%0 Journal Article
%T Phosphate Adsorption Characteristics of Tidal Flat Surface Sediments and Its Environmental Effect from the Yangtze Estuary<br>长江河口潮滩表层沉积物对磷酸盐的吸附特征
%A LIU Min
%A HOU Lijun
%A XU Shiyuan
%A OU Dongni
%A ZHANG Binliang
%A LIU Qiaomei
%A YANG Yi
%A <br>刘敏
%A 侯立军
%A 许世远
%A 欧冬妮
%A 张斌亮
%A 刘巧梅
%A 杨毅
%J 地理学报
%D 2002
%I 
%X Adsorption of phosphate (PO 4 -P) on sediments taken from the Yangtze estuarine and coastal tidal flats were determined in laboratory. The results indicate that the process of phosphorus adsorption onto sediments mainly occurs within 0-10 h, and then attends to a dynamic equilibrium. Maximum adsorption rates occurred within 0-0.5 h, ranging from 10.40 to 56.40 mg/kgh. The adsorption rates were obviously influenced by the concentration levels of fine particles. Adsorption isotherm curves were fitted to modified Langmuir's equation. Adsorption capacities varied from 26.32 to 204.08 mg/kg, showing good affinities for Fe 3+ and total organic carbon (TOC) concentrations. The adsorption efficiency of phosphate on sediments ranged from 21.55 to 248.30 L/kg, showing close correlation with TOC concentrations. Furthermore, the correlation between environmental factors and phosphate adsorption was presented in this experiment, indicating that temperature, pH and salinity have obvious effects on phosphate adsorption.
%K PO4 -P
%K adsorption
%K rate
%K adsorption
%K capacity
%K adsorption
%K efficiency
%K surface
%K sediments
%K the Yangtze Estuary<br>硝酸盐
%K 吸附速率
%K 吸附容量
%K 吸附效率
%K 表层沉积物
%K 长江河口
%K 磷
%K 温度
%K 盐度
%K 潮滩
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=F7B5B947C24B9D649491012214E4BEF4&aid=0D9E0AD441BC7BED&yid=C3ACC247184A22C1&vid=11B4E5CC8CDD3201&iid=E158A972A605785F&sid=21D8CE17EE5EE354&eid=DA74B62FE4348759&journal_id=0375-5444&journal_name=地理学报&referenced_num=42&reference_num=30