ABSTRACT
Process and matrix distribution studies generally measured the concentration distributions of one or more pesticides between various atmospheric matrices to determine their physical and chemical properties, controlling processes, or in the development of sampling or analytical methodologies. National and multistate pesticide monitoring studies were occurrence surveys for specific compounds or compound classes at more than one site in multiple states for several months to several years. Local studies also include targeting the occurrence and distribution of locally used pesticides in one or more atmospheric matrices such as fog air and precipitation. Air has been the most sampled atmospheric matrix, particularly during the 1960’s and 1970’s. A wider variety of pesticides, including organophosphorus insecticides and a variety of herbicides, were found in California. Field studies that monitored one or more atmospheric dissipation processes of specific pesticides from specific applications are also included.
