%0 Journal Article
%T Distribution Characteristics and Sources Identification of PAHs in Ancient Paddy Soil<br>古水稻土中多环芳烃的分布特征及其来源判定
%A LI Jiu-hai
%A DONG Yuan-hu
%A CAO Zhi-hong
%A WANG Hui
%A AN Qiong
%A HU Zheng-yi
%A ANG Lin-zhang
%A LIN Xian-gui
%A YIN Rui
%A <br>李久海
%A 董元华
%A 曹志洪
%A 王辉
%A 安琼
%A 胡正义
%A 杨林章
%A 林先贵
%A 尹睿
%J 环境科学
%D 2006
%I 
%X Soil samples of current paddy soils, ancient paddy soil/ancient dry land soil, and bottom soils were collected from two sites in Chuodunshan Site of Majiabang Culture (about 6,000a). 15 polycyclic aromatic hydrocarbons (PAHs) were analyzed with HPLC, and their possible sources were identified. The sum of 15 PAHs was 202.9microg x kg(-1) and 207.7microg x kg(-1) in the surface soils from Site A and Site B respectively, which were mainly deposited from atmosphere. In ancient paddy soil from Site A, the total PAHs concentration sharply decreased to 56.0microg x kg(-1), but was still higher than those in ancient dry land soil and bottom soils with the sum of 32.0 approximately 36.9microg x kg(-1). In ancient paddy soil, the concentrations of 2-ring and 3-ring PAHs took a larger portion of 63 percents to the total PAHs, and naphthalene and phenanthrene were the most abundant compounds, while PAHs of more than 4 rings took a small part. The ratios of phenanthrene anthracene and benzo(a) anthracene chrysene and 13C-NMR spectrum of soil organic matter showed that PAHs in ancient paddy soil mainly originated from rice straw burning, biogenesis under reducing conditions may be another source.
%K ancient paddy soil
%K PAHs
%K sources
%K rice straw burning
%K biogenesis<br>古水稻土
%K 多环芳烃
%K 来源
%K 稻草焚烧
%K 生物合成
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=762E8C25735E6E7A&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=B31275AF3241DB2D&sid=A31F2945A5873795&eid=1C7C31A28F5ECC6F&journal_id=0250-3301&journal_name=环境科学&referenced_num=8&reference_num=30