Academic
Publications
Influence of the wavelength in high-irradiance ultraviolet laser desorption mass spectrometry of organic molecules

Influence of the wavelength in high-irradiance ultraviolet laser desorption mass spectrometry of organic molecules,10.1021/ac00291a042,Analytical Chem

Influence of the wavelength in high-irradiance ultraviolet laser desorption mass spectrometry of organic molecules   (Citations: 99)
BibTex | RIS | RefWorks Download
The Influence of the wavelength on laser desorptlon of Ions from organlc wilds is exemplified for various amino aclds and dlpeptldes: some absorblng and some nonabsorbing at 266 nm and all nonabsorbing at 355 nm. The presence of cias- slcai absorptlon lowers the threshold irradiance for the de- tectlon of sample-specific Ions and increases the ratlo of molecular-to-fragment Ions. These observations promlse to be of considerable value for future practlcal appllcatlon of laser desorptlon mass spectrometry of organics. The en- hanced ion yield of nonabsorblng molecules In an absorblng matrlx Is presented as an example. Two models for the wavelength influence are discussed, one assumlng a pre- domlnantly resonant one-photon energy transfer for hlghly absorblng samples and the other postulating an Increased Ion yield vla excited states.
Journal: Analytical Chemistry - ANAL CHEM , vol. 57, no. 14, pp. 2935-2939, 1985
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.
Sort by: