A spark-induced breakdown spectroscopy apparatus (100) having a housing (105) with an inlet (110) and an outlet (115) that define an analyte flow path (120). A laser (280) defines a laser pathway (289) generally transverse to an intersecting the analyte flow path (120). A pair of electrodes (220), which have insulating shields (270), are mounted within the housing (105) and define a spark path (250). An optical detection element (125) defines an optical path (130). The apparatus (100) can be used to identify an aerosolized analyte.
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