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Extracted ion profile (EIP)

A GC-MS chromatographic display plotting only ions of a specified m/z value against retention time, effectively filtering out all compounds that do not produce that ion. Used in ASTM E1618 to isolate aromatic compounds (m/z 91, 105, 119) and n-alkanes (m/z 57) from complex fire debris matrices.

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ASTM E1618Ignitable liquidUnresolved complex mixture (UCM)ASTM E1387 / E1618Carbon disulfide (CS2)DB-5 columnEvaporative weatheringIgnitable Liquid Reference Collection (ILRC)Isoparaffinic productsLight petroleum distillate (LPD)OSAC (fire and explosion)Passive headspace charcoal-strip extraction

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