运用SEdEX方法分析了浙江近岸海域表层沉积物中总磷(TP)及磷在各提取相的含量和分布.研究结果表明,表层沉积物中TP含量为432.2~846.1Mg/kg,平均为(533.2±90.1)Mg/kg;弱吸附态磷(AdS-P)、铁结合态磷(fE-P)、自生磷灰石及钙结合态磷(CA-P)、碎屑态磷(dE-P)和有机磷(OP)平均含量分别为6.2,93.2,12.4,295.0和66.5Mg/kg,分别占TP的1.2%,17.7%,2.4%,56.7%,和12.7%.沉积物的AdS-P、CA-P和OP与其粒度和有机碳含量呈显著正相关,dE-P则呈负相关.各站位沉积物中磷在不同提取相中的含量差异较大,与沉积物的陆源输入、沉积物粒径及沉积海域的水动力条件等因素有关.Total phosphorus and its related forms in the surface sediment in Zhejiang offshore were studied by SEDEX method.The results showed that the content of total phosphorus(TP) in the surface sediment was 432.2-846.1 mg/kg,and average content was(533.2±90.1) mg/kg,and the average content of weakly absorbed phosphorus(Ads-P),iron phosphorus(Fe-P) calcium phosphorus(Ca-P),detritus phosphorus(De-P) and organic phosphorus(OP) were 6.2,93.2,12.4,295.0 and 66.5 mg/kg,respectively,and the percentage composition of TP were 1.2%,17.7%,2.4%,56.7% and 12.7%,respectively.The content of different forms of phosphorus in different sites was mainly influenced by terrigenous inputs,sediment grain size and hydro-dynamics.There are significant positive correlations between sediment grain size,organic carbon and Ads-P,Ca-P,OP;and negative correlations between sediment grain size,organic carbon and De-P.浙江省环保科研计划项目(2008-30
