{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,24]],"date-time":"2026-04-24T23:21:17Z","timestamp":1777072877052,"version":"3.51.4"},"reference-count":22,"publisher":"IOP Publishing","issue":"1","license":[{"start":{"date-parts":[[2022,12,1]],"date-time":"2022-12-01T00:00:00Z","timestamp":1669852800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"},{"start":{"date-parts":[[2022,12,1]],"date-time":"2022-12-01T00:00:00Z","timestamp":1669852800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["IOP Conf. Ser.: Earth Environ. Sci."],"published-print":{"date-parts":[[2022,12,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>The lignite long-lasting exploitation has resulted in a series of negative impacts on the air quality of the lignite basin of Ptolemaida, Amynteo and Florina. The coal-fired plants in this region are the greatest sources of air pollutants, such as SO<jats:sub>2<\/jats:sub>, NO<jats:sub>X<\/jats:sub>, CO<jats:sub>2<\/jats:sub>, PM, heavy metals and fly ash. In this study, we investigate the air quality of Western Macedonia based on measurements of PM<jats:sub>2.5<\/jats:sub> and PM<jats:sub>10<\/jats:sub> in ten air quality monitoring stations (Filotas, Koilada, Oikismos, Petrana, Komi, Amyntaio, Florina, Vevi-Meliti, Pontokomi and Anargyroi) which are located in the broader area of the lignite power plants. The trends of PM time series over a 12-year period (2010-2021) show a gradual decrease of PM<jats:sub>2.5<\/jats:sub> and PM<jats:sub>10<\/jats:sub> concentrations following the decline of lignite production in Greece. In order to characterize the underlying atmospheric and anthropogenic processes affecting the PM concentrations we assessed the ratios of PM<jats:sub>2.5<\/jats:sub> to PM<jats:sub>10<\/jats:sub>. The high ratios of PM<jats:sub>2.5<\/jats:sub>\/PM<jats:sub>10<\/jats:sub> indicate a major contribution of fine particles attributable to anthropogenic air pollution sources, while small ratios indicate that coarse particles are dominant, which might be related to natural sources of air pollution. We found that average PM<jats:sub>2.5<\/jats:sub>\/PM<jats:sub>10<\/jats:sub> ratios during the study period ranged between 0.48 in Oikismos and 0.70 in Florina and Vevi-Meliti. For Florina and Vevi-Meliti, the daily PM<jats:sub>2.5<\/jats:sub>\/PM<jats:sub>10<\/jats:sub> ratios were found to reach the value of 1.0, while the daily average ratios of PM<jats:sub>2.5<\/jats:sub>\/PM<jats:sub>10<\/jats:sub> were above 0.9 for almost the 15 % of the days in these sites. In the other sites high daily ratios of PM<jats:sub>2.5<\/jats:sub>\/PM<jats:sub>10<\/jats:sub> were found for a lesser number of days. The high ratios which have been found at these sites indicate the considerable contribution of energy combustion for heating purposes and other anthropogenic processes. Overall, we used the PM<jats:sub>2.5<\/jats:sub>\/PM<jats:sub>10<\/jats:sub> ratio to characterize the processes affecting the air quality within the local environment.<\/jats:p>","DOI":"10.1088\/1755-1315\/1123\/1\/012077","type":"journal-article","created":{"date-parts":[[2022,12,26]],"date-time":"2022-12-26T12:14:43Z","timestamp":1672056883000},"page":"012077","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":5,"title":["Investigation of the particulate air pollution and the ratio of PM<sub>2.5<\/sub> to PM<sub>10<\/sub> concentrations in the atmosphere over the lignite mining and lignite-fired power plants region of Western Macedonia, Greece."],"prefix":"10.1088","volume":"1123","author":[{"given":"V","family":"Evagelopoulos","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P","family":"Begou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P","family":"Kassomenos","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S","family":"Zoras","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"266","reference":[{"key":"EES_1123_1_012077bib1","first-page":"102","article-title":"Correlation of Ambient Air Quality with the Sudden Reduction in Mining Activity in a Complex of Lignite Mines","volume":"5","author":"Sachanidis","year":"2021","journal-title":"Materials Proceedings"},{"key":"EES_1123_1_012077bib2","doi-asserted-by":"crossref","DOI":"10.1007\/s10668-021-02083-8","article-title":"Effects of a coal phase-out in Europe on reaching the UN Sustainable Development Goals","author":"V\u00f6gele","year":"2022"},{"key":"EES_1123_1_012077bib3"},{"key":"EES_1123_1_012077bib4","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1023\/A:1025829907390","article-title":"Levels and Trend of Suspended Particles around Large Lignite Power Stations","volume":"89","author":"Triantafyllou","year":"2003","journal-title":"Environ Monit Assess"},{"key":"EES_1123_1_012077bib5","first-page":"234","article-title":"PM10-PM2.5 time series and fractal analysis","volume":"8","author":"Evagelopoulos","year":"2006","journal-title":"Global NEST Journal"},{"key":"EES_1123_1_012077bib6","first-page":"378","article-title":"Characterisation of Airborne Particles Collected Proximal to Lignite Mines and Power Plants of Ptolemais-Kozani Area, Northern Greece","volume":"17","author":"Iordanidis","year":"2008","journal-title":"Fresenius Environ. 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