ABSTRACT
The PM2.5 open sources in the Tianjin port area mainly include yard dust, resuspended dust, road dust, soil dust, and construction dust. Due to the large open-source emission surface, low intensity, and strong interference from the surrounding environment, field sampling is often difficult to obtain. In order to match the particle size in the atmospheric environment and to simulate the real process of particles going into the ambient air, resuspension sampler was put into use while sampling. During the simulation, a sampler for resuspended particulates in the environment and pollution sources cut the powder samples into the size of PM2.5. The selection of the volume sampler was in strict accordance with national standards and the environmental standard. Teflon filter membrane and quartz filter membrane were the two types that were adopted according to the need for chemical analysis after sampling and the membranes’ own characteristics in the sampling filters for collection. The Teflon filter membrane prepares for analysis of elements while the quartz filter membrane for ion and carbon analysis.
