Characterizing the Bioavailability of Cationic Surfactants using Passive samplers

Introduction

• Cationic surfactants are widely used chemicals, and trace level have been detected in sediment monitoring
• Free concentrations of cationic surfactants are lower, but difficult to determine
• We optimized the ion-exchange SPME method to characterize the sorption behavior of two cationic surfactants to organic matter