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Environmental concentration of a pollutant, resulting from a combination of immissions and dispersals; often synonymous with exposure.
[L. immissio, introduction, fr. im- mitto, to introduce]
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
--data describing the receptors considered (the number of receptors to pollutant immission concentration taken into account, the height of placement of every receptor considered, landmark coordinates to a fixed point, the nature of land);
Immission standards are based on noise quality criteria or guideline values for noise exposure to be applied to specific locations and are generally built into planning procedures (Kaklauskas et al.
--measurement of aircraft noise around the Aeroclub of Kamenica nad Cirochou at the measuring points 1 to 4 is shown that there are not exceeded immission values for determining values of environmental noise at all measuring points in a set time interval,
At an Action Against Noise seminar at the NEC, Mr Meacher said the Sound Immission Contour Maps (SICMs) are an important step in reducing noise pollution.
Other environmental technical standards are, for instance, emission and immission limits for S[O.sub.2] air pollution, or the nitrate content of ground water, or the exposure of the human body to radiation, measured in REM.
In combination with the Immission Frequency Distribution Model (IFDM)] using emissions from line sources and point sources, the model chain provides daily [PM.sub.10] and [PM.sub.2.5] values on a 25 x 25 m receptor grid (Lefebvre et al.
Additionally, the students' exposures were described by a noise immission level ([L.sub.IM]), i.e., a measure of the cumulative sound (noise) energy to which an individual was exposed over time given by the formula (2):
Other authors, such as [20], divide the noise and vibration problem into three weakly coupled subproblems (emission, transmission, and immission) and develop a specific model for each stage.
The main aims of environmental regulation can foster the improvement of emission or immission measures.