offer a promising solution. However, these sensors often require recalibration to ensure accuracy reliability. This study focuses on calibrating the SPS30 sensor, popular improve its performance wearable applications. The calibration process was conducted using decay method an aerosol chamber, aligning SPS30’s readings with those of reference sensor (HT-9600). results demonstrated excellent correlation between both PM2.5 PM10 measurements. confirms that proper can enhance accuracy, making it reliable tool real-time, monitoring, which essential public management.

Language: Английский

Citations

0
Efficient Purification of Multiple Pollutants of Tobacco Smoke via Photocatalytic Oxidation Purifier DOI
Biyuan Liu, Jiarui Zhang, Z. B. Li

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

Tobacco smoke, a complex mixture of particulate matter (PM) and gaseous pollutants, poses serious health risks remains significant challenge for indoor air purification. Photocatalytic oxidation (PCO) technology has emerged as an effective strategy pollutant removal, but its application in real tobacco smoke purification associated impacts underexplored. Herein, we investigated the simultaneous removal PM volatile organic compounds (VOCs) from using PCO purifier. The purifier exhibited superior achieving 99% efficiency within 10 min reducing ultrafine concentrations to one-tenth those observed with high (HEPA) filtration. 63 main VOCs, predominantly oxygenated were identified exhibiting over 300 min. Furthermore, demonstrated exceptional stability long-term durability across varying humidity levels concentrations. hazard index (HI) was quantified evaluate smoke. reduced HI by 95% 120 min, demonstrating effectiveness mitigating exposure risks. Additionally, major primarily established four key indicator (i.e., 2,5-dimethylfuran, 2,3-butanedione, n-nitrosomethylethylamine, isocyanic acid), which reliably estimated overall during study provides promising multiple pollutants environment along convenient method assessing impacts.

Language: Английский

Citations

0
Monitoring Skin Volatile Emissions Using Wearable Sensors DOI
Roberta Angioi, Nipun Thamatam, Masoud Agah

et al.

Annual Review of Analytical Chemistry, Journal Year: 2025, Volume and Issue: 18(1), P. 285 - 305

Published: May 15, 2025

Human skin emits a continuous flux of volatile compounds reflecting various metabolic processes in the body, microbial activity, and environmental factors. Harnessing this emission for diagnostics is great interest given noninvasive, passive, accessible nature emission, there much research underway to understand value skin-emitted organic compound (VOC) matrix. In parallel this, wearable VOC sensors are emerging garnering attention due their potential provide real-time information monitoring human health, overcoming many design challenges related biofluid via wearables. The projected opportunities VOCs fueling innovations monitoring. This review discusses most recent developments, from fully integrated that exploit existing semiconductor technology preparation advanced new sensing materials devices deliver modalities sensors. We articulate challenges, limitations, technological advances perspective on promising directions future developments.

Language: Английский

Citations

0
Particle number size distribution evaluation of Plantower PMS5003 low-cost PM sensors – a field experiment DOI Creative Commons
Alexandre Caseiro, Seán Schmitz, Erika von Schneidemesser

et al.

Environmental Science Atmospheres, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

In terms of particle number distribution, the agreement ratio between a low-cost sensor and research-grade instrument spans several orders magnitude. The can be constrained as function reported number.

Language: Английский

Citations

1
Application and validation of a wearable monitor for assessing time- and location-resolved exposures to particulate matter in California’s Central Valley DOI
Xiaoying Li, Jessica Tryner, Bonnie N. Young

et al.

Aerosol Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 17

Published: Nov. 22, 2024

Reliable assessment of personal exposure to air pollution remains a challenge due the limitations monitoring technology. Recent technology developments, such as reductions in size and cost samplers well incorporation continuous sensors for location, activity, (i.e., global positioning systems [GPS], accelerometers, low-cost pollutant sensors), have advanced our ability assess pollution. This study evaluated upgraded Ultrasonic Personal Air Sampler (UPAS v2.1 PLUS) tool quantifying time-integrated indoor particulate matter (PM) black carbon (BC) among panel participants California's Central Valley exploring exposures different microenvironments using time/location-resolved PM2.5 data. Three field campaigns demonstrated that filter-derived PM10, PM2.5, PM10 BC, BC concentrations measured UPAS were linear, unbiased, precise compared those conventional sampling equipment. Time-resolved GPS, light intensity data from allowed across microenvironments. The majority daily occurred inside home. Participants with higher out-of-home received primarily agricultural in-transit environments, accordance their self-reported occupational exposures. PLUS is reliable valid characterizing both temporal spatial dimensions. Its enhanced capabilities should reduce burden activity logging enable accurate estimation epidemiological community-based research.

Language: Английский

Citations

1