浙北地区PM2.5中多环芳烃特征

Translated title of the contribution: Characteristics analyses of PAHs in PM2.5 in the northern Zhejiang province.

Hong Hui Xu, Jingsha XU, Jun He, Jing Jiao Pu, Ke Ai Yu

Research output: Journal PublicationArticlepeer-review

2 Citations (Scopus)

Abstract

To investigate the seasonal variations and sources of polycyclic aromatic hydrocarbons (PAHs) in fine particles (PM2.5) in the northern Zhejiang province (NZP), one year-long field PM2.5 sampling was conducted at four representative sites in both cities of Hangzhou and Ningbo from December 2014 to November 2015 and in total 17 PAHs were analyzed by GC-MS. The results showed that the total annual averaged concentration of all these 17 PAHs ranged from 24.1 to 51.9ng/m3 with an average of (35.5±12.3) ng/m3. Basically, 2~3 rings PAHs were observed in low abundance in particle phases (<1ng/m3), while 4~6rings PAHs accounted for 77.0% of total particulate PAHs. The total concentration of 17 PAHs followed a similar seasonal trend to that of PM2.5, showing the highest total PAHs concentration in winter while lowest in summer among four seasons. As a tracer for soft wood burning, the concentration of retene was quadruple in winter compared to that in summer, indicating the increased contribution from soft wood burning in NZP. Except at two urban sites during summer, moderate positive correlations were found between OC and PAHs. The PAHs diagnostic ratios implied that aerosols related PAHs in NZP were not significantly contributed by traffic emissions and petrogenic sources, but mainly originated from pyrogenic sources, such as biomass burning and coal combustion.

Translated title of the contributionCharacteristics analyses of PAHs in PM2.5 in the northern Zhejiang province.
Original languageChinese (Traditional)
Pages (from-to)3247-3253
Number of pages7
JournalZhongguo Huanjing Kexue/China Environmental Science
Volume38
Issue number9
Publication statusPublished - 20 Sep 2018

ASJC Scopus subject areas

  • Environmental Science (all)

Fingerprint

Dive into the research topics of 'Characteristics analyses of PAHs in PM2.5 in the northern Zhejiang province.'. Together they form a unique fingerprint.

Cite this