By Lee on Thursday, August 19, 2004 - 02:20 am:
What does polarity index refers to? How do I make use of this information to determine what types of mobile phase composition?
By tom jupille on Thursday, August 19, 2004 - 10:29 am:
As you might expect from the name, it's a measure of solvent polarity. It correlates fairly well with the Hildebrand solubility parameter. Useful primarily for normal-phase chromatography (and even then, not commonly used today). A good overview can be found in the classic Snyder & Kirkland "Introduction to Modern Liquid Chromatography", 2nd ed., pages 257-260.
If you don't have access to a copy, I think the book is still in print (Wiley). You can probably get it through Amazon.
By Lee on Monday, August 23, 2004 - 01:37 am:
Thanks a lot, Tom Jupille.
By tom jupille on Monday, August 23, 2004 - 12:05 pm: