Review of studies on indoor environment targeted at ammonia

Abstract

Ammonia is often generated in our living environment by various mechanisms, and the emission source includes plants and animals. Because ammonia is one of the chemicals which shows the strong odor, the long-term exposure to high concentration of ammonia might be rare case. However, ammonia should still be attracted as an important inorganic chemical compound due to the facts that there were indoor environments whose concentration of ammonia was around the odor threshold value (1.5 ppm), according to actual measurement results. This article describes the generation mechanisms and behavior of ammonia, and measurement methods were interpreted with active and passive samplers including sampler for onsite use Moreover, novel studies which aim to use the measured ammonia data as information from plants and human beings were introduced.