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

以氟-独居石混合稀土为研究对象,采分步选择性氯化-化气相传输反应(SC-CVT),实现钍与其它稀土元素分离。

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

采超滤-离子交换色谱分步洗脱法,对牛初乳中乳过氧化物酶进行了分离和纯化。

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

摘要本文应原理对氢硫酸强度及逐级电离平衡进行了讨论，有助于无机化教和生习。