%0 Journal Article
%T Free and Bound PAHs in a Sediment Core from Nam Van Artificial Lake of Macao<br>澳门南湾湖钻孔沉积物中自由态和束缚态的多环芳烃
%A HAO Yong-mei
%A LI Chun-lei
%A LUO Xiao-jun
%A MAI Bi-xian
%A SHENG Guo-ying
%A FU Jia-mo
%A <br>郝永梅
%A 李春雷
%A 罗孝俊
%A 麦碧娴
%A 盛国英
%A 傅家谟
%J 环境科学
%D 2006
%I 
%X To study the posts-depositional behaviors of organic pollutants in natural conditions, concentrations and distributions of free and bound PAHs in a sediment core from Nam Van artificial Lake of Macao were investigated. Result indicate that free PAHs are predominated by 4-ring, 6,7-ring, and 5-ring PAHs, with the mass percentages of 28.7% to approximately 40.6%, 17.6% to approximately 29.6%, and 13.2% to approximately 28.2%, respectively, and for bound PAHs, the main components are 4-ring, 3-ring, and 2-ring ones, with mass percentages 42.3% to approximately 55.8%, 20.2% to approximately 35.8%, and 7.8% to approximately 18.8%, respectively, which suggeste that PAHs with low molecular weight are more prone to entering the micro-pores of sediment organic matters. Vertical profile of free PAHs concentrations in sediment core, to some degree, is correlated with the degree of regional economy development and the proceeding of environmental management. The concentrations of bound PAHs in the sediment core are controlled by the total PAHs mass input to the sediments and the structure (especially the polymerization) of sediment organic mater. The sediment burying favors the transformation of free form to bound form for PAH compounds.
%K sediment core
%K PAHs
%K free and bound
%K Macao<br>钻孔沉积物
%K 多环芳烃
%K 自由态与束缚态
%K 澳门
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=854186AD5CD3697C&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=0B39A22176CE99FB&sid=6CCE24D86D03D083&eid=C812B90E96151014&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=24