THE CHANGE IN TEMPORAL AND SPATIAL ANALYSIS VARIATION OF NO2 CONCENTRATION IN CIBEUNYING KIDUL DISTRICT, BANDUNG CITY

• Main Author: Ryamanda Hidayat, Raissa
• Format: Final Project
• Language: Indonesia
• Subjects: Sistem
• Online Access: https://digilib.itb.ac.id/gdl/view/77838
• Institution: Institut Teknologi Bandung

The increase in population is related to an increase in needs such as housing and transportation. The number of vehicles in 2023 in the city of Bandung is almost approaching the total population, which is 2.2 million units, representing an increase in the number of vehicles compared to 2010, when there were 1.2 million units. The transportation sector contributes to 70–83% of air pollutant concentrations, with more than 50% of the pollutants being nitrogen oxides (NOx). In this study, the concentration of NO2 was measured using passive samplers in the Cibeunying Kidul District, Bandung. Measurements were taken at 37 points distributed throughout the study area for six weeks. The analysis showed that the average precision of the passive samplers was 93.1%. The NO2 concentration range for 6 weeks was determined using a Z-test with ?=0.05, which was 89.7 ± 2.2 µg/m3 . Temporal analysis was conducted to observe the trend in NO2 concentration values in 2023 compared to the 2010 study, showing an upward trend in NO2 concentration in 2023. Spatial analysis using the Kriging Method resulted in an RMSE value of 32.5 µg/m3 , SD of 32.43 µg/m3 , and a %RMSE of 36.12%. The %RMSE value is still below 50%, indicating that the interpolation results in this study are within the validity limits of the Kriging method. The increase in NO2 concentration is in line with the increasing trend in the number of vehicles in Bandung and is consistent with previous research indicating a positive correlation between vehicle volume and NO2 concentration.