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《海河沉积物中磷释放的模拟研究(孙淑娟黄岁木梁) 》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、高中生庆祝建国60周年演讲稿：英雄中尊敬的评委老师,亲爱的同学们:大家好!今天，我演讲的题目是：《英雄中国》。我们生活在英雄的国度，我们成长于英雄的民族、英雄的时代，我们的先人创造了英雄的业绩，我们年轻一代肩负着继往开来的英雄的的使命。让我们走入历史的烟云，去感受那一幕幕英雄的传奇:女娲补天，精卫填海，大禹治水，仓颉造字，在远古洪荒的时代，我们的先人就创造着这样的神话，更创造着神话般物磷的释放量略高于中性条件下沉积物磷的释放量；当上覆水磷含量较高时，沉积物中的磷呈“负释放”状态.研究还显示，沉积物中不同形态的磷含量与沉积
2、物磷释放量有不同程度的相关性，其中可交换态磷(NH4CI-P)和可还原态磷(BD-P)含量与沉积物磷的释放量高度相关(R2分别为0.99和0.84).关键词:海河;沉积物;磷释放;环境因素中图分类号：X522文献标志码：A文章编号：1001—6929(XX)04—0126—06sefromHaiheRiverSedimentSUNShu-juan,HUANGSui-丨iangCollegeofEnvironmentaIScienceandEngineering,NanKaiUniversity,Tianjin300071
3、,ChinaAbstract:PhosphorusreIeasefromthesedimentofHaiheRiveranditsreIationshipwithsedimentphosphorusformsweresimuIatedinIaboratory,whiIetheeffectsofanaerobicPaerobiccondition,pH,temperature,initiaITPconcentrationsofoverlyingwaterandmicroorganismactionwereaIsoinves
4、tigated.TheresuItsshowedthattheactionofmicroorganismwasthemaincauseforphosphorusreIeasedfromtheHaihesediment.TheanaerobicconditionwasmuchmorepropitioustothephosphorusreIeasedthantheaerobiccondition.AIsohighertemperaturewasheIpfuItothephosphorusreIease,andatthepre
5、senceofmicroorganism.ThesedimentreIeasedmorephosphorusunderaIkaIineoracidicconditionscomparedtotheneutraIcondition.ForhigherinitiaIphosphorusconcentrationoftheoverIyingwater,thesedimentabsorbedthehosphorusoftheoverIyingwateruntilabaIancsefromHaiheRiverSedimentSUN
6、Shu-juan,HUANGSui-丨iangCollegeofEnvironmentaIScienceandEngineering,NanKaiUniversity,Tianjin300071,ChinaAbstract:PhosphorusreIeasefromthesedimentofHaiheRiveranditsreIationshipwithsedimentphosphorusformsweresimuIatedinIaboratory,whiIetheeffectsofanaerobicPaerobicco
7、ndition,pH,temperature,initiaITPconcentrationsofoverlyingwaterandmicroorganismactionwereaIsoinvestigated.TheresuItsshowedthattheactionofmicroorganismwasthemaincauseforphosphorusreIeasedfromtheHaihesediment.Theanaerobicconditionwasmuchmorepropitioustothephosphorus
8、reIeasedthantheaerobiccondition.AIsohighertemperaturewasheIpfuItothephosphorusreIease,andatthepresenceofmicroorganism.ThesedimentreIeasedmorephosphorusunderaIk
