A5013404265- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Vehicle emissions and performance
- Air Quality Monitoring and Forecasting
- Climate Change and Health Impacts
- Indoor Air Quality and Microbial Exposure
- Energy and Environment Impacts
- Odor and Emission Control Technologies
- Thermochemical Biomass Conversion Processes
- Atmospheric and Environmental Gas Dynamics
- Noise Effects and Management
- Wind and Air Flow Studies
- Atmospheric Ozone and Climate
- Health and Medical Research Impacts
- Atmospheric aerosols and clouds
- Science, Research, and Medicine
- Advanced Chemical Sensor Technologies
- Environmental Impact and Sustainability
- Water Quality Monitoring and Analysis
- Aerosol Filtration and Electrostatic Precipitation
- Occupational and environmental lung diseases
- Academic Writing and Publishing
- Offshore Engineering and Technologies
- Fire effects on ecosystems
- Plant responses to elevated CO2
Harvard University
1993-2020
Colorado School of Public Health
2020
New York State Department of Environmental Conservation
2020
North Carolina State University
2020
Carnegie Mellon University
2020
Cleveland Museum of Natural History
2012
Case Western Reserve University
2012
MetroHealth Medical Center
2012
Cleveland Clinic
2012
National Academies of Sciences, Engineering, and Medicine
2000
We investigated associations between ambient pollution levels and cardiovascular function in a repeated measures study including 163 observations on twenty-one 53- to 87-year-old active Boston residents observed up 12 times from June September 1997. Particles with aerodynamic diameter </=2.5 microm (PM(2.5)) were measured continuously using tapered element oscillating microbalance.The protocol involved 25 minutes per week of continuous Holter ECG monitoring, 5 rest, standing, exercise...
Air pollution episodes have been associated with increased cardiovascular hospital admissions and mortality in time-series studies. We tested the hypothesis that patients implanted cardioverter defibrillators experience potentially life-threatening arrhythmias after such air episodes. compared defibrillator discharge interventions among 100 devices eastern Massachusetts, according to variations concentrations of particulate matter, black carbon, gaseous pollutants were measured daily for...
An intensive particle monitoring study was conducted in homes the Boston, Massachusetts, area during winter and summer of 1996 an effort to characterize sources indoor particles. As part this study, continuous size mass concentration data were collected four single-family homes, with each home monitored for one or two 6-day periods. Additionally, housing activity air exchange rate collected. Cooking, cleaning, movement people identified as most important these homes. These contributed...
Abstract Increased interest in the health effects of ambient par–ticulate mass (PM) has focused attention on evaluation existing measurement methodologies and definition PM air. The Rupprecht Patashnick Tapered Element Oscillating MicroBalance (TEOM®) method for is compared with time–integrated gravimetric (manual) methods large urban areas during different seasons. Comparisons are conducted both PM10 PM2.5 concentrations. In areas, a substantial fraction can be semi–volatile material. A...
The chemical composition of 23 wood chip samples and 132 pellet manufactured in the United States Canada were analyzed for their energy properties compared to German standards quality. obtained from various locations across northern New York England included 100 different manufacturers duplicate some brands. calorific value, moisture content, ash content determined according American Society Testing Materials (ASTM) methods. Sulfate chloride prepared using ASTM methods by ion chromatography...
This study evaluated the acute effects of ambient ozone (O3), fine particulate matter (PM2.5), and strong aerosol acidity on pulmonary function exercising adults. During summers 1991 1992, volunteers (18-64 years age) were solicited from hikers Mt. Washington, New Hampshire. Volunteer nonsmokers with complete covariates (n = 530) had measured before after their hikes. We calculated each hiker's posthike percentage change in forced expiratory volume 1 sec (FEV1), vital capacity (FVC), ratio...
The United States Environmental Protection Agency held an international two-day workshop in June 2018 to deliberate possible performance targets for non-regulatory fine particulate matter (PM2.5) and ozone (O3) air sensors. need a arose from the lack of any market-wide manufacturer requirement documented sensor evaluations, independent third party or government-based certification program, uncertainty among all users as general usability data. A multi-sector subject expert panel was...
ABSTRACT Methods that measure PM25 mass, total particulate NO3 -, and elemental carbon (EC) were evaluated in seven U.S. cities from 1997 to 1999. Sampling was performed Bakersfield, CA; Boston, MA; Chicago, IL; Dallas, TX; Philadelphia, PA; Phoenix, AZ; Riverside, CA. Evaluating validating methods the components of fine mass are important effort establishing a speciation-monitoring network. The Harvard Impactor (HI), which measures particle showed excellent agreement (r2 = 0.99) with...
Pollution from cordwood stoves includes fine particulate matter (PM), hazardous air pollutants (HAPs), greenhouse gases (GHGs), and other compounds that impact human health climate. To better understand emissions under typical homeowner use patterns, we tested five U.S. (four meeting 2020 New Source Performance Standards (NSPS) one pre-NSPS, circa 1980 stove) across three technology types using the novel Integrated Duty Cycle (IDC) protocol. We report factors by IDC phase, which represent...
An intensive field campaign of the Atlanta Supersite Experiment was carried out at a ground‐based measurement site on Jefferson Street in midtown Atlanta, Georgia, from 3 August to 1 September 1999. This paper examines semicontinuous particulate organic and elemental measurements that were made as part experiment. Measurements using Rutgers University/Oregon Graduate Institute situ thermal‐optical carbon analyzer, Rupprecht Patashnick 5400 ambient monitor, Radiance Research particle soot...
65–74% of light extinction is due to scattering in Mexico City. Organic aerosols dominate both submicron mass loading and scattering. Brown carbon black contribute 22% 78% the total absorption, respectively. Road traffic regional wildfires are main contributors absorption. The aerosols' optical properties exhibit distinctive diurnal seasonal patterns.
An ambient particle monitoring study was conducted in Washington, D.C. during the summer of 1994 as part Metropolitan Acid Aerosol Characterization Study (MAACS). aerosol and inhalable (particulate matter with aerodynamic diameters < 10 micron; PM10) fine 2.5 PM2.5) samples were collected for 24-hr periods (9 A.M.-9 A.M. EDT) on alternate days at six sites located throughout greater area. Monitoring both urban rural areas generally situated along a southwest to northeast line due prevailing...
The acute effects of ozone (O3) on the change in lung function before and after exercise was assessed 22 boys 18 girls from 7 1/2 to 11 yr age tested up eight times over a 1 1/2-yr period outdoors (under tarpaulin) at school Mexico City. Ozone particulates were monitored an adjacent government station, yard, under tarp. Subjects selected oversample children with chronic respiratory symptoms, although active asthma regular medication or FEV1 < 80% predicted excluded. Of participants, 21 had...
Air pollution from residential wood heating poses a significant public health risk and is primary cause of PM nonattainment in some areas the United States. Those emissions also play role regional haze climate change. While regulatory programs have focused on reductions large facilities, sector has received limited attention. The failure to develop effective address this emission source hampers ability state local air quality meet clean goals. An updated New Source Performance Standard...
The increasing popularity of wood fired heating appliances in cold winter climates has focused attention on assessment woodsmoke exposures. Pollution from residential combustion (RWC) is a major concern areas with valley topography where nighttime inversions limit the dispersion pollutants ground-level sources. An intensive characterization ambient particulate mater (PM) RWC was performed northern New York State during 2008–2009 an area 2005 U.S. EPA National Emissions Inventory shows to be...
While researchers have linked acute (less than 12-hr) ambient O3, PM25, and CO concentrations to a variety of adverse health effects, few studies characterized short-term exposures these air pollutants, in part due the lack sensitive, accurate, precise sampling technologies. In this paper, we present results from laboratory field evaluation several new (or modified) samplers used "roll-around" system (RAS), which was developed measure 1-hr simultaneously. All data were collected during two...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvaluation of the Harvard Ozone Passive Sampler on Human Subjects IndoorsL.-J. Sally. Liu, Melvin P. Olson, George A. Allen, Petros. Koutrakis, William F. McDonnell, and Timothy R. GerrityCite this: Environ. Sci. Technol. 1994, 28, 5, 915–923Publication Date (Print):May 1, 1994Publication History Published online1 May 2002Published inissue 1 1994https://pubs.acs.org/doi/10.1021/es00054a024https://doi.org/10.1021/es00054a024research-articleACS...
Abstract. DC, also referred to as Delta-C, measures enhanced light absorption of particulate matter (PM) samples at the near-ultraviolet (UV) range relative near-infrared range, which has been proposed previously a woodsmoke marker due presence UV light-absorbing materials from wood combustion. In this paper, we further evaluated applications and limitations using DC both qualitative semi-quantitative via joint continuous measurements PM2. 5 (by nephelometer pDR-1500) light-absorptive PM...
Abstract Acidic sulfate concentrations were measured in metropolitan Philadelphia during the summers of 1992 and 1993, as part a continuing effort to characterize particle urban environments. Sampling was performed simultaneously at eight sites located within around Philadelphia. Sites selected based on their population density distance direction from city center. Air pollution sampling conducted every other day summer 1993. All samples collected for 24-h periods beginning 9 a.m. (EDT)....