巢湖入湖河流沉积物中有机磷的形态分级研究  

Characteristics of organic phosphorus fractions in sediments of inflow rivers of Lake Chaohu,China

作　　者：李强[1,2] 尹俊华[1] 席北斗[2] 王晓伟[2,3] 任雨晴 谭远友[1] 

机构地区：[1]武汉纺织大学环境工程学院,武汉430073 [2]中国环境科学研究院,北京100012 [3]北京师范大学环境学院,北京100875

出　　处：《环境工程学报》2014年第2期441-447,共7页Chinese Journal of Environmental Engineering

基　　金：国家"水体污染控制与治理"科技重大专项(2009ZX07106-001)

摘　　要：为识别巢湖流域污染物的特征、来源及其沉积物有机磷各形态分布与富营养化的关系,测定了7条巢湖入湖河流沉积物中有机磷各形态的含量,分析不同污染类型入湖河流沉积物中有机磷各形态分布的差异及与其他因素间的相关性。研究发现,不同污染类型入湖河流沉积物中水土保持控制型河流沉积物中有机磷各组分的相对含量顺序为残渣态P o>富里酸-P o>HCl-P o>胡敏酸-P o>NaHCO3-P o,平均的相对比例为7.5∶3.1∶1.9∶1.5∶1.0,而城市污染控制型和面源污染控制型河流沉积物中有机磷各组分的相对含量顺序恰好相同,面源污染控制型河流沉积物P o各形态含量低于城市污染控制型和水土保持控制型河流。中活性P o和OM、TP、P i、P o、TN、NaHCO3-P i、NaOH-P i呈正相关,非活性P o与P o、NaOH-P i呈显著正相关关系,反映了中活性P o很容易转化为生物可利用磷和非活性P o,且非活性P o仍然具有潜在的生物活性。In order to identify the characteristics and sources of pollutants in Lake Chaohu Basin, as well as the relationship between eutrophication and distribution of organic phosphorus forms, the contents of various forms of organic phosphorus in sediments from seven inflow rivers of Lake Chaohu were determined, and analyses were given respectively on the distribution differences of various forms of organic phosphorus in the sediments of inflow rivers with different pollution types, and the relationship with other factors. The results show that the rela- tive content order of Po fractions is residual Po 〉 fulvic acid-Po 〉 HCl-Po 〉 humic acid-Po 〉 NaHCO3-Po in sedi- ments of soil and water conservation river, with the relative proportion of average： 7.5： 3.1： 1.9： 1.5： 1.0. The relative content order of Po fractions in sediments of urban pollution and non-point source pollution rivers is nearly identical, and the content of Po fractions in non-point source pollution rivers is lower than urban pollution and soil and water conservation rivers. The study finds that the middle labile Po is correlated with OM, TP, Pi, Po, TN, NaHCO3-Pi and NaOH-Pi. Furthermore, nonlabile Po is significantly correlated with Po and NaOH-Pi. They re- fleet that the middle nonlabile Po may easily convert into bioavailable phosphorus and nonlabile Po, while non- labile Po still has the potential of bioavailable.

关 键 词：巢湖 入湖河流 沉积物 有机磷 形态 

分 类 号：X52[环境科学与工程—环境工程]