About the Author: JANUSZ PAWLISZYN, PhD, is a Professor in the Department of Chemistry at the University of Waterloo in Ontario, Canada. He is the author of Solid Phase Microextraction (Wiley) and Sampling and Sample Preparation in Field and Laboratory, and has been published in more than four hundred scientific publications. HEATHER L. LORD, PhD, is a Research Associate for New Analytical Methods and Technologies in the Department of Chemistry at the University of Waterloo. She received her PhD in 2005 under Dr. Pawliszyn.