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United States Department of Agriculture

Agricultural Research Service

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Image Number K11459-1

Technician Kenwood Scoggin prepares particulate-filter samples for microwave-assisted extraction as part of the liquid chromatography/mass spectrometer process to identify materials attached to particulates collected in rural Iowa.

Photo by Peggy Greb.

640 pixels wide: (k11459-1.jpg)

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Last Modified: 8/12/2016
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