Vol.27 No.4 张琼等：乙酸对聚硅酸絮凝剂形态分布及转化规律的影响 ·417· [刀王东升，吴奇藩，韦朝海，新型无机高分子絮凝剂含铁聚 [10]ller R K.Isolation and charaterization of particle nuclei during 硅酸的研究及其性能.环境科学，1997,18(3)：17 the polymerization of silicic Acid to colloidal silica.Colloid Int [8)栾兆坤，宋永会，聚硅酸金属盐絮凝剂的制备和絮凝性能. Sci1980,751):138 环境化学，I997,16(6):534 [11】王东升，汤鸿霄.三类氧化硅的形态分布及其转化特性 [9]尹承龙，许韵华，赵海英，酸化剂对硅酸聚合胶凝影响的研 环境化学，1997,16(6)：515 究.北方交通大学学报，2004,28(1)：65 Acetic acid effect on the polymerization and species distribution of polysilicic acid in silicic acid ZHANG Oiong,XU Zhaoyi,XIA Shuang,YIN Chenglong School of Civil Engineering and Architecture,Beijing Jiaotong University,Beijing 100044.China ABSTRACT The species distribution and transformation characteristics of polysilicic acid in the presence of ac- etic acid were investigated by chemical Si-Mo assay analysis.The experimental results showed that in the acid con- dition the polymerization rate decreased in acetic acid media,and the contents of species Si.and Si were increased. This further indicated that when the acetic acid compound existed it could slow the growth rate of the particles of polysilicic acid,but total species distribution and its transformation model of polysilicic acid did not change. KEY WORDS islicic acid;acetic acid:polymerization:species distribution;species transformation,向 1 . 2 7 N 0 . 4 张琼等 : 乙 酸对 聚硅 酸絮 凝剂 形态 分布 及转 化规律 的 影响 . 4 17 . 7[] 王东升 , 吴 奇藩 , 韦朝 海 . 新型 无机 高分子 絮凝 剂含铁 聚 硅酸 的研究 及其 性能 . 环境 科 学 , 19 97 , 1 8( 3) : 17 邝] 奕兆坤 , 宋 永会 , 聚 硅酸金属 盐絮凝 剂的 制备和 絮凝性 能 . 环 境化 学 , 19 9 7 , 16 ( 6 ) : 5 3 4 9[ l 尹 承 龙 , 许韵 华 , 赵 海英 . 酸化剂 对硅酸 聚合 胶凝 影响 的研 究 . 北方 交通大 学学报 , 2 0 0 4 , 2 5( l ) : 6 5 [ 10 ] I l e r R K . I s o lat i o n an d e h a r a t e ir atZ i o n o f P’art i e 1 e nu e l e i d u r in g t h e P o ly m e r i乙 欲i o n o f s ili e i e A e id ot e o ll o i dal s i li e a . C o l o id I n t S e i, 19 8 0 , 75 ( l ) : 13 8 【1 1] 王 东升 , 汤鸿 霄 . 三类氧 化硅 的形态 分布 及其转 化特性 . 环 境 化学 , 19 9 7 , 16 (6 ) : 5 15 A c e t i e a c i d e fe c t o n ht e P o l y m e r i z at i o n an d s P e e i e s d i s tr i but i o n o f P o ly s i li c i e a e i d i n s ili Ci c a c i d 2 1丈4 N G Qio gn, X U hZ a oy ,i 方义4 hS au gn, {塑壑奎丝鱼竖 { S e h o o l o f Ci v i l Egn in e e r i n g an d A r c h it e C奴 ir e , B e ij 1 n g Ji ao t on g U n i v e rs i ty, B e ij in g l 0 0 0 4 4 , C h ina A B S T R A C T hT e s P e e i e s d i s itr b ut i o n an d tr an s fo rm at i o n e h ar a e t e ir s t i e s o f p o l y s i li e i e ac i d i n ht e rP e s e n e e o f a e - 。 it e ac id wer i n v e s it g ate d by e h o i e a l 5 1 一 M o a s s ay an a l y s i s . hT e e x P e ir m e n ta l re s u l ts s h o w e d ht at i n ht e a e i d e on - 。 di it o n ht e P o ly m e ir az t ion rat e d e e re a s e d i n a e e ti e a e id m e d i a , an d het e o in e in s o f s P e e i e s 5 1 。 an d 5 1 、 w e r e in e er as e d . ’ hT i s ifJ rtL h e r i n d i e at e d ht at hw e n ht e ac e it e a e i d e o m P o un d e x i s t e d it e o u ld s l o w ht e gr o wt h art e o f ht e Part i e l e s o f P o ly s i li e i e ac i d , b ut t o t a l s P e e i e s di s t ir b ut i o n an d i t s tr a n s fo mr at i o n m o d e l o f P o ly s ili e i c a e i d d i d n o t e h an g e . K E Y WO R D S i s l i e i e a e i d : a e e t i e a e i d ; P o ly m e ir z at i o n ; s P e e i e s d i s itr b ut i o n : s P e e i e s tr an s fo n n at ion