Abstract
Introduction. Kamchatka Krai is a region with low population density and poorly developed industry. However, in large cities the air quality is degraded due to economic activity. Aim. To study the concentration of airborne particulate matter (in particular, up to 1 µm and up to 10 µm) in Petropavlovsk-Kamchatsky and Yelizovo air and carry out a comparative analysis with the previously obtained results of environmental monitoring of atmospheric suspension.Materials and methods. Airborne particulate matter was studied in snow which was collected during snowfalls to avoid its secondary pollution by anthropogenic aerosols. The melted snow was analyzed on a Fritsch Analysette 22 NanoTech laser particle analyzer (Germany).Results. PM1 particles were found in five snow samples taken in Petropavlovsk-Kamchatsky. The quantity of PM₁₀ is low in all samples, and only in two of six sampled areas it reaches 12%. Compared to the results of previous studies, the concentration of PM1 is at the same level as in previous years, and the content of PM₁₀ has decreased. In samples from Yelizovo, the same trends are observed. Compared to 2018, when a high concentration of PM₁₀ particles was found in almost all samples, reaching 57.2%, there is a trend towards a decrease in the concentration of the potentially hazardous PM fraction.Conclusion. Updated data on the particle size distribution of airborne particulate matter in two cities of the Kamchatka Peninsula were obtained. In the snow samples collected in Petropavlovsk-Kamchatsky and Yelizovo, we found PM₁ and PM₁₀ particles hazardous to human health, although their concentration is generally lower than in previous years of the study.
Highlights
Сферы – один из геоиндикаторов изменения природной среды под воздействием урбанизации и хозяйственной деятельности человека
PM10 particles was found in almost all samples, reaching 57.2%, there is a trend towards a decrease in the concentration of the potentially hazardous PM fraction
In the snow samples collected in Petropavlovsk-Kamchatsky and Yelizovo, we found PM1 and PM10 particles hazardous to human health, their concentration is generally lower than in previous years of the study
Summary
Дальневосточного отделения Российской академии наук, 690041, г. Изучить содержание взвешенных микроразмерных частиц (в частности, размером до 1 мкм и до 10 мкм) в воздухе г. Петропавловска-Камчатского и Елизово и провести сравнительный анализ с полученными ранее результатами экологического мониторинга атмосферной взвеси. Субмикронные частицы PM1 обнаружены в пяти отобранных в Петропавловске-Камчатском пробах снега. Уровень частиц размером до 10 мкм невысок во всех пробах, и только в двух из шести районов отбора их доля доходит до 12%. По сравнению с 2018 г., когда почти во всех пробах было обнаружено высокое содержание частиц PM10, доходившее до 57,2%, наблюдается тенденция к снижению содержания потенциально опасной для здоровья фракции атмосферной взвеси. В пробах снега, собранных в Петропавловске-Камчатском и Елизово, обнаружены опасные для здоровья человека частицы фракций PM1 и PM10, хотя их содержание, в целом, ниже, чем в предыдущие годы исследования. Ключевые слова: атмосферная взвесь, Петропавловск-Камчатский, Елизово, PM10, загрязнение атмосферного воздуха
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