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Chinese Journal of Applied Ecology ›› 2001, Vol. ›› Issue (5): 769-772.

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A preliminary study on benzo(a)pyrene in selected municipal sludges and soils

CAI Quanying1, MO Cehui1, WU Qitang1, LI Guirong1, WANG Boguang2, TIAN Kai2, LI Tuo2   

  1. 1. College of Resources and Environment, South China Agricultural University, Guangz hou 510642;
    2. Guangzhou Institute of Environmental Science, Guangzhou 510620
  • Received:2001-02-09 Revised:2001-05-16 Online:2001-09-25

Abstract: Benzo(a)pyrene in municipal sludges and four types of soils from eleven selected cities in China were determined by GC MS.The results showed that the contents of b enzo(a)pyrene in sludges ranged from 0.007 to 6.578mg穔g-1 and averaged 1. 272mg穔g-1.Most of them were lower than 1.0mg穔g-1,and only two of them were higher than 3.0mg穔g-1,which was a limit value of benzo(a)pyre ne in sludge applied to agricultural land in China.On the other hand,the content s of benzo(a)pyrene in cinnamon soil,paddy soil,calcareous soil,and latosolic re d soil were 2.138mg穔g-1,0 782mg穔g-1,0.664mg穔g-1,and und er detection limit respectively.The content of benzo(a)pyrene in different munic ipal sludge was mainly related to sources of wastewater,wastewater treating met hods,sludge types,while in soils,it was mainly to parent,air pollution,wastewate r irrigation,and sewage sludge application.

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