Figure 5.

(A) Setup used for Biochip Spray MS using a gold biosensor chip held in front of the MS inlet using an alligator clip and (B) spray obtained after adding 10 μL of methanol and applying a voltage of 5 kV. (C) Extracted ion chronogram for m/z 297.1333 ([DON + H]⁺) recorded in positive ion mode, as obtained from four different corners of a single 1 cm² square carboxymethylated dextran (CMD) modified gold chip [133]. (Reprinted from reference [133], Copyright (2017), with permission from American Chemical Society).