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    Nerve Agent Graphic 2 [Image 4 of 4]

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    The image depicts a cyclic chemical reaction scheme for the detection of a nerve agent simulant (DFP - diisopropyl fluorophosphate) using a fluoride amplification and sensing system. The cycle shows how DFP releases fluoride ions, which trigger a silyl ether cleavage in a fluoride-amplification system (System 1), releasing more fluoride ions in a cascade, ultimately activating fluoride-sensing system 2 to produce colorimetric and fluorometric signals. The overall scheme illustrates a signal amplification strategy for chemical warfare agent detection using a polymer colorimetric indicator and naphthalimide-based fluorometric indicator.

    FORT BELVOIR, VIRGINIA, UNITED STATES

    06.22.2017

    Courtesy Photo

    Defense Threat Reduction Agency's Chemical and Biological Technologies Department

    The auto-inductive cascade for the detection of nerve agent surrogate, DFP, through fluoride (signal) amplification. Figure courtesy of Chemistry - A European Journal

    IMAGE INFO

    Date Taken: 06.22.2017
    Date Posted: 06.22.2017 10:35
    Photo ID: 3506616
    VIRIN: 170622-A-AB123-005
    Resolution: 2916x2483
    Size: 386.04 KB
    Location: FORT BELVOIR, VIRGINIA, US
    Web Views: 85
    Downloads: 7

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    This work, Nerve Agent Graphic 2 [Image 4 of 4], must comply with the restrictions shown on https://www.dvidshub.net/about/copyright.

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    The image shows a black plastic component, likely a spool cover or guard from a string trimmer (weed eater/strimmer). It features a circular ventilated grille in the center with a cross-shaped fastener point, surrounded by a raised dome-shaped housing. Metal clips are visible on the sides, suggesting it attaches to a larger tool body.
    The image depicts a cyclic chemical reaction scheme for the detection of a nerve agent simulant (DFP - diisopropyl fluorophosphate) using a fluoride amplification and sensing system. The cycle shows how DFP releases fluoride ions, which trigger a silyl ether cleavage in a fluoride-amplification system (System 1), releasing more fluoride ions in a cascade, ultimately activating fluoride-sensing system 2 to produce colorimetric and fluorometric signals. The overall scheme illustrates a signal amplification strategy for chemical warfare agent detection using a polymer colorimetric indicator and naphthalimide-based fluorometric indicator.

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    CONTROLLED VOCABULARY KEYWORDS

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    TAGS

    DFP
    DEFENSE THREAT REDUCTION AGENCY
    DTRA
    DTRA CB
    JSTO
    Joint Science and Technology Office
    CWMD
    Defense Threat Reduction Agency's Chemical and Biological Technologies Department
    Combating weapons of mass destruction
    Auto-inductive cascade
    nerve agent surrogate detection
    Fluoride amplification
    countering weapons of mass destruction

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