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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 Spectrometers01:16

Mass 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:
Mass Analyzers: Overview01:13

Mass Analyzers: Overview

The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
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...
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.

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Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
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Tests performed with the improved MEGA spectrometer.

O Gustafsson, P Lindblom

    Applied Optics
    |June 5, 2010
    PubMed
    Summary
    This summary is machine-generated.

    The multiechelle grating arrangement (MEGA) spectrometer, previously described, has been improved with new gratings. Spectroscopic tests confirm the MEGA spectrometer is a valuable new instrument for optical spectroscopy applications.

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    Area of Science:

    • Optical Physics
    • Spectroscopy Instrumentation

    Background:

    • A novel spectrometer design utilizing the multiechelle grating arrangement (MEGA) principle was previously introduced.
    • Initial verification confirmed the theoretical resolution and operational principles of the MEGA spectrometer.
    • Limitations due to suboptimal gratings prevented comprehensive spectroscopic application testing in the prior study.

    Purpose of the Study:

    • To report on the performance of an improved multiechelle grating arrangement (MEGA) spectrometer.
    • To validate the utility of the upgraded MEGA spectrometer in practical spectroscopic applications.
    • To assess the effectiveness of newly acquired gratings and system enhancements.

    Main Methods:

    • Spectroscopic tests were conducted using the enhanced multiechelle grating arrangement (MEGA) spectrometer.
    • The instrument was equipped with newly obtained, improved gratings.
    • System enhancements were implemented to optimize performance.

    Main Results:

    • The improved multiechelle grating arrangement (MEGA) spectrometer demonstrated successful performance in spectroscopic tests.
    • The upgraded gratings and system modifications resolved previous limitations.
    • The instrument proved capable of effective spectroscopic analysis.

    Conclusions:

    • The multiechelle grating arrangement (MEGA) spectrometer, with recent improvements, is confirmed as a functional and valuable tool.
    • The enhanced MEGA spectrometer is suitable for a range of optical spectroscopy tasks.
    • Further development has established the MEGA spectrometer's viability for scientific applications.