ArticleMass spectrometry (Tokyo, Japan)2025
Click-and-Analyze: Automated Pinpoint Ambient Mass Spectrometry with Sheath-Flow Probe Electrospray Ionization.
Article in Mass spectrometry (Tokyo, Japan), 2025. 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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4 authors.
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Abstract
We report a robotic sheath-flow probe electrospray ionization mass spectrometry system with a new probe design and automated positioning capabilities for pinpoint ambient mass spectrometry. The system integrates a 3-axis Cartesian robot with two cameras: a fixed global camera for coarse positioning and a movable local camera for fine alignment, enabling users to designate sampling spots by mouse-clicking on live images displayed on the graphical user interface. A microcontroller is used for voltage control, current monitoring, and the detection of probe-sample contact. Sampling, transfer, ionization, and cleaning are fully automated under computer control, and the sheath liquid is supplied by a programmable syringe pump to maintain a stable flow rate. The system successfully analyzed aqueous standards, beverages, and water-rich soft materials such as jelly and fruit slices, yielding stable ion signals with negligible carry-over between measurements.
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