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RECORD NUMBER: 503 OF 647

OLS Field Name OLS Field Data
Main Title Studies of Acid Aerosols in Six Cities and in a New Multi-City Investigation: Design Issues.
Author Speizer., F. E. ;
CORP Author Harvard School of Public Health, Boston, MA. Dept. of Environmental Science and Physiology.;Health Effects Research Lab., Research Triangle Park, NC.
Publisher c1989
Year Published 1989
Report Number EPA-R-811650; EPA/600/J-89/454;
Stock Number PB91-109462
Additional Subjects Aerosols ; Sulfuric acid ; Air pollution ; Bronchitis ; Ozone ; Urban areas ; Children ; Exposure ; Reprints ; Air pollution monitoring ; Nitrates ; Hydrogen ions ; Pontage(Wisconsin) ; Topeka(Kansas) ; St Louis(Missouri) ; Watertown(Massachusetts) ; Kingston(Tennessee) ; Steubenville(Ohio)
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB91-109462 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 03/04/1991
Collation 9p
Abstract
As part of the on-going Harvard Study on the Health Effects of Sulfur Dioxide and Respirable Particulates, the authors have developed monitoring equipment for acidic particles that can be used in multiple field settings. Preliminary data suggest that these strong acid aerosol measurements may correlate with respiratory symptoms more closely than similar measurements of particulate matter less than 15 micro m in size. These results have led to the beginning of a U.S.-Canadian cooperative study to assess the chronic effects of acid aerosols on the health of North American children. Communities are being selected on the basis of anticipated levels of H2SO4 in ambient air along with predicted levels of ozone and nitrates. Each community will undergo a 1-year period of every other day, 24-hr monitoring with newly developed monitoring equipment that will allow for quantification of H ion concentrations, as well as for specific measures of ozone and acid fractions. At the end of the 1-year period, while measurements are still being made, approximately 600 children aged 7 to 11 in each of up to 24 communities will be assessed with standardized questionnaires completed by parents, and pulmonary function will be measured in the children while in school. By estimating chronic exposure from the year-long measurement of acid aerosols and consideration of specific criteria for selecting communities to study; the authors hope to minimize potential confounding to allow us to assess the chronic impact of strong acid in the atmosphere on the respiratory health of these children.