Abstract
Smell is an important criterion of the quality of atmospheric air. The paper looks at quantitative and qualitative methods of odor assessment and describes the method of field olfactometry. Studies were carried out on the spread of odor from the WWTP OAO OKOS in the Kaliningrad region of Russia which resulted in 817 measurements. For each measurement, the following parameters were recorded: odor strength (D/T), odor character, atmospheric pressure (mmHg), temperature (°C), relative humidity (%), wind speed (m/s), wind direction and the the point where a measurement was taken. A mathematical model is given of the dependence of odor strength on the distance to two sources s1 (m) and s2 (m) and the wind direction from a straight line passing through a given point and a source 1 — a1 or a source 2 — a2.
Highlights
The choice of a particular schedule of experimental data collection is defined by the aims of the research, the accuracy requirements of the measurements, the distinctive features of a facility, the facility's location, the odor source type, the characteristics of the surrounding area and the technical possibilities for carrying out measurements
As odor perception is influenced by such factors as the assessor's individual subjective features and the weather conditions, it is important to set up a monitoring schedule such that the research period covers different seasons and measurements are carried out by different assessors at different times of the day and in different meteorological conditions in order to minimize the influence of the mentioned factors on the final result
As odor is an environmental factor that has a direct impact on humans, field odor studies are usually carried out in close proximity to places where people are present: for example, in the area of a facility to evaluate working conditions or at the boundary of a sanitary protection zone [Note: in Russia a sanitary protection zone is a special buffer zone established around facilities that affect the environment and people's health.], and in residential areas to assess the life quality of people in general
Summary
The choice of a particular schedule of experimental data collection is defined by the aims of the research, the accuracy requirements of the measurements, the distinctive features of a facility, the facility's location, the odor source type, the characteristics of the surrounding area and the technical possibilities for carrying out measurements. As odor perception is influenced by such factors as the assessor's individual subjective features and the weather conditions, it is important to set up a monitoring schedule such that the research period covers different seasons (especially the warm period) and measurements are carried out by different assessors at different times of the day and in different meteorological conditions (temperature, relative humidity, barometric pressure, wind speed and wind direction) in order to minimize the influence of the mentioned factors on the final result.
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