Volume 8, Issue 9 (October 2011)

    Application of ASTM Standard Practice D6602 in the Investigation of Outdoor Environmental Surface Particulate Including Darkening Agents

    (Received 25 October 2010; accepted 14 July 2011)

    Published Online: 2011

    CODEN: JAIOAD

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    Abstract

    ASTM D6602 “Standard Practice for Sampling and Testing of Possible Carbon Black Fugitive Emissions or Other Environmental Particulate, or Both” was developed for the investigation of outdoor sooty surface problems and distinguishing manufactured carbon black, in the N100 to N900 series, from other environmental particulates. It is a microscopy technique that is well suited for the study of darkening agent complaints. Samples are collected from surfaces with cotton balls, wipes, and tape-lifts. The particulate is then analyzed by light microscopy and electron microscopy. The practice is used as a means to differentiate between darkening caused by fungal growth (biofilms), soots, or other dark particles. Polarized light microscopy provides information about the relative amounts of the different types of particles present and some information about the type of biofilm, if present. Transmission electron microscopy provides confirmation of aciniform soot, if present, and some information about the possible source of the soot. An investigation of dark surface particulate in a city where both a carbon black manufacturing facility and an oil refinery were possible industrial sources provides an illustration of the use of the method.


    Author Information:

    Millette, James R.
    MVA Scientific Consultants, Duluth,

    Rook, Harry L.

    Compton, Steven
    MVA Scientific Consultants,


    Stock #: JAI103523

    ISSN: 1546-962X

    DOI: 10.1520/JAI103523

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    Author
    Title Application of ASTM Standard Practice D6602 in the Investigation of Outdoor Environmental Surface Particulate Including Darkening Agents
    Symposium Surface and Dermal Sampling, 2010-10-15
    Committee D22