In Narva, Estonia, a mobile laboratory of the Estonian Environmental Research Centre recorded unusually clean air during autumn monitoring. The check was conducted on Wednesday, when laboratories intensify their work with the onset of autumn, as air quality usually deteriorates during the heating season, ERR News reports.
Mobile measurement buses operate in various Estonian localities where there are no permanent monitoring stations. Erik Teinemaa, head of the Air and Climate Department at the Environmental Research Centre, noted that national average figures do not always reflect the situation in individual places.
The measurement bus is equipped with around ten sensors, each of which monitors a separate pollutant. In particular, the dust-measuring device passes through a filter in one hour the same volume of air that a person inhales during that time and retains dust particles on it.
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The air sampled in Narva left no traces on the tape of the dust-measuring device. Other indicators also showed good air quality in the border city.
According to Teinemaa, the result is influenced by the efficient operation of the power plant's purification equipment, as well as the fact that there is virtually no stove heating in Narva. He explained that private homes with stove heating have no purification systems, so emissions levels depend on what is used to heat the homes and how.
After Narva, the measurement bus will head to the Nõmme district of Tallinn, where the stove-heating season will begin soon.
Source: UA
