硫活性下降的原因.参考文献:[1] 车阿小.掺杂对酸法铁黄制备过程的影响[J].华东理工大学学报,1997,23(4):403~407.[2] 车阿小.EDTA对γ-FeOOH制备过程的影响[J].华东理工大学学报,1998,24(4):441~445.[3] SudakarC,SubbannaGN,KuttyTRN.Synthesisofacicularhydrogoethite(α-FeOOH.xH2O;011<x,0122)icpropertiesofmaghemitederivedfromhydrogothite[J].J.Mater.Chem.,2002,12:107~116.[4] TatsuoIshikawa,TaikiMotoki,KazuhikoKandori,etal.InfluenceofhydrolyzedandnonhydrolyzedTi,Cr,andAlionsontheformationofβ-FeOOHparticles[J].JournalofColloidandInterface,2003,265:320~326.[5] SudakarC,SubbannaGN,KuttyTRN.EffectofanionsonthepHasestabilityofγ-icpropertiesofgamma2ferricoxidederivedfromlepidocrocite[J].JournalofPhysicsofSolids,2003,64:2337~2349.收取稿件审理费的通知承蒙广大作者的厚爱,近几年,《煤炭学报》的收稿量急剧增加.由于本刊采取比较严格的审稿制度,外审工作量很大,审稿费的开支逐年增加,因此,本刊从2006-01-01起,对投稿的作者酌收稿件审理费100元/篇,以补充办刊经费的不足,敬请广大作者谅解与支持.本刊编辑部793__