Nonylphenol Ethoxylates (3) (GF-310 4E)
Nonylphenol ethoxylates were analyzed using MSpak 
GF-310 4E (a multisolvent GPC column). 
Nonylphenol ethoxylates are eluted by their poler using gradient solvent system. 
  

Sample : 5micro-L
1. 
Nonylphenol ethoxylates (NPnEO)
2. 
Nonylphenol (NP)
Column       : Shodex MSpak GF-310 4E (4.6mmID*250mm)
Eluent       : (A); CH3CN (B); H2O
               0min to 26min to 33min to 48min, A/B= 26/74 to 50/50 to 90/10 to 90/10
Flow rate    : 0.5mL/min
Detector     : Fluorescence detector(Ex.225nm, Em.300nm)
Column temp. : 40deg-C