21 - Air pollution monitoring network of PM2.5, NO2 and radiation of 137Cs

Abstract

This chapter focuses on the detection and monitoring of air pollutants [fine particulate matter (PM2.5) and nitrogen dioxide (NO2)] and radiation using portable sensors designed for outdoor environments. Air pollutants have become a serious global health issue. Increased levels of mortality and morbidity have been attributed to respirable materials in the atmospheric environment, and ambient concentrations of PM2.5 and NO2 have been shown to pose a threat to human health and the environment. Atmospheric concentrations of PM2.5 and NO2 are known to be localized, based on the studies related to outside monitoring with large instruments. Portable air pollutant sensors are capable of transmitting data through existing wireless communication infrastructure and a new and promising method to estimate air pollutant concentrations in residential areas and when a person is in transit. This information could be used by an individual to ascertain the relationship between his/her long-term exposure to air pollutants and morbidity risks. With respect to radiation, the demand for residential and personal monitoring devices has been increasing due to the accident at the Fukushima nuclear power plant. Mobile radiation monitoring sensors and field tests are described and discussed. In addition, the collection and processing of air quality data with small sensors connected via wireless networks represents a promising new application in the field of air pollution monitoring.