VACUUM ELECTRO-SPRAY ION SOURCE AND MASS SPECTROMETER
First Claim
1. A vacuum electro-spray ion source, comprising:
- a hollow capillary, a vacuum cavity, a gas inlet pipe, a gas supply device and an adjusting device, wherein a first end of the hollow capillary is a sampling port, and a second end is used as a spray nozzle for vacuum electro-sprays and stretches into the vacuum cavity;
the air pressure in the vacuum cavity is ranged from 10−
4 to 200 Pa;
one end of the gas inlet pipe stretches into the vacuum cavity, and the other end is connected with the gas supply device; and
the adjusting device is configured for adjusting the gas inlet pipe to allow the gas to flow therein intermittently.
1 Assignment
0 Petitions
Accused Products
Abstract
The vacuum electro-spray ion source comprises a hollow capillary, a vacuum cavity, a gas inlet pipe, a gas supply device and an adjusting device, wherein a first end of the hollow capillary is a sampling port, and a second end is used as a spray nozzle for vacuum electro-sprays and stretches into the vacuum cavity; the air pressure in the vacuum cavity is ranged from 10 to 200 Pa; one end of the gas inlet pipe stretches into the vacuum cavity, and the other end is connected with the gas supply device; and the adjusting device is configured for adjusting the gas inlet pipe to allow the gas to flow therein intermittently. The ion source may achieve electro-spray ionization in the vacuum environment, so that losses during ion transmission may be reduced to improve the signal intensity and detection limit during detection.
12 Citations
10 Claims
-
1. A vacuum electro-spray ion source, comprising:
- a hollow capillary, a vacuum cavity, a gas inlet pipe, a gas supply device and an adjusting device, wherein a first end of the hollow capillary is a sampling port, and a second end is used as a spray nozzle for vacuum electro-sprays and stretches into the vacuum cavity;
the air pressure in the vacuum cavity is ranged from 10−
4 to 200 Pa;
one end of the gas inlet pipe stretches into the vacuum cavity, and the other end is connected with the gas supply device; and
the adjusting device is configured for adjusting the gas inlet pipe to allow the gas to flow therein intermittently. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a hollow capillary, a vacuum cavity, a gas inlet pipe, a gas supply device and an adjusting device, wherein a first end of the hollow capillary is a sampling port, and a second end is used as a spray nozzle for vacuum electro-sprays and stretches into the vacuum cavity;
Specification