Luna 5 µm PFP(2) 100 Å, LC Column 150 x 4.6 mm, Ea

Бренд: Phenomenex

Long Column Lifetimes and Excellent Performance

Ultra-pure, metal-free silica (99.99 % purity) is the backbone of all Luna material. The resulting high quality particles have a surface smoothness, pore structure, and pore consistency to ensure a more uniform particle shape and greater reproducibility.

Waters® Symmetry®

Waters® Symmetry® 5 µm C18

Phenomenex Luna

4 Mechanisms of Interaction

Luna® PFP(2) columns provide unique selectivity for highly polar compounds, complex natural products, isomers and other closely related compounds. This is achieved by using a propyl linked pentafluorophenyl, which provides multiple retention mechanisms unique to typical reversed phase medias.

  1. Hydrogen Bonding
  2. Dipole-Dipole Interactions
  3. Aromatic and π-π Interactions
  4. Hydrophobic

A typical alkyl phase (C18‚ C8) achieves selectivity through only 1 mechanism of interaction.


PFP_particle

Positional Isomers of Methylacetophenone

Positional changes on an analyte of interest may effect the compound’s dipole moment. This change can be readily seen by the way the highly electronegative fluorine (F) atoms and other retention mechanisms of the Luna PFP(2) are able to separate positional isomers.

The high efficiencies and bonded phase surface coverage provide for sharp peaks The C 8 columns are generally better hydrogen bond acceptors, and better for acidic compounds.

16298_16299
Conditions same for both columns:

Column:
Luna 3  µm PFP(2) Luna 3 µm C18(2)
Dimensions
150 x 4.6  mm
Part No.:
00F-4447-E0 00F-4251-E0
Mobile Phase:
Water/Methanol (50:50)
Flow Rate:
1 mL/min
Temperature:
22 °C
Detection:
UV @ 254 nm
Sample:
1. o-Methylacetophenone
2. m-Methylacetophenone
3. p-Methylacetophenone


Aromatic Compounds

Luna 3 µm PFP(2)   

Column:
Luna 3  µm PFP(2) Luna 3 µm C18(2)
Dimensions
150 x 4.6  mm
Part No.:
00F-4447-E0 00F-4251-E0
Mobile Phase:
A: 0.1 % Formic acid in Water
B: 0.1  % Formic acid in Acetonitrile
Gradient:
A/B (80:20) to (55:45) in 10 min
Flow Rate:
1 mL/min
Temperature:
22 °C
Detection:
UV @ 280 nm
Sample:
1. Gallic acid
2. Epigallo catechin
3. Catechin
4. Epicatechin
5. Epigallocatechin gallate
6. Gallocatechin gallate
7. Epicatechin gallate
8. Catechin gallate


Артикул: 00F-4448-E0 Категория: Бренд: