A summary of the latest in new ion-exchange phases for ion chromatography, with a focus on general aspects of phase design and then a review of anion-exchange and cation-exchange columns introduced in the past few years
A new type of method development that uses modeling to find the "best" separation for high performance liquid chromatography (HPLC) was investigated and principles of Quality by Design (QbD) were followed when planning the investigation. The process delivered precise results and the method was able be transferred to a routine quality control (QC) laboratory.
Supercritical fluid chromatography has become a viable option for the separation scientist in diverse areas, and the field now seems more adequately described as an extension of HPLC, or perhaps as "carbon dioxide–based HPLC."
When choosing the articles to include in this supplement, my selection was based on a very simple criterion. My invitations went to the researchers that typically have something to say that I am interested in learning.