Ionizer and mass spectrometer
First Claim
1. An ionizer, comprising:
- a nebulizer configured to eject a liquid sample into atmosphere at atmospheric pressure to form a nebulized flow of the liquid sample;
an electroconductive capillary disposed at a position forward in a flow direction of the nebulized flow formed by the nebulizer;
a liquid supply configured to provide a liquid through the electroconductive capillary; and
a power supply configured to apply a voltage to the electroconductive capillary, whereinthe nebulizer includes;
a nozzle configured to eject the liquid sample; and
a heater configured to dry the liquid sample ejected through the nozzle, andfirst components in the liquid sample are ionized by atmospheric pressure chemical ionization through corona discharge generated by the voltage applied to the electroconductive capillary by the power supply.
1 Assignment
0 Petitions
Accused Products
Abstract
An ionizer includes an ionization probe (21) provided with a capillary (211), a metallic slender tube (212), and a nebulizing gas pipe (213). The ionization probe (21) is equipped to perform ESI-based ionization of components in a liquid sample. An electroconductive capillary (22) is disposed at a position forward in a flow direction of a nebulized flow of the liquid sample from the ionization probe (21). A high voltage from a high voltage power supply (23) is applied to the electroconductive capillary (22) to induce corona discharge so that the components in the liquid sample are ionized by the APCI as well. At the time of tuning the ionizer, a standard sample solution is provided through the electroconductive capillary (22), and a high voltage from the high voltage power supply (23) is applied to the electroconductive capillary (22) so that components in the standard sample solution are ionized by the ESI or due to an ion molecular reaction with solvent molecular ions produced in the ionization probe (21). Thus, components in a standard sample can be ionized and subjected to mass spectrometry without pipe rearranging operations or without switch to and from different flow paths using a valve.
12 Citations
14 Claims
-
1. An ionizer, comprising:
-
a nebulizer configured to eject a liquid sample into atmosphere at atmospheric pressure to form a nebulized flow of the liquid sample; an electroconductive capillary disposed at a position forward in a flow direction of the nebulized flow formed by the nebulizer; a liquid supply configured to provide a liquid through the electroconductive capillary; and a power supply configured to apply a voltage to the electroconductive capillary, wherein the nebulizer includes; a nozzle configured to eject the liquid sample; and a heater configured to dry the liquid sample ejected through the nozzle, and first components in the liquid sample are ionized by atmospheric pressure chemical ionization through corona discharge generated by the voltage applied to the electroconductive capillary by the power supply. - View Dependent Claims (2, 3)
-
-
4. An ionizer, comprising:
-
a nebulizer configured to eject a liquid sample into atmosphere at atmospheric pressure to form a nebulized flow of the liquid sample; an electroconductive capillary disposed at a position forward in a flow direction of the nebulized flow formed by the nebulizer; a liquid supply configured to provide a liquid through the electroconductive capillary; and a power supply configured to apply a voltage to the electroconductive capillary, wherein the nebulizer includes; an electric field power supply configured to form a biased electric field that acts upon the liquid sample; and a nozzle configured to eject the nebulized flow of the liquid sample electrically charged by the electric field, and first components in the liquid sample are ionized by electrospray ionization and also ionized by atmospheric pressure chemical ionization through corona discharge generated by the voltage applied to the electroconductive capillary by the power supply. - View Dependent Claims (5, 6, 7)
-
-
8. An ionizer, comprising:
-
a nebulizer configured to eject a liquid sample into atmosphere at atmospheric pressure to form a nebulized flow of the liquid sample; an electroconductive capillary disposed at a position forward in a flow direction of the nebulized flow formed by the nebulizer; a gas supply configured to provide a gas through the electroconductive capillary; and a power supply configured to apply a voltage to the electroconductive capillary, wherein the nebulizer includes; a nozzle configured to eject the liquid sample; and a heater configured to dry the liquid sample ejected through the nozzle, and first components in the liquid sample are ionized by atmospheric pressure chemical ionization through corona discharge generated by the voltage applied to the electroconductive capillary by the power supply. - View Dependent Claims (9)
-
-
10. An ionizer, comprising:
-
a nebulizer configured to eject a liquid sample into atmosphere at atmospheric pressure to form a nebulized flow of the liquid sample; an electroconductive capillary disposed at a position forward in a flow direction of the nebulized flow formed by the nebulizer; a gas supply configured to provide a gas through the electroconductive capillary; and a power supply configured to apply a voltage to the electroconductive capillary, wherein the nebulizer includes; an electric field power supply configured to form a biased electric field that acts upon the liquid sample; and a nozzle configured to eject the nebulized flow of the liquid sample electrically charged by the electric field, and first components in the liquid sample are ionized by electrospray ionization and also ionized by atmospheric pressure chemical ionization through corona discharge generated by the voltage applied by the power supply to the electroconductive capillary. - View Dependent Claims (11, 12, 13, 14)
-
Specification