Figure 48. Non-linear map (stress 4.2%) of the pyrolysis mass spectra of air particulates collected at various discrete sources ("Power plant" is a coal-fired power plant; "Hanksville I" is a desert sample; "Hanksville II" is a sample taken two days later at the same location; "Blank" is a sample of clean, unused quartz filter).

reference particulates. In principle, this technique might also be extended to the characterisation of organic particulates generated in fires, e.g. for the purpose of assessing the chemical nature of substances inhaled by firefighters.

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