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去阳离子水的制取▲湖南益阳市十四中（４１３０５１）姚君山▲中学生物实验中经常要用到蒸馏水，但有些学校因条件限制无法买到或制取蒸馏水。根据我们的经验，用去阳离子水代替蒸馏水作“根对矿质元素离子的交换吸附”实验，同样可得到满意的效果。去阳离子水的制取方法...
Preparation of Cation Water ▲ Hunan No. 14 Middle School of Yiyang City (413051) Yao Junshan ▲ Distilled water is often used in biological experiments in secondary schools. However, some schools cannot purchase or obtain distilled water due to conditions. According to our experience, the use of deionized water instead of distilled water as a “root exchange of adsorption of mineral element ions” experiment, can also get satisfactory results. Go to the preparation of cationic water...