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Chemistry - Time of Flight Mass Spectrometry help Watch

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    If a large molecule was ionised by electron impact, would the fragmentation cause more isotopes to be detected?

    On graphs where fragmentation occurred, there are several peaks. I know these are isotopes but what causes all these isotopes
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    (Original post by PattoR)
    If a large molecule was ionised by electron impact, would the fragmentation cause more isotopes to be detected?

    On graphs where fragmentation occurred, there are several peaks. I know these are isotopes but what causes all these isotopes
    These isotopes are caused by the highly energised electron being fired at the large molecule.
    This either gives the isotope a negative charge or knock off electrons to give a positive charge or causes fragmentation.
    Fragments are isotopes which have been split into smaller parts that's why the peaks on the TOF spectra are often very low.

    Imagine a meteor being hit by a missile it will break apart into little pieces - some large - some small
    They are all part of the original meteor but just smaller.
    Small pieces little rocks may further break down into little bits of dust which are part of the little rock rather than classed a part of the original meteor.

    My analogy is a simple yet not quite accurate way of trying to get ur head round it.

    Hope this helps 😊
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