technique by which a mixture is separated into individual components by gas chromatography, followed by detection with a mass spectrometer, two techniques that are combined to form a single method of analyzing mixtures of chemicals, instrumentaalanalüüsi kombineeritud meetod, mille puhul proovi komponendid esmalt lahutatakse gaasikromatograafilises seadmes ja kolonni väljunud sisestatakse väga lühikeste intervallidega massispektromeetrisse