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Attenuated total reflectance (ATR) FTIR

An infrared spectroscopy configuration where the IR beam passes through an ATR crystal and generates an evanescent wave that samples a thin surface layer of the pressed sample. Enables direct contact measurement of solid and liquid explosives and precursors.

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Related terms

Diphenylamine (DPA) testExplosive-detection canine (EDC)Fluorescence interferenceGriess testIon mobility spectrometry (IMS)J-acid test (Janovsky-type)Presumptive testRaman spectroscopyReduced mobility (K0)

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