Source Analysis and Health Risk Assessment of PAHs in PM2.5, Lüliang City

To investigate the seasonal variation, health risks, and potential sources of polycyclic aromatic hydrocarbons(PAHs) in PM2.5 in the Lüliang area, PM2.5 samples were collected in Lishi District(downtown area) and Xiaoyi City(suburban area) from October 23, 2018 to July 1, 2019, and the concentrations of 14 PAHs were determined using gas chromatography-mass spectrometry(GC-MS). The annual average concentration of PAHs was 95.50 ng·m-3, and the concentration of 5-6 ring PAHs was mainly(49.7%), with 3 ring PAHs accounting for a relatively low proportion(8.3%).The concentration of PAHs in Lüliang City showed a seasonal pattern of winter>autumn>spring>summer. The results of the ILCRs model and Monte Carlo simulation showed that the toxicity of PAHs in Lüliang City followed the rule of adults>youth>children. Except in summer, the ILCRs values in the Lishi area were between 10-6 and 10-4, much higher than those in Xiaoyi City, indicating that there was a high potential risk of polycyclic aromatic hydrocarbons in the urban area. Through the characteristic ratio method and positive matrix factorization(PMF), it was shown that the PAHs in Lüliang City were mainly from the combustion of coal and biomass(61.9%) and vehicle exhaust emissions(38.1%). Based on the backward trajectory and potential source factor contribution analysis model, it was determined that the potential sources of PAHs in Lüliang City were mainly distributed in southern Shanxi, northern Shaanxi, and western Inner Mongolia.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:44

Enthalten in:

Huan jing ke xue= Huanjing kexue - 44(2023), 12 vom: 08. Dez., Seite 6508-6517

Sprache:

Chinesisch

Beteiligte Personen:

Mu, Ling [VerfasserIn]
Liu, Zi-Ye [VerfasserIn]
Li, Yang-Yong [VerfasserIn]
Li, Xue-Mei [VerfasserIn]
Li, Xiao-Fan [VerfasserIn]
Liu, Tian [VerfasserIn]
Feng, Chuan-Yang [VerfasserIn]
Jiang, Xin [VerfasserIn]

Links:

Volltext

Themen:

Air Pollutants
Coal
English Abstract
Health risk assessment
Journal Article
Lüliang City
Particulate Matter
Polycyclic Aromatic Hydrocarbons
Polycyclic aromatic hydrocarbons(PAHs)
Seasonal variation
Source analysis
Vehicle Emissions

Anmerkungen:

Date Completed 16.12.2023

Date Revised 16.12.2023

published: Print

Citation Status MEDLINE

doi:

10.13227/j.hjkx.202210067

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM365890642