ArticleSpectrochimica acta. Part B, Atomic spectroscopy2026
Comparison of scandium-based post-plasma chemical ionization approaches for elemental fluorine detection by nitrogen microwave-sustained inductively-coupled atmospheric-pressure plasma.
Article in Spectrochimica acta. Part B, Atomic spectroscopy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Fluorine detection has been a challenge in elemental mass spectrometry because of inefficient ion generation. Polyatomic analytical ion formation has emerged as a promising strategy to address this limitation. Here, we compare several post-plasma ion-neutral reactions that leverage affinity between scandium and F atoms to form analytical ions. A nitrogen microwave-sustained inductively-coupled atmospheric-pressure plasma (MICAP) is utilized to decompose fluorochemicals. The plasma products are sampled into an interface designed to minimize their adsorption to the surfaces, and are ionized in two main ways: 1) by scandium-containing ions generated using nano-electrospray ionization (nESI); 2) by addition of scandium to the plasma coupled with a post-MICAP corona discharge. Both avenues are also evaluated in positive- and negative-ion modes, producing ions such as ScFNO
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