A5022029952- Air Quality Monitoring and Forecasting
- Atmospheric aerosols and clouds
- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Fire effects on ecosystems
- Energy and Environment Impacts
- Vehicle emissions and performance
- Advanced Frequency and Time Standards
- Biofuel production and bioconversion
- Water Quality Monitoring and Analysis
- Advanced biosensing and bioanalysis techniques
- Photovoltaic Systems and Sustainability
- Atmospheric and Environmental Gas Dynamics
- Biosensors and Analytical Detection
- Noise Effects and Management
- Electrochemical Analysis and Applications
- Seismology and Earthquake Studies
- Atomic and Subatomic Physics Research
- Smart Materials for Construction
- COVID-19 impact on air quality
Access Sensor Technologies (United States)
2018-2023
Sensors (United States)
2020-2021
Colorado State University
2016-2018
BackgroundApproximately 2·8 billion people are exposed to household air pollution from cooking with polluting fuels. Few monitoring studies have systematically measured health-damaging pollutant (ie, fine particulate matter [PM2·5] and black carbon) concentrations a wide range of fuels across diverse populations. This multinational study aimed assess the magnitude kitchen personal exposures PM2·5 carbon in rural communities environments.MethodsAs part Prospective Urban Rural Epidemiological...
Assessing personal exposure to air pollution has long proven challenging due technological limitations posed by the samplers themselves. Historically, wearable aerosol monitors have be expensive, noisy, and burdensome. The objective of this work was develop a new type monitor, an ultrasonic sampler (UPAS), overcome many in assessment. UPAS is time-integrated monitor that features novel micropump virtually silent during operation. A suite onboard environmental sensors integrated with pump...
Metal contamination of natural and drinking water systems poses hazards to public environmental health. Quantifying metal concentrations in typically requires sample collection the field followed by expensive laboratory analysis that can take days weeks obtain results. The objective this work was develop a low-cost, field-deployable method quantify trace levels copper coupling solid-phase extraction/preconcentration with microfluidic paper-based analytical device. This has advantages being...
Abstract. Wildfires and prescribed fires produce emissions that degrade visibility are harmful to human health. Smoke exposure monitoring is critical for public environmental health protection; however, ground-level measurements of smoke from wildfires has proven difficult, as existing (validated) technologies expensive, cumbersome, generally require line power. Few ground-based made during fire events, which limits our ability assess the impacts wildland smoke. The objective this work was...
Traditional methods for measuring personal exposure to fine particulate matter (PM2.5) are cumbersome and lack spatiotemporal resolution; that time-resolved limited a single species/component of PM. To address these limitations, we developed an automated microenvironmental aerosol sampler (AMAS), capable resolving by microenvironment. The AMAS is wearable device uses GPS sensor algorithm in conjunction with custom valve manifold sample PM2.5 onto distinct filter channels evaluate home,...
Use of polluting cooking fuels generates household air pollution (HAP) containing health-damaging levels fine particulate matter (PM2.5). Many global epidemiological studies rely on categorical HAP exposure indicators, which are poor surrogates measured PM2.5 levels. To quantitatively characterize a large scale, multinational measurement campaign was leveraged to develop and personal models.The Prospective Urban Rural Epidemiology (PURE)-AIR study included 48-hour monitoring kitchen...
Abstract. A pilot field campaign was conducted in the fall and winter of 2017 northern Colorado to test deployment Aerosol Mass Optical Depth (AMOD) instrument as part Citizen-Enabled Measurements for Satellites (CEAMS) network. Citizen scientists were recruited set up device take filter optical measurements aerosols their backyards. The goal network is provide more surface particulate matter aerosol depth (AOD) increase spatial temporal resolution ratios fine (PM2.5) AOD improve...
Abstract. Globally, fine particulate matter (PM2.5) air pollution is a leading contributor to death, disease, and environmental degradation. Satellite-based measurements of aerosol optical depth (AOD) are used estimate PM2.5 concentrations across the world, but relationship between satellite-estimated AOD ground-level uncertain. Sun photometers measure from Earth's surface often improve satellite data; however, reference-grade monitors expensive rarely co-located. This work presents...
A novel instrument designed for crowdsourced data collection on air quality and aerosol optical depth.
Abstract. A pilot field campaign was conducted in the fall and winter of 2017 northern Colorado to test deployment Aerosol Mass Optical Depth (AMOD) instrument as part Citizen-Enabled Measurements for Satellites (CEAMS) network. Citizen scientists were recruited set up device take filter optical measurements aerosols their backyards. The goal network is provide more surface particulate matter aerosol depth (AOD) increase spatial temporal resolution PM2.5 AOD ratios improve satellite-based...
Abstract. Atmospheric particulate matter smaller than 2.5 µm in diameter (PM2.5) has a negative impact on public health, the environment, and Earth's climate. Consequently, need exists for accurate, distributed measurements of surface-level PM2.5 concentrations at global scale. Existing measurement infrastructure provides broad sampling coverage but does not adequately characterize community-level air pollution high temporal resolution. This motivates development low-cost sensors which can...
Abstract. Globally, fine particulate matter (PM2.5) air pollution is a leading contributor to death, disease, and environmental degradation. Satellite-based measurements of aerosol optical depth (AOD) are used estimate PM2.5 concentrations across the world, but relationship between satellite-estimated AOD ground-level uncertain. Sun photometers measure from Earth's surface often improve satellite data; however, reference-grade monitors expensive rarely co-located. This work presents...
Introduction: Assessing personal exposure to air pollution has proven challenging, especially at scales relevant for epidemiologic research. The monitors themselves pose technological limitations (cost, noise, weight) that restrict research relatively modest sample sizes. Further complicating this problem are issues of reliability and user compliance, both which exacerbated when conducting in resource-limited environments. Methods: We developed a new monitor, an ultrasonic aerosol sampler...
Abstract. Wildfires and prescribed fires produce emissions that degrade visibility are harmful to human health. Smoke exposure monitoring is critical for public environmental health protection; however, ground-level measurements of smoke from wildfires has proven difficult, as existing (validated) technologies expensive, cumbersome, generally require line power. Few ground-based made during fire events, which limits our ability assess the impacts wildland smoke. The objective this work was...