[Enrichment characteristics and source apportionment of polycyclic aromatic hydrocarbons (PAHs) in pine (Pinus massoniana lamb) needles from parks in Nanjing City, China].
The concentrations of 15 polycyclic aromatic hydrocarbons (PAHs) in pine (Pinus massoniana Lamb) needles from 8 urban parks in Nanjing City (China) were determined using High Performance Liquid Chromatography, and the source apportionment of PAHs in pine needles was studied using diagnostic ratios. The results show that the total PAHs concentrations (sigma PAHs) accumulated in needles from different parks ranged from 909.8 (Linggu Temple) to 2 129.6 ng x g(-1) (Mochou Lake), with an average of 1438.0 ng x g(-1). The PAHs in pine needles mainly associates with 2,3-ring PAHs and 4-ring PAHs, accounting for 66.4% and 29.6% of the sigma PAHs, respectively, while 5,6-ring PAHs only accounts for 4% of the sigma PAHs. Phenanthrene is the dominant PAH with an average concentration of 591.4 ng x g(-1). The average concentration of Benzo (a) pyrene, the most carcinogenic PAH, is 5.1 ng x g(-1). The source apportionment indicates that vehicle emission is the predominant source for PAHs in the pine needles.
Wang
Fu-wang
FW
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. fwwang@issas.ac.cn
Wang
Fang
F
Yang
Xing-lun
XL
Bian
Yong-rong
YR
Jiang
Xin
X
D000327:Adsorption; D002681:China; D002947:Cities; D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000032:analysis* / Q000378:metabolism; D028223:Pinus / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000378:metabolism
D004785:Environmental Pollutants; D011084:Polycyclic Aromatic Hydrocarbons