Polycyclic aromatic hydrocarbons in soils in the vicinity of Nanjing, China

The occurrence and distribution of polycyclic aromatic hydrocarbons (PAHs) in vegetable soils from five vegetable fields (including: Liuhe, Xixia, Pukou, Jianye and Yuhua districts) in Nanjing outskirt were investigated with high performance liquid chromatography (HPLC) equipped with fluorescence de...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2008-09, Vol.73 (3), p.389-394
Main Authors: Yin, Chun-Qin, Jiang, Xin, Yang, Xing-Lun, Bian, Yong-Rong, Wang, Fang
Format: Article
Language:English
Subjects:
agricultural soils
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
China
Distribution
Ecotoxicology, biological effects of pollution
Fundamental and applied biological sciences. Psychology
General aspects
horticultural soils
PAHs
polycyclic aromatic hydrocarbons
Polycyclic Compounds - analysis
Soil contamination
Soil Pollutants - analysis
soil pollution
Source
Terrestrial environment, soil, air
vegetable growing
Vegetable soil
vegetable soils
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Summary:The occurrence and distribution of polycyclic aromatic hydrocarbons (PAHs) in vegetable soils from five vegetable fields (including: Liuhe, Xixia, Pukou, Jianye and Yuhua districts) in Nanjing outskirt were investigated with high performance liquid chromatography (HPLC) equipped with fluorescence detector. The total concentrations of 15 priority PAHs in 126 soil samples ranged from 21.91 to 533.84 ng g −1 dry weight, and the sum of seven carcinogenic PAHs concentrations varied from 1.48 to 236.19 ng g −1 dry weight. Statistical analysis of the PAHs concentrations showed that the highest PAHs concentration was observed in Liuhe, and the lowest PAHs concentrations were found in Xixia among the five districts. The ratios of fluoranthene to sum of fluoranthene and pyrene concentrations (Flt/(Flt + Pyr)) were more than 0.5 in 99% of vegetable soil samples, showing that the PAHs in soils were generally derived from straw and coal combustion sources. The results from principal component analysis (PCA) further indicated that extensive combustion activities affected the PAHs distribution in Nanjing vegetable soils.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2008.05.041