Distributions of Indoor and Outdoor Air Pollutants in Rio de Janeiro, Brazil: Implications to Indoor Air Quality in Bayside Offices
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- 作者：Leila S. R. Brickus ; Jari N. Cardoso ; and Francisco R. de Aquino Neto
- 刊名：Environmental Science & Technology
- 出版年：1998
- 出版时间：November 15, 1998
- 年：1998
- 卷：32
- 期：22
- 页码：3485 - 3490
- 全文大小：68K
- 年卷期：v.32,no.22(November 15, 1998)
- ISSN：1520-5851
文摘
An indoor air quality survey was conducted on selectedfloors in an office building in Rio de Janeiro, Brazil. Thesampling sites comprised four offices located along the samevertical column of the building. Measurements weremade on alternate days at the same time of day duringworking hours. Indoor and outdoor samples were collectedfor volatile organic compounds (VOC), formaldehyde,total suspended particles (TSP), nicotine, and ultravioletrespirable suspended particles (UV-RSP). Compared withformaldehyde, acetaldehyde was found in higher concentrations outdoors because of the use of ethanol or ethanol/gasoline blends as alternative fuels for automobiles inBrazil. The TVOC concentration ranged from 304.3 to 1679.9
r.gif">g/m3 indoors and 22 to 643.2 r.gif">g/m3 outdoors. Theindoor level of total volatile organic compounds (TVOC)was especially high in the 13th floor office. A minorcontribution from environmental tobacco smoke was found.TSP values exceed the Brazilian Legislation (80 r.gif">g/m3) inboth outdoor and indoor air in the office located near thestreet traffic. For all pollutants evaluated I/O ratiosappeared to be higher in offices located on the top of thebuilding. The characterization of indoor air pollutantsallowed the suggestion of several remediation measuresto improve air quality in the offices.
r.gif">g/m3 indoors and 22 to 643.2 r.gif">g/m3 outdoors. Theindoor level of total volatile organic compounds (TVOC)was especially high in the 13th floor office. A minorcontribution from environmental tobacco smoke was found.TSP values exceed the Brazilian Legislation (80 r.gif">g/m3) inboth outdoor and indoor air in the office located near thestreet traffic. For all pollutants evaluated I/O ratiosappeared to be higher in offices located on the top of thebuilding. The characterization of indoor air pollutantsallowed the suggestion of several remediation measuresto improve air quality in the offices.