Patent · US Active

Liquid junction apparatus for electrospray ionization

US10593532B2 · kind B2 · utility

1Cited by

2References

20Claims

0Family size

Inventors

Christoph Gebhardt · Bremen, DE
Peter Aagaard Nielsen · Marslev, DK
Ralph Kikillus · Bremen, DE
Christian Meier-Credo · Bremen, DE

Key dates

Filing date	Feb 18, 2019
Grant date	Mar 17, 2020
Priority date	—
Expiry date	Feb 18, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/26
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a liquid junction apparatus for electrospray ionization in a mass spectrometer comprising an electrospray emitter, a capillary conduit assembly for conducting liquid to be electrosprayed, and a union comprising an electrically conductive material, in which the electrospray emitter and the capillary conduit assembly are accommodated in a bottom-sealing butt joint featuring low dead volume while retaining at least one of them pluggable and withdrawable. The liquid junction apparatus facilitates energizing the transmitted liquid to a predetermined voltage level at the liquid junction upstream of an actual emitter tip where electrospraying occurs, while retaining at least one of an electrospray emitter and a capillary conduit assembly pluggable into and withdrawable from a union that comprises a conductive material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.