Portable Sensor for Determining Benzene Concentration from Airborne/liquid Samples with High Accuracy

摘要

Our previously developed portable monitoring system for detecting airborne benzene down to the level of one part per billion (1 ppb) has been extended to a portable sensor for liquid samples through the development of modules for extraction from the liquid phase to the vapor phase based on two protocols: bubbling and pervaporation. This portable sensor has demonstrated a high selectivity to benzene or a detection limit below the one-part-per-billion-by-volume (1-ppbV) level depending on the extraction protocol.