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This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

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aboideaux

aceriphyllum rossii engl.

acid catalyzed cleavage

afferent cranial nerves

agilent

Al Fayyūm

angulate drainage pattern