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Outdoor Versus Indoor Contributions to Indoor Particulate Matter (PM) Determined by Mass Balance Methods
This study compares an indoor-outdoor air-exchange mass balance model (IO model) with a chemical mass balance (CMB) model. The models were used to determine the contribution of outdoor sources and indoor resuspension activities to indoor particulate matter (PM) concentrations. Simultaneous indoor an...
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| Published in: | Journal of the Air & Waste Management Association (1995) 2004-09, Vol.54 (9), p.1188-1196 |
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| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c453t-1b1d32a7e58650c45ad6ad6a55de7cfa48e2c4d599ac09896145072d582ff8003 |
| container_end_page | 1196 |
| container_issue | 9 |
| container_start_page | 1188 |
| container_title | Journal of the Air & Waste Management Association (1995) |
| container_volume | 54 |
| creator | Kopperud, Royal J. Ferro, Andrea R. Hildemann, Lynn M. |
| description | This study compares an indoor-outdoor air-exchange mass balance model (IO model) with a chemical mass balance (CMB) model. The models were used to determine the contribution of outdoor sources and indoor resuspension activities to indoor particulate matter (PM) concentrations. Simultaneous indoor and outdoor measurements of PM concentration, chemical composition, and air-exchange rate were made for five consecutive days at a single-family residence using particle counters, neph-elometers, and filter samples of integrated PM with an aerodynamic diameter of less than or equal to 2.5 μm (PM
2.5
) and PM with an aerodynamic diameter of less than or equal to 5 μm (PM
5
). Chemical compositions were determined by inductively coupled plasma mass-spectrometry. During three high-activity days, prescribed activities, such as cleaning and walking, were conducted over a period of 4-6 hr. For the remaining two days, indoor activities were minimal. Indoor sources accounted for 60-89% of the PM
2.5
and more than 90% of the PM
5
for the high-activity days. For the minimal-activity days, indoor sources accounted for 27-47% of PM
2.5
and 44-60% of the PM
5
. Good agreement was found between the two mass balance methods. Indoor PM
2.5
originating outdoors averaged 53% of outdoor concentrations. |
| doi_str_mv | 10.1080/10473289.2004.10470983 |
| format | article |
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2.5
) and PM with an aerodynamic diameter of less than or equal to 5 μm (PM
5
). Chemical compositions were determined by inductively coupled plasma mass-spectrometry. During three high-activity days, prescribed activities, such as cleaning and walking, were conducted over a period of 4-6 hr. For the remaining two days, indoor activities were minimal. Indoor sources accounted for 60-89% of the PM
2.5
and more than 90% of the PM
5
for the high-activity days. For the minimal-activity days, indoor sources accounted for 27-47% of PM
2.5
and 44-60% of the PM
5
. Good agreement was found between the two mass balance methods. Indoor PM
2.5
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2.5
) and PM with an aerodynamic diameter of less than or equal to 5 μm (PM
5
). Chemical compositions were determined by inductively coupled plasma mass-spectrometry. During three high-activity days, prescribed activities, such as cleaning and walking, were conducted over a period of 4-6 hr. For the remaining two days, indoor activities were minimal. Indoor sources accounted for 60-89% of the PM
2.5
and more than 90% of the PM
5
for the high-activity days. For the minimal-activity days, indoor sources accounted for 27-47% of PM
2.5
and 44-60% of the PM
5
. Good agreement was found between the two mass balance methods. Indoor PM
2.5
originating outdoors averaged 53% of outdoor concentrations.</description><subject>Air Movements</subject><subject>Air Pollutants - analysis</subject><subject>Air Pollution, Indoor - analysis</subject><subject>Airborne particulates</subject><subject>Applied sciences</subject><subject>Environmental engineering</subject><subject>Environmental Monitoring</subject><subject>Exact sciences and technology</subject><subject>Indoor air quality</subject><subject>Mass balance models</subject><subject>Models, Theoretical</subject><subject>Outdoor air quality</subject><subject>Particle 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Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>This study compares an indoor-outdoor air-exchange mass balance model (IO model) with a chemical mass balance (CMB) model. The models were used to determine the contribution of outdoor sources and indoor resuspension activities to indoor particulate matter (PM) concentrations. Simultaneous indoor and outdoor measurements of PM concentration, chemical composition, and air-exchange rate were made for five consecutive days at a single-family residence using particle counters, neph-elometers, and filter samples of integrated PM with an aerodynamic diameter of less than or equal to 2.5 μm (PM
2.5
) and PM with an aerodynamic diameter of less than or equal to 5 μm (PM
5
). Chemical compositions were determined by inductively coupled plasma mass-spectrometry. During three high-activity days, prescribed activities, such as cleaning and walking, were conducted over a period of 4-6 hr. For the remaining two days, indoor activities were minimal. Indoor sources accounted for 60-89% of the PM
2.5
and more than 90% of the PM
5
for the high-activity days. For the minimal-activity days, indoor sources accounted for 27-47% of PM
2.5
and 44-60% of the PM
5
. Good agreement was found between the two mass balance methods. Indoor PM
2.5
originating outdoors averaged 53% of outdoor concentrations.</abstract><cop>Pittsburgh, PA</cop><pub>Taylor & Francis Group</pub><pmid>15468671</pmid><doi>10.1080/10473289.2004.10470983</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1096-2247 |
| ispartof | Journal of the Air & Waste Management Association (1995), 2004-09, Vol.54 (9), p.1188-1196 |
| issn | 1096-2247 2162-2906 |
| language | eng |
| recordid | cdi_proquest_journals_214375688 |
| source | Taylor and Francis Science and Technology Collection |
| subjects | Air Movements Air Pollutants - analysis Air Pollution, Indoor - analysis Airborne particulates Applied sciences Environmental engineering Environmental Monitoring Exact sciences and technology Indoor air quality Mass balance models Models, Theoretical Outdoor air quality Particle Size Pollution |
| title | Outdoor Versus Indoor Contributions to Indoor Particulate Matter (PM) Determined by Mass Balance Methods |
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