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    The Relationships between Indoor and Outdoor Respirable Particulate Matter: Meteorology, Chemistry and Personal Exposure

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    Authors
    Shilton, Vaughan F.
    Giess, Paul
    Mitchell, David J.
    Williams, Craig D.
    Issue Date
    2002
    
    Metadata
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    Abstract
    Respirable particulate matter was collected inside and outside of a building located in Wolverhampton city centre during the same time period between 19/9/00 and 1/5/01. A total of 103 pairs of indoor and outdoor mea surements were made using Casella personal dust moni tors. The building monitored was located in a small street canyon produced by 4- and 5-storey buildings on both sides of the road. The road is the main approach road to a major bus station and is used by large numbers of heavy-duty diesel vehicles each day. The mean con centration for outdoor samples was 27.6 and 9.8 µg.m-3 for indoor samples. The mean indoor/outdoor ratio for this period was 0.4 (±0.02 SE). Meteorological variables including wind speed, wind direction and precipitation were measured at a nearby urban monitoring station. A greater wind speed caused an increase in the quantity of outdoor generated particulates penetrating indoors. Wind direction affected both indoor and outdoor particu late concentrations, with lower concentrations being ob served when the wind direction was parallel to the street canyon. The indoor/outdoor ratio also showed a de crease during parallel wind conditions. During days with high amounts of precipitation, the concentration of par ticulates, both indoors and outdoors, decreased signifi cantly. The personal exposure of a building occupant was measured for 20 working days in conjunction with outdoor and indoor measurements. Personal exposure concentrations were well correlated with indoor concen trations (r2 = 0.98). Forty of the indoor and outdoor partic ulate samples of dust were chemically analysed for sul phate, nitrate, chloride, zinc, copper, manganese and aluminium to determine any indoor/outdoor relation ships of particulate chemistry and any interrelationships between the analytes. (Sage Publications)
    Citation
    Indoor and Built Environment, 11(5): 266-274
    Publisher
    Sage Publications
    Journal
    Indoor and Built Environment
    URI
    http://hdl.handle.net/2436/29360
    DOI
    10.1159/000066526
    Additional Links
    http://ibe.sagepub.com/cgi/content/abstract/11/5/266
    Type
    Journal article
    Language
    en
    ISSN
    1420326X
    14230070
    ae974a485f413a2113503eed53cd6c53
    10.1159/000066526
    Scopus Count
    Collections
    Faculty of Science and Engineering

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