Agilent 7000A Triple Quadrupole GC/MS System

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  • เผยแพร่เมื่อ 29 ต.ค. 2024

ความคิดเห็น • 8

  • @2339091q
    @2339091q 8 ปีที่แล้ว

    4:56 what does it mean by N2+He? (lower right corner)

    • @GodlikeIridium
      @GodlikeIridium 7 ปีที่แล้ว +2

      Long Zhang Usually nitrogem (n2) is used as collision gas, which collides with the analyte ions passing Q1 to form fragments. But the EI ion source also "charges" helium atoms (it's not a charge, since helium is an inert noble gas, but a highly energetic state) and forms metastable helium which can charge other molecules inside the MS, which leads to noise (quite a lot of noise since helium is almost always used as carrier gas). And they found out that adding a helium flow to the N2 collision gas flow eliminates those metastable helium atoms, which reduces background noise.

  • @GodlikeIridium
    @GodlikeIridium 7 ปีที่แล้ว +1

    Haha cute. Matrix often > analyte :)
    Matrix > Analyte * 10^3 hits it better ;)
    Nontheless a great instrument!

  • @IDoNotFeelCreative
    @IDoNotFeelCreative 9 ปีที่แล้ว

    I DON'T GET HELIUM QUENCHING

  • @musicspinner
    @musicspinner 13 ปีที่แล้ว

    EPIC.

  • @s1mon1337
    @s1mon1337 11 ปีที่แล้ว

    WHY ARE YOU ALL SCREAMING?

  • @jibberfishal
    @jibberfishal 12 ปีที่แล้ว

    DOIN DEM SCANS

  • @christophertoth7746
    @christophertoth7746 9 ปีที่แล้ว

    SCAN SO HARD