Exposure Methods

This page has a list of publications and news articles related to Innovative Strategies - Enhanced Exposure Assessment. Find more information on Innovation in HEI's research programs.

Research Report 122
Alison S Geyh
Susanne Hering
Nathan Kreisberg
Walter John
November 2004

Dr Alison S Geyh and colleagues at Johns Hopkins University evaluated the personal and microenvironmental aerosol speciation sampler (PMASS) prototype developed by Dr. Susanne Hering with HEI funding (HEI Research Report 114). The precision and accuracy of the prototype, which measures PM2.5 mass, elemental and organic carbon, sulfate, and nitrate, was evaluated in two locations with different PM composition. Baltimore, Maryland (outdoors), and Fresno, California (indoors). Geyh and colleagues set a target of 10% precision and 10% accuracy for all species measured.

Research Report 121
Maire SA Heikkinen
Yair Hazi
Hai Gao
Paul Peters
Morton Lippmann
September 2004

Dr. Beverly Cohen and her colleagues at New York University School of Medicine tested the performance of iron nanofilms to collect and measure sulfuric acid particles of different sizes under a variety of temperature and humidity conditions. The iron nanofilm detector is a thin iron-coated silicon chip. Particles would react with the iron, creating an elevated site or bump on the film surface, which can be visualized using an atomic force microscope.

Research Report 114
Susanne Hering
Nathan Kreisberg
Walter John
February 2003

Dr. Susanne Hering of Aerosol Dynamics Inc and her colleagues set out to design and validate a personal monitoring sampler for particles smaller than 2.5 µm (PM2.5) that is suitable for subsequent chemical speciation work. The sampler intended to meet the measurement needs for PM2.5 mass concentration and several of its major constituents including elemental carbon, organic carbon, sulfates, and nitrates.

Research Report 81
Ira B Tager
Patrick L Kinney
March 1998

Dr. Ira Tager and colleagues at the University of California at Berkeley (UCB), and Dr. Patrick Kinney and colleagues at the School of Public Health, Columbia University objectives were to develop new methods for estimating an individual's past exposure to ozone.

Research Report 63
Jack D Hackney
Petros Koutrakis
Yukio Yanagisawa
February 1994

Ozone is a highly reactive gas that is a pervasive air pollutant at ground level. It is a major component of urban smog, forming when emissions from mobile and industrial sources interact with sunlight. Assessing the risk of adverse health effects from such exposures is difficult because only limited data are available on the actual ozone concentrations that people experience. Under the HEI ozone sampler program, three studies were designed to advance the development and testing of personal ozone samplers. The studies were conducted by Dr. Hackney and colleagues at Rancho Los Amigos Medical Center (Part I), Dr. Koutrakis and colleagues at the Harvard School of Public Health (Part II), and Dr. Yanagisawa from the Harvard School of Public Health (Part III).