Related Experiment Video
Updated: Jul 29, 2026
08:54
Characterizing Bacterial Volatiles using Secondary Electrospray Ionization Mass Spectrometry (SESI-MS)
Published on: June 8, 2011
Electrochemical processes in electrospray ionization mass spectrometry
1Mechanical Engineering Department, Yale University, New Haven, Connecticut 06511-8286, USA.
Journal of Mass Spectrometry : JMS
|September 6, 2000
Summary
This commentary explores the electrochemistry in electrospray ionization (ESI), featuring a debate among six authors. It highlights the scientific process and encourages younger scientists to engage with complex analytical techniques.
Area of Science:
- Analytical Chemistry
- Physical Chemistry
Background:
- Electrospray ionization (ESI) is a crucial technique in mass spectrometry.
- The fundamental mechanisms and electrochemical role in ESI have been subjects of ongoing scientific discussion.
Purpose of the Study:
- To present a detailed exchange of views on the role of electrochemistry in electrospray ionization.
- To offer insights into the scientific process and how conclusions are reached.
Main Methods:
- A collection of articles presenting diverse perspectives on ESI fundamentals.
- A facilitated discussion and debate among six leading scientists in the field.
Main Results:
- A comprehensive commentary on the electrochemistry of ESI.
- Demonstration of scientific discourse, showcasing "science in action".
Conclusions:
- The debate clarifies the intricate relationship between electrochemistry and ESI mechanisms.
- Encourages critical engagement with scientific methodology for emerging researchers.
Related Concept Videos
01:19Mass Spectrometry: Overview
Mass spectrometry is an analytical technique used to determine the molecular mass and molecular formula of a compound. The basic principle of mass spectrometry is to generate ions from the analyte molecule and measure these ion abundances against their molecular mass. One common type of ionization, known as electron ionization or EI, bombards the analyte molecules in the gas phase with high-energy electron beams. The electron beams displace an electron from the molecule and leave behind a...
01:21Chemical Ionization (CI) Mass Spectrometry
The molecular ion peak of a molecule in the mass spectrum provides vital information for molecular identification. However, conventional electron impact ionization can lead to the rapid dissociation of some molecular ions before they reach the detector. A milder ionization method is required to increase the lifetime of such ionized analyte molecules. Chemical ionization (CI) is a gas-phase protonation reaction useful for mass-analyzing analyte molecules that are easily protonated to yield the...
01:12Electrospray Ionization (ESI) Mass Spectrometry
Higher molecular weight biomolecules are nonvolatile compounds that may decompose before ionizing or vaporizing during mass analysis with conventional electron impact ionization methods. Accordingly, electrospray ionization (ESI) is the favored method for vaporizing and ionizing biomolecules as it circumvents rapid fragmentation and enables the recording of mass signals for the entire biomolecule.
ESI utilizes electrical energy to transfer ions from the liquid phase of the sample into the...
ESI utilizes electrical energy to transfer ions from the liquid phase of the sample into the...
01:16Mass Spectrometers
This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
01:24Mass Spectrum: Interpretation
An unknown compound can be established by identifying the molecular ion peak in the mass spectrum. The molecular ion peak is often weak or absent due to the predominance of fragmentation in high-energy electron beams. In such cases, a soft-energy electron beam can be used to scan the spectrum to enhance the intensity of the molecular ion peak. Additionally, chemical ionization, field ionization, and desorption ionization spectra are used to obtain a relatively intense molecular ion peak.To...
01:19Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview
In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then passed on to...