Abstract:Abstract. Development of small, field-portable mass spectrometers has enabled a rapid growth of in-field measurements on mobile platforms. In such in-field measurements, unexpected signal variability has been observed by the authors in portable ion traps with internal electron ionization. The orientation of magnetic fields (such as the Earth's) relative to the ionization electron beam trajectory can significantly alter the electron flux into a quadrupole ion trap, resulting in significant changes in the instru… Show more
Full scan mass spectrometry data collected from a moving vehicle used to discriminate and map sources of volatile organic compounds using principal component analysis.
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