stepwise

1.A stepwise carbochlorination-chemical vapor transport(SC-CVT) technique is proposed for separation of thorium from mixed bastnaesite-monazite concentrate.

以氟碳铈矿-独居石混合稀土矿为研究对象,采用分步选择性碳热氯化-化学气相传输反应(SC-CVT),实现钍与其它稀土元素的分。

2.A stepwise procedure for isolation and purification of lactoperoxidase by ultrafiltration and ion exchange chromatography was investigated.

采用-子交换色谱分步洗脱法,对牛初乳中的乳过氧化物酶进行了分和纯化。

3.Acid intensity of hydrosulfuric acid and stepwise ionization balance were discussed by the use of thermodynamic principle, which are helpful to inorganic chemistry teaching.

摘要本文应用热学原理对氢硫酸的强度及逐级电平衡进行了讨论，有助于无机化学教学和学生学习。