Douglas E. Raynie | Authors

"Sample Prep Perspectives" editor Douglas E. Raynie is a Department Head and Associate Professor at South Dakota State University. His research interests include green chemistry, alternative solvents, sample preparation, high-resolution chromatography, and bioprocessing in supercritical fluids. He earned his PhD in 1990 at Brigham Young University under the direction of Milton L. Lee. Raynie is a member of LCGC's editorial advisory board. Direct correspondence about this column via e-mail to LCGCedit@mjhlifesciences.com.

Articles

New Sample Preparation Products and Accessories for 2023

This yearly report on new products introduced at Pittcon and in the preceding year covers sample preparation instruments, supplies, and accessories.

New Sample Prep Products and Accessories for 2023

Here's the scoop on the latest offerings in sample preparation.

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.

Overview of Recent Development of Needle-Trap Devices for Analysis of Volatile Compounds

Continued development of needle-trap extraction (NTE) has expanded its versatility in applications such as disease diagnosis, aerosol-bound analytes, and breath analysis.

Class is Back in Session: More Questions on Your Extraction Knowledge (EU)

These questions tend to focus on dealing with octanol-water partition coefficients, as well as more practical applications of sample preparation.

Class Is Back in Session: More Questions on Your Extraction Knowledge

Test your knowledge of octanol-water partition coefficients and practical applications of sample preparation.