It is found that the ions above react with certain complexant and surface active agent to produce the ternary complex , which can be collected by the membrane 實(shí)驗(yàn)表明,上述離子與適當(dāng)?shù)娘@色劑以及表面活性劑所形成的多元絡(luò)合物可以被一定孔徑的微孔濾膜所富集。
Through the analyzing the macro - structure to micro - structure , the author considers that retarding mechanism of citric acid is that citric acid and ca in the gypsum form the complexant ion , and hinder the crystallization center of dihydrate crystal bigger ; that of sodium tripolyphosphate is that it combined with ca , hinders the dissolve of hemihydrate . formation and growth of crystallization center ; that of bone glue is the glue - protection and chemical absorption action of active group , which also retards the formation and growth of crystallization center 通過(guò)宏觀到微觀的分析,筆者認(rèn)為,檸檬酸的緩凝作用的原因主要在于檸檬酸與鈣形成絡(luò)合離子,影響了二水石膏晶體的晶核長(zhǎng)大過(guò)程;多聚磷酸鈉與鈣形成某種復(fù)鹽,對(duì)于石膏晶體的溶解、成核和長(zhǎng)大過(guò)程均有強(qiáng)烈的阻礙影響;骨膠則在于膠體對(duì)半水石膏的包裹和活性基團(tuán)的化學(xué)吸附,使二水石膏晶體的成核和長(zhǎng)大困難。