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Related Concept Videos

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...

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Measuring Sub-23 Nanometer Real Driving Particle Number Emissions Using the Portable DownToTen Sampling System
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Redefining Clean Air: From Mass to Component-Adjusted PM2.5 Standards

Kejian Shi1, Huaying Liu1, Chenyu Zhu1

  • 1College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.

Environmental Science & Technology
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No abstract available in PubMed .

Keywords:
air pollutionchemical cocktailfine particulate mattermass thresholds

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