Sustainability, Год журнала: 2025, Номер 17(5), С. 2077 - 2077
Опубликована: Фев. 27, 2025
Noise level and atmospheric pollutants such as particulate matter (PM) combustion gases depend on car traffic. A highly circulated area in Cluj-Napoca City (Romania) was investigated based sustainable principles. The noise at the source about 77 dB due to intense traffic of 214 units/10 min including cars, buses, trucks pedestrians. It decreased slowly 62 proximity first wall from roadside (20 m distance) significantly 50 beyond buildings near road (135 source). correlated with a high pollutant emission source: 25 µg/m3 (PM2.5), 45 (PM10) 1.023 (total volatile organic compounds (TVOCs)). PM10 38 µg/m3, while PM2.5 remained 22 TVOC slightly 0.974 distance 10 road. levels 5 18 (PM2.5) 135 road, also 0.705 µg/m3. PM crystalline structure by XRD coupled mineralogical microscopy. Microstructure elemental composition were assessed via high-resolution SEM EDS spectroscopy. found that dominated finest clay fraction (e.g., kaolinite muscovite), quartz calcite. large amount adsorbed onto particles FTIR correlation between emissions sound intensity indicates extended for long time facilitates ultra-structural sustentation into atmosphere. number nanoparticles (kaolinite 40 nm muscovite 60 nm) detected AFM samples collected source, becoming sparser source.
Язык: Английский