09:00 〜 10:30
[ACG35-P08] Implementing of possible methods of Black Carbon sampling at Russia EMEP site Danki
キーワード：Black Carbon, Methodology, Background monitoring
Despite the proven influence on climate change, Black carbon (BC) is still not mandatory for environment monitoring in Russia. It leads to complications for the emission inventory and makes almost impossible predictions of the long-term impact of BC on climate. Thus, starting from 2021, as part of the Expert Group on Black Carbon and Methane (EGBCM), the establishment of a BC monitoring network in Russia has started.
At present, a series of experiments on BC air sampling with usual filter material (by variations of sampling velocity, sampling duration, implemented equipment, etc.) were conducted. In addition, the possibilities of implementing existing methods (certified in Russia) of soot mass concentration were explored for the analysis of samples obtained from the background territories is under study.
In 2022, daily samples on cellulose filters with the sampling rate of 1 NLPM (normal liter per minute) were taken from February to October at the EMEP site Danki. The mass concentration of soot on the filters was determined by the photometric method. As part of the experiment, the spectral ranges for soot concentration measurements were also refined using IR spectroscopy methods.
Experiment results revealed that the present method is not suited for determining the content of BC at non-city area conditions as the pore size of used cellulose filters is much larger than the size of BC particles. It was proposed to continue the experiments with the usage of alternative membrane or glass fiber filters instead of cellulose filters with different ranges of sampling velocities in 2023.
At present, a series of experiments on BC air sampling with usual filter material (by variations of sampling velocity, sampling duration, implemented equipment, etc.) were conducted. In addition, the possibilities of implementing existing methods (certified in Russia) of soot mass concentration were explored for the analysis of samples obtained from the background territories is under study.
In 2022, daily samples on cellulose filters with the sampling rate of 1 NLPM (normal liter per minute) were taken from February to October at the EMEP site Danki. The mass concentration of soot on the filters was determined by the photometric method. As part of the experiment, the spectral ranges for soot concentration measurements were also refined using IR spectroscopy methods.
Experiment results revealed that the present method is not suited for determining the content of BC at non-city area conditions as the pore size of used cellulose filters is much larger than the size of BC particles. It was proposed to continue the experiments with the usage of alternative membrane or glass fiber filters instead of cellulose filters with different ranges of sampling velocities in 2023.