Personal Exposure Profiles
Updated: Sep 14, 2020
Quantifying citizen exposure to air pollutants is a challenging task. Every individual has unique activity-pattern defined by the whereabouts of the individual being exposed and the concentration of pollutants in the different locations. New developments in low-cost sensor technology now enable us to monitor personal exposure to air pollutants directly while people are moving through their activity spaces and varying concentration fields. People spend up to 90% of their time indoor in systems bounded by the physical volume of the indoor setting. In sealed buildings, the ventilation system influences the air exchange rate, deposition rate, and source emission rate. When outdoors, people are exposed to ambient air pollution; the local meteorological situation dominates air exchange rate and deposition rate and source emission rates are highly variable is space and time. Common to both indoor and outdoor personal exposure profiles are concentration dosage, the duration of exposure, and the frequency of exposure.