They are taken by room temperature volatilization or from a pressurized container (e.g., nitrous oxide), and do not include drugs that are sniffed after burning or heating.
During summer, urea is often spread just before or during rain to minimize losses from volatilization (process wherein nitrogen is lost to the atmosphere as ammonia gas).
The activity of the activator generally increases with temperature, up to a certain value where activity ceases, either due to thermal decomposition or excessive volatilization.
Research projects mainly focus on inorganic fluxes, including studies of ammonia volatilization from soils, hydrology natural runoff plots and transect soil water content.
