Introducing Samples Directly into Electrospray Ionization Mass Spectrometers by Direct Infusion Using a Nanoelectrospray Interface

2013 ◽  
Vol 74 (1) ◽  
Author(s):  
Terry D. Lee ◽  
Roger E. Moore ◽  
Denise Keen
Keyword(s):  
Electrospray Ionization ◽  
Ionization Mass ◽  
Direct Infusion ◽  
Mass Spectrometers

scholarly journals Additional New Tetracyclic Tetraterpenoid: Methyl Tortuoate D from Soft Coral Sarcophyton tortuosum

2009 ◽  
Vol 4 (9) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Wen-Jian Lan ◽  
Shou-Liang Wang ◽  
Hou-Jin Li
Keyword(s):  
Mass Spectrometry ◽  
South China Sea ◽  
Electrospray Ionization ◽  
South China ◽  
Soft Coral ◽  
2D Nmr ◽  
Ionization Mass ◽  
Spectroscopic Techniques ◽  
Direct Infusion ◽  
Relative Stereochemistry

Under the guidance of chemical prescreening by direct infusion electrospray ionization mass spectrometry (DI ESI-MS), a new tetracyclic tetraterpenoid, methyl tortuoate D (1) was isolated from the soft coral Sarcophyton tortuosum collected from the South China Sea. Its structure and relative stereochemistry were established by MS, and 1D- and 2D-NMR spectroscopic techniques.

Biodiesel Typification and Quality Control by Direct Infusion Electrospray Ionization Mass Spectrometry Fingerprinting

2007 ◽  
Vol 21 (6) ◽  
pp. 3698-3701 ◽  
Author(s):  
Rodrigo R. Catharino ◽  
Humberto M. S. Milagre ◽  
Sergio A. Saraiva ◽  
Camila M. Garcia ◽  
Ulf Schuchardt ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Quality Control ◽  
Electrospray Ionization ◽  
Electrospray Ionization Mass Spectrometry ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Direct Infusion

scholarly journals Observation of charged droplets from electrospray ionization (ESI) plumes in API mass spectrometers

2021 ◽  
Author(s):  
Clara Markert ◽  
Marco Thinius ◽  
Laura Lehmann ◽  
Chris Heintz ◽  
Florian Stappert ◽  
...  
Keyword(s):  
Electrospray Ionization ◽  
Mass Spectrometer ◽  
Strong Electric Field ◽  
Ion Source ◽  
Mass Analyzer ◽  
Ionization Mass ◽  
Inlet System ◽  
Mass Spectrometers ◽  
Charged Droplets ◽  
Pass Through

AbstractElectrospray ionization (ESI) generates bare analyte ions from charged droplets, which result from spraying a liquid in a strong electric field. Experimental observations available in the literature suggest that at least a significant fraction of the initially generated droplets remain large, have long lifetimes, and can thus aspirate into the inlet system of an atmospheric pressure ionization mass spectrometer (API-MS). We report on the observation of fragment signatures from charged droplets penetrating deeply the vacuum stages of three commercial mass spectrometer systems with largely different ion source and spray configurations. Charged droplets can pass through the ion source and pressure reduction stages and even into the mass analyzer region. Since droplet signatures were found in all investigated instruments, the incorporation of charged droplets is considered a general phenomenon occurring with common spray conditions in ESI sources.

Benzhydrylpyridinium Ions: A New Class of Thermometer Ions for the Characterization of Electrospray-Ionization Mass Spectrometers

2019 ◽  
Vol 91 (18) ◽  
pp. 11703-11711 ◽  
Author(s):  
Rene Rahrt ◽  
Thomas Auth ◽  
Maria Demireva ◽  
P. B. Armentrout ◽  
Konrad Koszinowski
Keyword(s):  
Electrospray Ionization ◽  
Ionization Mass ◽  
Mass Spectrometers ◽  
New Class ◽  
Thermometer Ions
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