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| Analysis of Contents and Sources of Polycyclic Aromatic Hydrocarbons in Vegetable Production Base of Nanning City |
| LONG Ming-hua1，LONG Biao1，LIANG Yong-sheng1，2，WU Gui-fen1，ZHANG Hui-na1，3，TANG Xuan1，LI Peng-xin1，ZHANG Hui-min1 |
1 College of Agronomy，Guangxi University，Nanning 530004，Guangxi，China；2 Nanning City Vegetable Research
Institute，Nanning 530000，Guangxi，China；3 Guangxi Agricultural Vocational College，Nanning 530007，Guangxi，
China |
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Abstract The contents and sources of 16 kinds of polycyclic aromatic hydrocarbons（PAHs），which are on
the list of priority control PAHs stated by USEPA，in soils from 4 traditional vegetable production bases of Nanning
City were analyzed by HPLC. The result showed that the content ranges of PAHs in soils of vegetable production
bases of Nanning City were 2 632.00～5 002.43 μg·kg-1 dry weight and the average value is 3 351.30±1 110.72
μg·kg-1. The PAHs pollution in soils was in severe polluted level. Most of PAHs in soil contained 2～4 aromatic
rings，and the content took 85.72% of the total PAHs content，among which PAHs of 3 aromatic rings occupied
the largest proportion 54.62%. The PAHs in vegetable production soil of Nanning City were mainly due to the
burning of biomass and fossil fuel and emission of motor vehicle exhaust.
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Received: 11 October 2016
Published: 23 December 2016
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