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《腐殖酸对土壤铅赋存形态的影响（effect of humic acid on soil lead speciation）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、腐殖酸对土壤铅赋存形态的影响（Effectofhumicacidonsoilleadspeciation）EffectofhumicacidonsoilleadspeciationThehighjump1,HanXiaokai1,LiYanhui2,guanlianzhu1,YanLi1*1.、Schooloflandandenvironment,ShenyangAgriculturalUinversity,Liaoning110161,Shenyang2.ShenyangShenyangagriculturalinspectioncenter,Liaoning110034,Chin
2、aAbstract:theeffectsofdifferentamountsofhumicacidontheformsofleadinleadcontaminatedsoilwereinvestigatedbylaboratoryincubationexperiments.TheresultsshowedthathumicacidtreatmentscouldsignificantlyreducetheexchangeablePbinsoil(EX-)(Cob-),carbonateboundandFeMnoxides(FeMn-)andthecontentoforganicboun
3、dPb(Ob-)andresidualfraction(Res-)significantlyincreasedthecontentoflead.Humicacideffectivelyreducedtheactivityoflead,andtheinfluencedegreeincreasedwiththeincreaseofhumicacidcontent.Effectofhumicacidonleadionsinsoilsofvariousformsofcontentchangewithtimefor0~40incultureduringtheperiodofD,withthep
4、rolongationoftheculturetimeexchangewithoutsignificantchangesinPbcontent,leadcontentofresiduedecreasedsignificantly,theotherthreewereincreased;after40dculture,withculturetimeextendthevariousformsofcontentdidnotchangesignificantly.Consideringcomprehensively,thehumicacidwith10%qualityratiocansigni
5、ficantlyreducetheactivityoflead,soastoachieveabetterrepaireffect.Keywords:humicacid;soil;lead;speciationCLCnumber:X131.3,documentidentificationcode:A,articlenumber:1672-2175(2008)03-1053-05Table1PhysicalandchemicalpropertiesoftestedsoilTable1,Basic,physical,and,chemical,properties,in,soil,testS
6、oiltype,texture,w(organicmatter)/(g,kg-1),pH(H2O),(g,kg-1),B(CEC)/(CMoL,kg-1),w(freeironoxide)/(g,kg-1),w(amorphousironoxide)/(Mg,kg-1),brownearth,loamy15.6,6.5,,14.5,16.3,14.96,,84.62Leadisakindofheavymetalwithneurotoxicity.Afterleadcontaminatedbysoil,leadcancausecropgrowthtobeblocked,yieldwil
7、lbegreatlyreducedandqualitywilldecrease.Throughthefoodchainonthehumannervoussystem,blood,immunesystemandbloodvessels,liver,kidneyandotherorgansandorgans,particularlyprominentnerves,[1].However,withtherapiddevelopmentofindustry,the
