摘要
采用改进的Al Fe Ferron逐时络合比色法定量研究了HPAFC的形态分布 ,结合酸解聚实验和酸反滴定实验结果 ,描述了其形态分布特征 .在碱化度B为 1 0 - 2 0内 ,nAl/nFe=9∶1时 ,单体和二聚体 [Al+Fe]a 达 2 0 % - 60 % ;nAl/nFe=5∶5时达 30 % - 50 % .nAl/nFe=9∶1时 ,中间多核羟基络合物 [Al+Fe]b 达 2 0 % - 55% ;nAl/nFe=5∶5时达 5% - 2 0 % .nAl/nFe=9∶1时 ,溶胶 [Al+Fe]c 达 1 5% - 35% ;nAl/nFe=5∶5时达 30 % - 50 % .HPAFC的形态是间断分布 .
The species distribution of hydroxyl polymeric aluminum\|ferric chloride (HPAFC) was quantitatively studied with improved Al\|Fe\|Ferron time\|colorimetric procedure,acid depolymerization and continuous acid reverse titration experiments and the species distribution of HPAFC was described.When basicity was in the range of 1 0-2 0,the monomer and dimer \ a were 20%—60% for n Al / n Fe =9∶1 and 30%—50% for n Al / n Fe =5∶5;the intermediate multinuclear complex compounds \ b were 20-55% for n Al / n Fe =9∶1 and 5%—20% for n Al / n Fe =5∶5;and the sol \ c were 15%—35% for n Al / n Fe =9∶1 and 30%—50% for n Al / n Fe =5∶5.The species distribution characteristics of HPAFC were discontinuty.
出处
《环境科学学报》
CAS
CSCD
北大核心
2000年第5期608-611,共4页
Acta Scientiae Circumstantiae
基金
国家自然科学基金!项目 ( 2 96770 0 4 )资助
关键词
羟基聚合氯化铝铁
形态分布
逐时张合比色
Hydroxyl polymeric aluminum\|ferric chloride
species distribution
time complexcolorimetric procedure
