Main Title |
Exposures to Acidic Aerosols. |
Author |
Spengler, J. D. ;
Keeler, G. J. ;
Koutrakis, P. ;
Ryan, P. B. ;
Raizenne, M. ;
|
CORP Author |
Harvard School of Public Health, Boston, MA. ;Environmental Health Directorate, Ottawa (Ontario).;Health Effects Research Lab., Research Triangle Park, NC. |
Publisher |
c1989 |
Year Published |
1989 |
Report Number |
EPA/600/J-89/452; |
Stock Number |
PB91-109447 |
Additional Subjects |
Aerosols ;
Air pollution ;
Exposure ;
Seasonal variations ;
Respiratory system ;
Children ;
Ontario ;
Urban areas ;
Sulfuric acid ;
Reprints ;
Air pollution monitoring ;
Hydrogen ions ;
Kingston(Tennessee) ;
St Louis(Missouri) ;
Steubenville(Ohio) ;
Portage(Wisconsin)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-109447 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
11p |
Abstract |
Ambient monitoring of acid aerosols in four U.S. cities and in a rural region of southern Ontario clearly show distinct periods of strong acidity. Measurements made in Kingston, TN, and Steubenville, OH, resulted in 24-hr H(+) ion concentrations exceeding 100 nmole/cu m more than 10 times during summer months. Periods of elevated acidic aerosols occur less frequently in winter months. The H(+) determined during episodic conditions in southern Ontario indicates that respiratory tract deposition can exceed the effects level reported in clinical studies. Observed 12-hr (H+) concentrations exceeded 550 nmole/cu m (approximately 27 microgram/cu m H2SO4). The maximum estimated 1-hr concentration exceeded 1500 nmole/cu m for H(+) ions. At these concentrations, an active child might receive more than 2000 nmole of H(+) ion in 12 hr and in excess of 900 nmole during the hour when H2SO4 exceeded 50 microgram/cu m. |
Supplementary Notes |
Pub. in Environmental Health Perspectives, v79 p43-51 1989. Prepared in cooperation with Environmental Health Directorate, Ottawa (Ontario). Sponsored by Health Effects Research Lab., Research Triangle Park, NC. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Exposures to Acidic Aerosols. |
Category Codes |
68A; 68G; 57U |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/10 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
034834537 |
Origin |
NTIS |
Type |
CAT |