Analisis Kualitas No2 dalam Ruang pada Perparkiran Basement dan Upper Ground ( Studi Kasus : Mall X, Semarang)

摘要

Nitrogen dioxide ( NO2 ) is a corrosive and oxidizing reddish - orange - brown gas with a characteristic pungent odor . The largest sources of NO2come from vehicles gas emissions. The amount of NO2 in excessive concentrations (5 ppm) can cause negative impacts for human health , especially cause irritation of respiratory system . Parking area is risk location againts air pollution by vehicle gas emissions because the parking area is a gathering place for vehicles , especially in indoor parking area. Research do in the basement parking area and the upper ground on the Mall X Semarang where both areas have the difference in the ventilation system . Basement using mechanical ventilation while the upper ground area using natural ventilation . The purpose of this study is to compare the concentration of NO2 in the basement parking area with the upper ground area and to analyze the relationship between the number of vehicles , temperature , humidity , and wind speed against concentrations of NO2 . Total exposure of NO2 also calculateto determine how long the parking employee Mall X Semarang can be negatively impact by NO2 . The results of the study conclude that the concentration of NO2 in the basement is higher than the upper ground and both are still below the ambient air quality standard for NO2(316 μg/Nm3 by Central Java Governor Decree No. 8 , 2001) . There is a significant relationship between the number of vehicles , temperature , and wind speed against concentrations of NO2 . Parking employee of Mall X Semarang can be negatively impact by NO2after 142 working days on basement and 222 working days on the upper ground.