A prediction model of polycyclic aromatic hydrocarbon quarterly emissions based on GDP from a government policy perspective

Abstract

Polycyclic aromatic hydrocarbons (PAHs) are a kind of carcinogenic, teratogenic and mutagenic pollutants that exist widely. In this study, a quarterly emission inventory of 16 PAHs listed as the US EPA priority pollutants was established by using the emission factor (EF) method. The results showed that the distribution of PAHs in different industries varied greatly with different year and quarter. The main characteristics of PAHs seasonal emission are that Q1 emission is the most and Q4 emission is the least. Among them, naphthalene and phenanthrene are the most important compounds. There are significant differences in PAHs emissions from different sources. Traffic and civil use emissions are the main sources. For example, in 2019, traffic emissions accounted for 20.9% and civil use emissions accounted for 78.3% of the total emissions. Then, a linear multiple regression model was established to predict the quarterly emission of PAHs. A vector autoregressive (VAR) approach was applied to analyse the correlation between the gross domestic product (GDP) and other macroeconomic parameters. This study could be used as a guide to provide recommendations for government policy and macro-control efforts.

Insights into the house dust-bound polycyclic aromatic hydrocarbons and their potential human health risk in Greater Cairo, Egypt

“…9,10 PAHs belong to a group of semi-volatile organic compounds (SVOCs) and occur as gaseous and particulate phases and as deposited dust. [11][12][13][14][15][16][17] They are typically generated during incomplete combustion, mainly under conditions of high humidity and insufficient temperature and oxygen. 18,19 PAHs with 2-4 aromatic rings occur in the gaseous phase, whereas PAHs with 4-6 aromatic rings exist in the particulate phase.…”

Multiscale analysis of material flow and computational fluid dynamics for predicting individual diethyl-hexyl phthalate exposure concentration in indoors

“…Since various products containing SVOCs are regularly used within an indoor environment, epidemiological and toxicological studies on their potential adverse impacts on the health of indoor residents have been reported. [4][5][6] For instance, in 2005, the National Institute of Advanced Industrial Science and Technology (AIST) published a detailed DEHP risk assessment in Japan. 7 According to this risk assessment, DEHP intake occurs primarily via ingestion of food products, with the highest assumed intake for 1-year old children being 21.7 μg/kg/d.…”