液相柱色谱法按分离原理可分为几类?在实际操作过程中如何选择固定相和流动相?
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Suggest a procedure for measuring the exchange capacity (ion exchange sites per unit mass or column of the resin) of a cation exchange resin using standard solutions of HCland NaOH and any other reagents you wish.
In what order would the following compounds be eluted from a alumina column using n-hexane as the el
溶出伏安法包括两个过程,即富集和溶出。______过程应选择适宜的电解电位并保持恒定,以提高______;记录______