%0 Journal Article
%T Characteristics of phosphorus fractionated from the sediment resuspension in abrupt expansion flow experiments<br>
%A Jun Wan
%A Ze Wang
%A Hezhong Yuan
%A <br>
%J 环境科学学报(英文版)
%D 2010
%I 
%X Phosphorous (P) fraction characteristics in sediment resuspension were investigated under adequately hydrodynamic conditions. Four forms of P in overlying water, including dissolved inorganic P, dissolved total P, total P, and particulate P, and six fractions of P in suspended particulate matter (SPM), including loosely sorbed P (NH4Cl-P), redox-sensitive P (BD-P), aluminum-bound P (Al- P), organic P (NaOH-nrP), calcium-bound P (Ca-P) and residual P (Res-P), were quantified, respectively. Di erent hydrodynamic conditions resulted in di erent P form changes. Four states could be ascribed: (1) P desorption by sediment and SPM, and P adsorption by overlying water; (2) P desorption by SPM, and P adsorption by overlying water; (3) P adsorption by SPM, and P desorption by overlying water; and (4) P equilibrium between SPM and overlying water. The contents of P in overlying water acquired peak values in the middle position of the vertical P distribution due to the combined actions of SPM and sediment. P fractions in SPM were in the following order: BD-P > NaOH-nrp > Ca-P > Al-P > Res-P > NH4Cl-P. BD-P in SPM frequently exchanged with P forms in overlying water. Resuspension was favorable to forming Ca-P in SPM.
%K phosphorus fractions
%K hydrodynamic conditions
%K suspended particulate matter
%K abrupt expansion flow<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=45F6FCAFB1D4BA784B3F9ED2722BC349&yid=140ECF96957D60B2&vid=BC12EA701C895178&iid=F3090AE9B60B7ED1&sid=DEEC1AC3B6D3EB96&eid=28652329520A4AA7&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=33