a pattern of plume dispersion produced when a convective boundary layer grows upward into a plume trapped in a stable layer The elevated plume is suddenly brought downward to the ground, producing high surface concentrations
A condition that may occur during early to mid-morning when a strong radiation inversion begins to break up owing to surface heating A plume from a stack may be carried to the ground by stong convective currents This condition can result in very high ground level pollutant concentrations for short time intervals
the application of a gas or smoke to something for the purpose of disinfecting it
Quarantine treatment using a fumigant gas (Note: methyl bromide, previously commonly used, is now prohibited in certain countries, e g : USA) to kill and/or prevent infestation by insects, etc
Several companies offer a fumigation service and draw up official certificates Contact them through your agent
{i} process of exposing to smoke or steam for the purpose of disinfecting or exterminating pests
The destruction of any soil-born organisms (all stages of bacteria, insects, seeds etc ) by exposure to poison gas or smoke
Treatment with a pesticide active ingredient that is a gas under treatment conditions
The exposure of materials to the vapour of a volatile substance or toxic chemical in a closed container or chamber in order to destroy fungi and/or insects
Quarantine treatment using a fumigant gas (Note: methyl bromide, previously commonly used, is now prohibited in certain countries, eg: USA) to kill and/or prevent infestation by insects, etc
application of a gas, such as methyl bromide, to a sealed space to permeate areas and products to kill all pests, including eggs and larvae
The phenomenon in which pollutants, that had remained aloft in stratified, stable air, are brought rapidly to the ground level when the air destabilizes
application of a pesticide or chemical to a cargo in order to rid the cargo of insects The most common type of fumigant is phosphine gas, which is applied, in several different methods, to grain while in the elevator or vessel or barge A firm licensed by the government should handle fumigant, which can be toxic
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