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Related Concept Videos

Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
Mass Spectrometry: Overview01:19

Mass 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...
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

Inductively 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...
High-Resolution Mass Spectrometry (HRMS)01:15

High-Resolution Mass Spectrometry (HRMS)

The resolution of a mass spectrometer depends on the efficiency of separating ions with different ion masses. The mass of an atom is approximated to the sum of the masses of protons and neutrons inside, considering the masses of protons and neutrons as equal. However, the masses of the proton (1.6726 × 10−24 g) and neutron (1.6749 × 10−24 g) are not truly equal. There is a minor error in the expression of atomic masses relative to the simplest atom of hydrogen. For example, the mass of helium...
Gas Chromatography–Mass Spectrometry (GC–MS)01:14

Gas Chromatography–Mass Spectrometry (GC–MS)

Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...

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Fluorescence-Guided Matrix-assisted Laser Desorption/Ionization with Laser-Induced Postionization Mass Spectrometry of Individual Rat Neural Cells
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eMZed: an open source framework in Python for rapid and interactive development of LC/MS data analysis workflows.

Patrick Kiefer1, Uwe Schmitt, Julia A Vorholt

  • 1ETH Zurich, Institute of Microbiology, 8093 Zurich, Switzerland. kiefer@micro.biol.ethz.ch

Bioinformatics (Oxford, England)
|February 19, 2013
PubMed
Summary
This summary is machine-generated.

The eMZed framework, a Python-based tool, simplifies mass spectrometry (MS) and liquid chromatography/MS (LC/MS) data analysis for researchers. It offers customizable workflows and supports iterative development for non-expert programmers.

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Area of Science:

  • Biochemistry
  • Computational Biology
  • Analytical Chemistry

Background:

  • Mass spectrometry (MS) and liquid chromatography-MS (LC/MS) are crucial analytical techniques.
  • Developing tailored data analysis workflows can be complex and time-consuming.
  • Existing tools may not offer the flexibility or ease of use required by all researchers.

Purpose of the Study:

  • To develop an open-source framework, eMZed, for creating customized LC/MS data analysis workflows.
  • To provide a user-friendly platform for both basic and advanced MS data analysis.
  • To support iterative development and prototyping of evaluation strategies for LC/MS data.

Main Methods:

  • Development of a Python-based framework named eMZed.
  • Integration of existing open-source software, such as OpenMS.
  • Provision of tools for inspecting and modifying LC/MS data within the framework.
  • Focus on ease of application and straightforward extension/modification capabilities.

Main Results:

  • eMZed offers comprehensive basic functionalities for LC/MS data analysis.
  • The framework supports iterative development and prototyping of analysis strategies.
  • It requires only basic Python knowledge, making it accessible to non-expert programmers.
  • eMZed facilitates tailored workflow creation for mass spectrometry users.

Conclusions:

  • The eMZed framework provides a flexible and accessible solution for LC/MS data analysis.
  • It empowers users, including non-programmers, to develop custom analysis workflows.
  • eMZed promotes efficient and adaptable data evaluation in mass spectrometry.