Development of Analysis Method for Perfluoro Alkyl Substances in Atmospheric Particulate Matters

摘要

Perfluoro octane sulfonate was one of newly listed as emerging POPs and only one of huge group of perfluoroalkyl substances (PFASs), it was known as "super set" of chemical tracers including more than ninety related chemicals. Comprehensive monitoring of PFASs is necessary to make reliable understanding of environmental kinetics. However, atmospheric pollution by PFASs is still unclear because their existence condition was not fully understood yet. This is a motivation to develop new sampling tool to investigate PFASs in atmosphere in this study. Capability of new sampler was evaluated using the both indoor air and ambient air. The former was carried out in air-condition room and the latter was on roadside, both investigation were carried out through a year. After above verification, international field survey using the tool was carried out. Totally thirty-eight samples were collected from eleven locations from four countries, Japan, India, China and USA. These sample analyses provided useful information about environmental kinetics of PFASs in atmosphere, not only in particulate matter but also in gas phase under different climate conditions. This is the first research to investigated PFASs by both gas and size distribution analysis to our knowledge.