the present invention relates to the use of a distributable sampling and sensing system for the determination of volatile components of consumable foods and other agricultural products . this process is used to separate and concentrate the chemicals of interest from samples at remote locations onto a target substrate that can be analyzed on - site or at a central lab . the chemicals deposited onto the substrate can be analyzed on - site with specific sensors or the target substrate can be sent to a central lab where the components adsorbed within are analyzed with conventional chemical instrumental methods . this process provides sufficient flexibility to enable the chemical analysis of a wide range of chemical species of interest in target materials in remote locations .