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Multiple Gas Flow Ionizers

An ion generator and gas technology, applied in the field of mass analysis, can solve problems such as determination

Active Publication Date: 2022-06-03
PERKINELMER HEALTH SCI CANADA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Existing ionizers typically use a single of these technologies, and each of these technologies suffers from some limitations, such as sensitivity, depending on the analyte to be analyzed

Method used

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Embodiment Construction

[0017] In an embodiment, the ionizer includes a probe having a plurality of coaxially aligned conduits. The catheter can carry fluid

[0019] As shown in FIG. 1, probe 10 is part of ionizer 14. Probe 10 includes three nested tubes 20, 22 and 24,

[0020] The ionizer 14 also includes a housing 26 that interconnects the probe 10 to the downstream mass analyzer 12. optional

[0021] In the embodiment depicted in FIG. 1, each of the tubes 20, 22, and 24 may be formed from a conductive material, with the innermost

[0023] One or more voltage sources 50 may apply relative potentials to the tubes 20, 22, 24 to allow the ionizer 14 to operate at multiple

[0025] For example, the concentration of the analyte in the solution ranging from less than 1 femtogram per μL of solvent to more than 1 microgram per μL of solvent

[0028] The gas G2 may be, for example, air / clean air, nitrogen, or the like.

[0029] The gases G1 and G2 may be maintained at a temperature between about 30°C and 700°...

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Abstract

An ionizer includes a probe having a plurality of coaxially aligned conduits. The conduits can carry liquids as well as atomizing and heated gases at various flow rates and temperatures for ion generation from liquid sources. The outermost conduit defines an entrainment region where ions are transported and entrained in the gas for a defined distance along the length of the conduit. In embodiments, various voltages may be applied to the plurality of conduits to assist ionization and direct ions. Depending on the voltage applied to the plurality of conduits, the ionizer can act as an electrospray, APCI, or APR source. Additionally, the ionizer may include a photon source or a corona ionization source. The formed ions can be provided to a downstream mass analyzer.

Description

Multiple Gas Flow Ionizers technical field [0001] This document relates to mass analysis, and more particularly to ion generation for providing ions for mass analysis , and methods of providing such ions. Background technique [0002] Modern mass analysis / spectroscopy relies on the supply of ionized analytes to downstream mass analyzers. Ionization Analysis The analyte may be provided by an ionizer that converts a non-ionized analyte, typically in a solvent, into a gas-phase ionized analyte. son. Downstream, ions can be separated based on their mass-to-charge ratio, typically by accelerating them and subjecting them to electric or magnetic field. This allows detection and analysis of a wide variety of chemical samples. Mass spectrometry has found a wide variety of applications- It can be used for the detection of unknown compounds or the identification of known compounds. [0004] Known ionization techniques include electron impact (EI); atmospheric pressure che...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/10H01J49/04
CPCH01J49/045H01J49/107H01J49/165H01J49/161H01J49/167H01J49/168H01J49/062H01J49/42
Inventor F.考沙尔G.贾瓦赫里L.卡曾斯C.乔利弗
Owner PERKINELMER HEALTH SCI CANADA INC
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