Essentials of LC Troubleshooting, Part II, Continued: More Misbehaving Retention Times
When can analyte retention deviate from what is expected or normal? We explain three subtle causes.
Practical Understanding of Partition Coefficients
On a fundamental level, equilibrium and diffusion define chemical separations. Practical applications of partition coefficients to chromatographic sample preparation illustrate this point.
How Chemistry Determines Separations: Influence of Selectivity on Resolution
Understanding the relationship between selectivity and retention is key to realizing excellent gas chromatographic separations.
Analyzing Per- and Polyfluoroalkyl Substances (PFAS) in Foods
As our knowledge about PFAS in food continues to develop, and regulations evolve, we must continue to refine our analytical methods.
Efforts to Increase Diversity and Equity in Introductory Chemistry
Increasing inclusivity and equity in chemistry will require a positive instructor mindset, as well as invention, exploration, and trials.
Revisiting the Fundamentals of Untargeted Data Analysis with Comprehensive Two-Dimensional Gas Chromatography (GC×GC): With Great Peak Capacity, There Must Also Come Great Responsibility
Two-dimensional gas chromatography (GC×GC) and chemometrics are leading the way in new strategies on multivariate data analysis. Using GC×GC in untargeted analysis reveals how far the technique has advanced the field of separation science.
