Articles with "negative modes" as a keyword



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Comparison of the positive and negative modes of corona discharge ion source for direct determination of aspirin in urine by ion mobility spectrometry

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Published in 2021 at "International Journal of Mass Spectrometry"

DOI: 10.1016/j.ijms.2021.116699

Abstract: Abstract Ionization of aspirin (A) in positive and negative modes of a corona discharge (CD) ion source was studied by ion mobility spectrometry (IMS). The IMS spectra showed that aspirin can be both protonated, AH+,… read more here.

Keywords: positive negative; spectrometry; negative modes; ion ... See more keywords
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Rapid Screening and Quantitation of Drugs of Abuse by Both Positive and Negative Modes via Coated Blade Spray-Mass Spectrometry.

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Published in 2022 at "Journal of the American Society for Mass Spectrometry"

DOI: 10.1021/jasms.2c00040

Abstract: Solid-phase microextraction (SPME)-direct mass spectrometry (MS) has proven to be an efficient tool for the rapid screening and quantitation of target compounds at trace levels. However, it is challenging to perform screening using both positive… read more here.

Keywords: mass spectrometry; coated blade; negative modes; positive negative ... See more keywords