Abstract
he air pollutant emission factors has been utilized as very important technical constants, to estimate and characterize the emission rate from the numerous sources that contribute to the community air pollution, and to decide the course of the air pollution control policies.
In this review, author descrived the research and survey to determine the emission factors, and introduced these values from the stationary combustion sources, the chemical process industries, the evaporation loss sources and the open storage piles of coal, ore and rock as example.
Then author discussed the problem to solve about the emission factors in future.
