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1、維普資訊http://www.cqvip.com中國環(huán)境科學(xué)2002,22(6):515~519ChinaEnvironmentalScience電氣石對水體pH值的影響冀志江,金宗哲,梁金生,王靜,顏學(xué)武(1沖國建筑材料科學(xué)研究院環(huán)境工程研究所,北京100024;2.t~Jl:建筑工程學(xué)院,河北張家El075024)摘要:用鹽酸和氫氧化鈉調(diào)節(jié)蒸餾水的pH值為3.2和12.12,加入電氣石粉并攪拌,pH值趨向中性10g電氣石和10g花崗巖粉加入200mL蒸餾水中,攪拌1h,pH值分別變?yōu)?57和8.89,用等離子譜(IcP)測得水中有Ca,Mg,AI、Fe,F(xiàn)e“,Mn“,Cr3
2、,B“,K和Na+等.電氣石處理的水中,除B之外其他離子濃度比花崗巖粉處理的低,說明電氣石顆粒表面的離子交換吸附H弱于花崗巖顆粒.在掃描電鏡F發(fā)現(xiàn)電氣石顆粒問彼此相依,存在吸引和排斥,而花崗巖顆粒問為團(tuán)聚吸附,只有吸引.電氣石顆粒的電極性影響水體的氧化還原電位,調(diào)節(jié)溶液DH值趨向中性:而表面吸附和離子交換吸附H.使酸性溶液pH值上升速率大于堿性溶液pH值_F降速率.關(guān)鍵詞:電氣石:水體;pH值:氧化還原電位;離子交換吸附中圖分類號:P574,X13文獻(xiàn)標(biāo)識碼:A文章編號:1000-6923(2002)06-051505InfluenceoftourmalineonpHvalueo
3、fwatenJIZhijiang,JINZong—zhe,LIANGJin—sheng,WANGJing,YANXue—WU(1.EnvironmentEngineeringInstitute,ChinaBuildingMaterialsAcademy,BeOing100024,China:2,HebeiInstituteofArchitecturalEngineering,Zhangjiakou075024,China).ChinaEnvironmentalScience.2002,22(6):515-519Abstract:ThepHvaluesofdistilledwate
4、rregulatedwithHC1andNaOHwere3.2and12.12,respectively.Thentourmalinepowderwasputintothemandstirred;theirpHvaluesdevelopedtothemiddle.10gtourmalineand10ggranitepowderwereputinto200mLdistilledwaterandstiredfor1h,andthepHvalueswere8.57and8.89,respectively.TherewereCa,Mg,A1,F(xiàn)e,F(xiàn)e,Mn,Cr3,B,KandNadi
5、ssolvedintowatersmeasuredbyinductivelycoupledargonplasmaspectrometer(ICP).TheirconcentrationswerelowerinthewatertreatedbytourmalinethanbygranitepowderexceptB“,whichindicatedtheabilityofionexchangeadsorptionofHoftourmalineparticlessurfacewasweakerthanthatofgranite.TheSEMimagesshowthatattractio
6、nandrepulsionexistamongtourmalineparticles,butnorepulsionexistsamongtheparticlesofgranite,whichconglomeratetogether.TheelectrodecharacteroftourmalineparticleinfluencestheredoxpotentialofwatersandregulatesthepHvalueofsolutiontothemiddle.SurfaceadsorptionandionexchangeadsorptionofHhelptheincrea
7、serateofpHvalueinacidicsolutionmorethanthedecreaserateinbasicsolution.Keywords:tourmaline:waters-pHvalue:redoxpotential:ionexchangeadsorption電氣石是一種由AI、Na、Ca、Mg、B和Fe存在永久性電極.由于電氣石類似于磁鐵磁極的等元素組成的含水、氟等的環(huán)狀硅酸鹽晶體礦物.自然電極的存在,不僅具有抗水污染作用,而且還其化學(xué)結(jié)構(gòu)通式?可表示為X