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Title: Electrospray ion source with reduced analyte electrochemistry

Abstract

An electrospray ion (ESI) source and method capable of ionizing an analyte molecule without oxidizing or reducing the analyte of interest. The ESI source can include an emitter having a liquid conduit, a working electrode having a liquid contacting surface, a spray tip, a secondary working electrode, and a charge storage coating covering partially or fully the liquid contacting surface of the working electrode. The liquid conduit, the working electrode and the secondary working electrode can be in liquid communication. The electrospray ion source can also include a counter electrode proximate to, but separated from, said spray tip. The electrospray ion source can also include a power system for applying a voltage difference between the working electrodes and a counter-electrode. The power system can deliver pulsed voltage changes to the working electrodes during operation of said electrospray ion source to minimize the surface potential of the charge storage coating.

Inventors:
 [1];  [2]
  1. Knoxville, TN
  2. Clinton, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1023959
Patent Number(s):
8003937
Application Number:
12/237,892
Assignee:
UT-Battelle (Oak Ridge, TN)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
DOE Contract Number:  
ERK CC-42
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Kertesz, Vilmos, and Van Berkel, Gary. Electrospray ion source with reduced analyte electrochemistry. United States: N. p., 2011. Web.
Kertesz, Vilmos, & Van Berkel, Gary. Electrospray ion source with reduced analyte electrochemistry. United States.
Kertesz, Vilmos, and Van Berkel, Gary. Tue . "Electrospray ion source with reduced analyte electrochemistry". United States. https://www.osti.gov/servlets/purl/1023959.
@article{osti_1023959,
title = {Electrospray ion source with reduced analyte electrochemistry},
author = {Kertesz, Vilmos and Van Berkel, Gary},
abstractNote = {An electrospray ion (ESI) source and method capable of ionizing an analyte molecule without oxidizing or reducing the analyte of interest. The ESI source can include an emitter having a liquid conduit, a working electrode having a liquid contacting surface, a spray tip, a secondary working electrode, and a charge storage coating covering partially or fully the liquid contacting surface of the working electrode. The liquid conduit, the working electrode and the secondary working electrode can be in liquid communication. The electrospray ion source can also include a counter electrode proximate to, but separated from, said spray tip. The electrospray ion source can also include a power system for applying a voltage difference between the working electrodes and a counter-electrode. The power system can deliver pulsed voltage changes to the working electrodes during operation of said electrospray ion source to minimize the surface potential of the charge storage coating.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {8}
}

Patent:

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