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. Author manuscript; available in PMC: 2013 Mar 7.
Published in final edited form as: Chem Commun (Camb). 2011 Feb 1;47(10):2811–2813. doi: 10.1039/c0cc05513a

Fig. 2.

Fig. 2

Paper spray mass spectra of analytes deposited on paper wetted with n-hexane. (a) Angiotensin III (500 ng), mass spectrum and MS/MS product ion spectrum of (M + 2H)+ ion. (b) Nicotinamide adenine dinucleotide (500 ng); insets are isotopic distribution of molecular ion and MS/MS spectrum of the (M – H)− ion. (c) 1-Palmitoyl-2-glutaryl-sn-glycero-3-phosphocholine (500 ng); insets are isotopic distribution of molecular ion and MS/MS spectrum of the (M – H)− ion. (See ESI†, Fig. S5 for positive ion mode spectrum.) (d) Cholesterol sulfate (3 ng), insets are isotopic distribution of molecular ion and MS/MS spectrum of the (M – H)− ion.