17:15 〜 19:15
[ACG39-P13] Assessment of black carbon concentrations at the EANET Listvyanka observation station.
キーワード：black carbon, climate, climatically active substances, environmental monitoring
Black carbon (BC) is a key component of atmospheric aerosols, a tiny soot particle formed through the incomplete combustion of fossil fuels, biomass, and other organic substances. The analysis and monitoring of BC is crucial for comprehending its influence on climate change and human health. However, in Russia, the mandatory inclusion of BC in environmental monitoring systems is currently lacking. This regulatory gap poses challenges in accurately measuring emissions, making it difficult to accurately predict the long-term consequences of BC on climate.
Between June 14th and August 3rd, 2023, a series of daily atmospheric air samples were collected using Teflon filters at the EANET Lisvyanka station in the Irkutsk Region. A total of 44 samples were obtained during this period, which were subsequently transferred to the laboratory of the Institute of Global Climate and Ecology for further analysis.
The analysis of these samples was conducted using a Shimadzu TOC-L instrument, which allowed for the determination of their total carbon content and organic carbon fractions. The non-purgeable organic carbon method was employed to quantify the mass concentration of organic matter in each sample, providing a comprehensive understanding of the distribution of organic carbon across the samples.
The range of organic carbon concentration, often referred to as soot or black carbon, varied between 0.646 and 21.099 μg/m3, with an average value of 3.846 μg/m3. The highest levels of black carbon were recorded on June 24th, July 10th, and July 17th, amounting to 21.099, 9.792, and 10.205 μg/m3, respectively. The elevated levels of black carbon commonly coincide with periods marked by forest fires in the area. To gain a deeper comprehension of the influence exerted by these elevated concentrations of black carbon upon the Baikal environment, it is crucial to maintain continuous monitoring and measurement of this substance's presence in the atmosphere.
Between June 14th and August 3rd, 2023, a series of daily atmospheric air samples were collected using Teflon filters at the EANET Lisvyanka station in the Irkutsk Region. A total of 44 samples were obtained during this period, which were subsequently transferred to the laboratory of the Institute of Global Climate and Ecology for further analysis.
The analysis of these samples was conducted using a Shimadzu TOC-L instrument, which allowed for the determination of their total carbon content and organic carbon fractions. The non-purgeable organic carbon method was employed to quantify the mass concentration of organic matter in each sample, providing a comprehensive understanding of the distribution of organic carbon across the samples.
The range of organic carbon concentration, often referred to as soot or black carbon, varied between 0.646 and 21.099 μg/m3, with an average value of 3.846 μg/m3. The highest levels of black carbon were recorded on June 24th, July 10th, and July 17th, amounting to 21.099, 9.792, and 10.205 μg/m3, respectively. The elevated levels of black carbon commonly coincide with periods marked by forest fires in the area. To gain a deeper comprehension of the influence exerted by these elevated concentrations of black carbon upon the Baikal environment, it is crucial to maintain continuous monitoring and measurement of this substance's presence in the atmosphere.