环境科学导刊
環境科學導刊
배경과학도간
ENVIRONMENTAL SCIENCE SURVEY
2014年
5期
18-21
,共4页
白晓华%李丰超%秦小萍
白曉華%李豐超%秦小萍
백효화%리봉초%진소평
弥苴河%河口%表层沉积物%磷%吸附特性%洱海
瀰苴河%河口%錶層沉積物%燐%吸附特性%洱海
미저하%하구%표층침적물%린%흡부특성%이해
Miju River%estuary%surface sediments%phosphorus adsorption%characteristics%Erhai Lake
以洱海主要入湖河流弥苴河的河口表层沉积物为实验对象，研究其磷吸附特性。研究结果表明，Elovich方程对沉积物吸磷动力学拟合较好，考虑沉积物原有吸附态磷的修正Langmuir方程能较好描述弥苴河河口表层沉积物等温吸附特性。弥苴河河口沉积物存在释磷风险，沉积物间隙水正磷浓度远高于临界磷平衡浓度。
以洱海主要入湖河流瀰苴河的河口錶層沉積物為實驗對象，研究其燐吸附特性。研究結果錶明，Elovich方程對沉積物吸燐動力學擬閤較好，攷慮沉積物原有吸附態燐的脩正Langmuir方程能較好描述瀰苴河河口錶層沉積物等溫吸附特性。瀰苴河河口沉積物存在釋燐風險，沉積物間隙水正燐濃度遠高于臨界燐平衡濃度。
이이해주요입호하류미저하적하구표층침적물위실험대상，연구기린흡부특성。연구결과표명，Elovich방정대침적물흡린동역학의합교호，고필침적물원유흡부태린적수정Langmuir방정능교호묘술미저하하구표층침적물등온흡부특성。미저하하구침적물존재석린풍험，침적물간극수정린농도원고우림계린평형농도。
The study of characteristics of phosphorus adsorption in the surface sediments in Miju River estuary of ErhaiLake showed that the modified Langmuir model considering adsorbed phosphate may well describe the property of isothermal adsorption.The Elovich equation fits adsorption kinetics process.A high risk of phosphate release from surface sediments would exist because phosphate content in porewater of sediments is much higher than the e-quilibrium critical concentration of phosphorus adsorption.
