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  • kylabs

    第11楼2011/09/06

    分离和重现性都不错，还可以同时做三聚氰胺和三聚氰酸。

    Method Conditions

    ColumnCogent Diamond Hydride™, 4µm, 100A
    Catalog No.70000-15P-2
    Dimensions2.1 x 150 mm
    SolventsA: DI water + 0.1% acetic acid
    B: Acetonitrile + 0.1% acetic acid
    Gradient
    Time %B
    0.0100
    15.0050
    Post time5 min
    Flow rate0.4 mL/min. t0 = 0.8 min.
    Sample Prep1. Cyanuric acid 1.5 microg/mL: NEG (M-H)- 128.0102 m/z analyzed
    in Neg mode, RT = 1.278 min
    2. Melamine 3 microg/mL: POS (M+H)+ 127.0727 m/z analyzed in Pos
    mode, RT = 11.260 min
    DetectionESI ?NEG for cyanuric acid and ESI ?POS for melamine: -
    Agilent 6210 MSD TOF mass spectrometer.
    Note: When an instrument with a dual ion source is used both samples can
    be analyzed simultaneously.

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