Gold nanoparticle-enhanced target (AuNPET) as universal solution for laser desorption/ionization mass spectrometry analysis and imaging of low molecular weight compounds.
Preparation is described of a durable surface of cationic gold nanoparticles (AuNPs), covering commercial and custom-made MALDI targets, along with characterization of the nanoparticle surface properties and examples of the use in MS analyses and MS imaging (IMS) of low molecular weight (LMW) organic compounds. Tested compounds include nucleosides, saccharides, amino acids, glycosides, and nucleic bases for MS measurements, as well as over one hundred endogenous compounds in imaging experiment. The nanoparticles covering target plate were enriched in sodium in order to promote sodium-adduct formation. The new surface allows fast analysis, high sensitivity of detection and high mass determination accuracy. Example of application of new Au nanoparticle-enhanced target for fast and simple MS imaging of a fingerprint is also presented.
Rzeszów University of Technology, Faculty of Chemistry, Bioorganic Chemistry Laboratory, 6 Powstańców Warszawy Ave., 35-959 Rzeszów, Poland.
Justyna
J
Sekuła
Rzeszów University of Technology, Faculty of Chemistry, Bioorganic Chemistry Laboratory, 6 Powstańców Warszawy Ave., 35-959 Rzeszów, Poland.
Joanna
J
Nizioł
Nencki Institute of Experimental Biology, 3 Pasteur Street, 02-093 Warsaw, Poland.
Wojciech
W
Rode
Rzeszów University of Technology, Faculty of Chemistry, Bioorganic Chemistry Laboratory, 6 Powstańców Warszawy Ave., 35-959 Rzeszów, Poland. Electronic address: tomruman@prz.edu.pl.
Tomasz
T
Ruman
D000596:Amino Acids / Q000032:analysis; D003878:Dermatoglyphics; D006027:Glycosides / Q000032:analysis; D006046:Gold / Q000737:chemistry*; D006801:Humans; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D009705:Nucleosides / Q000032:analysis; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*; D013499:Surface Properties
D000596:Amino Acids; D006027:Glycosides; D009705:Nucleosides; D006046:Gold
Gold nanoparticles; Low molecular weight compounds; MALDI; Mass spectrometry; Matrix; Matrix-assisted laser desorption/ionization; Matrix-free LDI; Matrixless LDI; Nanoparticles; SALDI