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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Bioanalysis. 2014 Jun;6(11):1497–1508. doi: 10.4155/bio.14.100

Figure 1. Examples of ambient ionization methods and miniature mass spectrometers.

Figure 1

(A) Desorption electrospray ionization (DESI) and (B) paper spray ionization, two of many ambient ionization methods. (C) Configuration of a miniature MS with a discontinuous atmospheric pressure interface and a miniature pumping system. (D) Mini 11 handheld MS that can be used for analysis of biological compounds from condensed phase samples.

DAPI: Discontinuous atmospheric pressure interface; HV: High voltage; RIT: Rectilinear ion trap.

(A, B, C & D) are reproduced with permission from [7,8,12,13], respectively.