Chemistry Loves Chemistry
Being an Integrity man.
Thursday, February 19, 2009
LC/MS/MS Parameter Seeting
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Sunday, February 15, 2009
waters2695,Agilent Extend C18,waters2420ELSD?
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(1) ELSD? (2) & (3) : 225 nm. For Traditional Chinese Herbs only: -> Chromatogram Peaks and Retention Time(Chromatographic Activity) ...
Thursday, January 22, 2009
Biosample Assay by LC-MS (2)
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(1) Capillary Voltage: -3.0 kv. (2) Cone Voltage: -40 v. (3) Collision Energy: 18 ev. (4) MRM: m/z 299.5 →m/z 255.2.
Biosample Assay by LC-MS (1)
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Happy Spring Festivals 2009!
Monday, January 19, 2009
Ionization Suppression Summary
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(1) Compounds That Cause Sensitivity Suppression. -Salts can interfere with ionization and can cluster to complicate spectrum (but also aid ...
Thursday, January 8, 2009
Five Ways to Reduce Acetonitrile Consumption
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The current global shortage of Acetonitrile has pushed us to find 5 ways to reduce thedependence on Acetonitrile Option 1: Reduce column ID...
VIP reference for the Method Transfer....
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Tuesday, December 30, 2008
It's time to clean the Inlet....
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Agilent 6890N ECD. Temp Ramp: 80℃（1min)----20℃/min--- 260℃（15min)----5℃/min---300℃（3min), Detector Temp: 300℃ Inlet: 250℃ GC Column:HP-5.
Saturday, December 27, 2008
Baseline drift?
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Monday, December 22, 2008
Maybe the collision energy (CE) is too LOW
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(1) Maybe the collision energy is too LOW. The First MS is not full a fragment. (2) Are you using ESI mode? (3) If the Molecular weight is ...
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