#TITLE_ALTERNATIVE#

• Main Author: ANGGARA WIDARTO (NIM : 15309041), SURYA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24421
• Institution: Institut Teknologi Bandung

Oxidant is secondary pollutant in the atmosphere that is produced by photochemical process involving sunlight. It is widely acknowledged that more than 90% of total oxidant present in the form of ozone, so that commonly monitoring result of oxidants is expressed in levels of ozone. Ozone is measured using chemiluminescence method. While oxidant is measured by NBKI (Neutral Buffer Potassium Iodide), This study aimed to find the ratio of ozone in oxidant in DKI Jakarta. The sampling has been done in Bunderan Hotel Indonesia, Jl. M.H. Thamrin. In addition, the correlation with NOx concentration was also investigated. NBKI measurement Result show oxidant concentration in parabolic graph with peak concentration occured at 10:00 14:00 coinside with high intensity of sunlight. On average, ratio ozone in oxidants were 80,11%. Concentration of oxidants and ozone show strong linier correlation, with Pearson-correlation coefficient of 0.906 (p=0), ranging from 0.81 to 1.00. In this study area, ozone can not fully represent oxidant concentration as is shown from the result of indipendent t-test that value of oxidant and ozone concentrations are significantly different with t=0,002 (significant at α=95%, p=0,05). There are correlation between the precursors and meteorological factors on the concentration of oxidants and ozone. The concentration of ozone is quite closely related to NMHC (Non Methane Hydrocarbon) for R=-0.570 (p=0,02) and global radiation R=0.597(p=0,001). Oxidant concentration is closely related to global radiation R=0,699(p=0). While quite closely related to NMHC R=-0.481 (p=0,01) and humidity R=-0.472(p=0,015).