Indoor and outdoor concentrations of inorganic acidic aerosols and gases
Brauer, M; Koutrakis, P; Keeler, GJ; Spengler, JD
HERO ID
37871
Reference Type
Journal Article
Year
1991
Language
English
PMID
| HERO ID | 37871 |
|---|---|
| In Press | No |
| Year | 1991 |
| Title | Indoor and outdoor concentrations of inorganic acidic aerosols and gases |
| Authors | Brauer, M; Koutrakis, P; Keeler, GJ; Spengler, JD |
| Journal | Journal of the Air and Waste Management Association |
| Volume | 41 |
| Issue | 2 |
| Page Numbers | 171-181 |
| Abstract | Annular denuder-filter pack sampling systems were used to make indoor and outdoor measurements of aerosol strong H+, SO4(2)-, NH4+, NO3- and NO2-, and the gaseous pollutants SO2, HNO3, HONO and NH3 during summer and winter periods in Boston, Massachusetts. Outdoor levels of SO2, HNO3, H+ and SO4(2-) exceeded their indoor concentrations during both seasons. Winter indoor/outdoor ratios were lower than during the summer, probably due to lower air exchange rates during the winter period. During both monitoring periods, indoor/outdoor ratios of aerosol strong H+ were 40-50 percent of the indoor/outdoor SO4(2-) ratio. Since aerosol strong acidity is typically associated with SO4(2-), this finding is indicative of neutralization of the acidic aerosol by the higher indoor NH3 levels. Geometric mean indoor/outdoor NH3 ratios of 3.5 and 23 respectively were measured for the summer and winter sampling periods. For HONO, NH3, NH4+ and NO2-, indoor concentrations were significantly higher than ambient levels. Indoor levels of NO3- were slightly less than outdoor concentrations. |
| Doi | 10.1080/10473289.1991.10466834 |
| Pmid | 2054163 |
| Wosid | WOS:A1991EY53800008 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | J. Air Waste Manage. Assoc. 41: 171-181. |
| Is Public | Yes |
| Language Text | English |
| Is Qa | No |