Emerging Contaminants

Online Analysis of Emerging Contaminants in the Atmosphere 

Background

Emerging Contaminants in the Atmosphere

Emerging contaminants (EC) are synthetic or naturally occurring chemicals that are not commonly monitored in the environment, but which could adversely affect ecological and human health. In the atmosphere, emerging contaminants of high concern include perfluoroalkyl substances (PFAS), disinfectants (ethylene oxide), volatile chemical products (VCPs), plasticizers (such as phthalates), flame retardants, and dioxins. Current analytical methodologies used to identify and quantify trace levels of these ECs in environmental air often require time-consuming sample collection and preparation, as well as multiple steps for separation and detection.

The TOFWERK real-time VOC analyzer –  Vocus PTR-TOF offers a turnkey solution for online VOCs and emerging contaminants analysis, without any sample preparation or GC separation, leading to a real-time and fast data output. A wide range of reagent ions is available to increase detectable chemical scope and specificity.  The Vocus PTR-TOF is the most sensitive available mass spectrometer for online VOC analysis – able to detect ppt-level components in seconds.

Interchange of ion sources is also available with our API-TOF platform to expand instrument capabilities. The API-TOF is widely used with other chemical ionization schemes that are selective for a wider range of organic and inorganic compounds. The EESI ionization source extends this sensitive, molecular analysis capability to the aerosol phase. Our atmospheric science customers have run the API-TOF on all 7 continents – making measurements at remote field sites and aboard mobile research platforms.

Solutions

  • Real-Time and Sensitive Analysis of Emerging Contaminants Using the Vocus PTR-TOF

    • Highest sensitivity available with ppt limits of detection
    • High mass resolving power enables identification of individual compounds within complex mixtures
    • Real-time and fast data output capturing rapid changes in VOC concentrations and suitable for mobile monitoring
    • Full spectrum acquisition allows measurements of wide range of compounds simultaneously
    • A wide range of reagent ions available to increase detectable chemical scope and specificity

    Ethylene Oxide measured with the Vocus PTR-TOF

  • Selective Analysis Using the API-TOF Platform

    • Flexible platform can accommodate many types of chemical ionization
    • Direct, high-pressure, real-time analysis of ambient air
    • High mass resolving power enables identification of individual compounds within complex mixtures
    • Full spectrum acquisition allows measurements of wide range of compounds simultaneously

    Iodide CIMS spectrum of a perfluoroacid

Related Instruments

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