Radial arrays of nano-electrospray ionization emitters and methods of forming electrosprays

Patent · Tue Oct 19 00:00:00 EDT 2010

OSTI ID:1016125

Kelly, Ryan T ^[1]; Tang, Keqi ^[2]; Smith, Richard D ^[2]

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1. West Richland, WA
2. Richland, WA

Electrospray ionization emitter arrays, as well as methods for forming electrosprays, are described. The arrays are characterized by a radial configuration of three or more nano-electrospray ionization emitters without an extractor electrode. The methods are characterized by distributing fluid flow of the liquid sample among three or more nano-electrospray ionization emitters, forming an electrospray at outlets of the emitters without utilizing an extractor electrode, and directing the electrosprays into an entrance to a mass spectrometry device. Each of the nano-electrospray ionization emitters can have a discrete channel for fluid flow. The nano-electrospray ionization emitters are circularly arranged such that each is shielded substantially equally from an electrospray-inducing electric field.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• Assignee: Battelle Memorial Institute (Richland, WA)
• Patent Number(s): 7,816,645
• Application Number: 12/046,207
• OSTI ID: 1016125
• Country of Publication: United States
• Language: English