Liquid trace detection and identification by spectral reflectance model

Abstract

A basic concept for detection and identification of liquid phase chemicals that may harm the environment is presented. Reliable detection is shown to be possible using a simplified model describing a uniform layer as well as realistic dispersal, shown to be in nonuniform irregular surface coverage. The results are dependent upon the effect of droplet size and spectral scattering from liquid–air interface on the measured scattered light. This information is crucial for accurate identification for on-site real-time sensing.