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Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

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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.
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Electrospray Ionization (ESI) Mass Spectrometry01:12

Electrospray Ionization (ESI) Mass Spectrometry

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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.
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Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

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Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and signal-to-noise ratio for the analyte. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.
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Mass Spectrometry: Overview01:19

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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 electrospray 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...
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
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Mass Spectrometers01:16

Mass Spectrometers

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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:
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Acoustic Ejection Mass Spectrometry for High-Throughput Analysis.

Hui Zhang1, Chang Liu2, Wenyi Hua1

  • 1Pfizer Global Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States.

Analytical Chemistry
|July 28, 2021
PubMed
Summary
This summary is machine-generated.

A new mass spectrometry platform integrates acoustic droplet ejection and an open-port interface for rapid, label-free analysis. This technology streamlines complex workflows in pharmacology and medicinal chemistry.

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Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Pharmacology

Background:

  • Traditional mass spectrometry workflows involve time-consuming sample preparation and method development.
  • High-throughput analysis and label-free detection are crucial for modern drug discovery and biochemical research.

Purpose of the Study:

  • To develop a novel analytical platform for high-speed, label-free mass spectrometry.
  • To integrate acoustic droplet ejection (ADE) and open-port interface (OPI) with electrospray ionization mass spectrometry (ESI-MS).

Main Methods:

  • Integration of ADE for precise nanoliter droplet delivery.
  • Utilized OPI for in-line sample dilution.
  • Coupled ADE and OPI with ESI-MS for automated analysis.

Main Results:

  • Demonstrated high-speed, touchless sample introduction with ADE.
  • Achieved label-free analysis, reducing sample preparation needs.
  • Successfully applied the platform to diverse applications including pharmacology screening and enzyme kinetics.

Conclusions:

  • The integrated ADE-OPI-ESI-MS platform offers a transformative solution for rapid, label-free analytical challenges.
  • This system significantly enhances efficiency in high-throughput screening and complex biological analyses.
  • The platform facilitates advanced applications in medicinal chemistry and pharmacokinetic studies.