正吸附是指表面活性剂在溶液表面层聚集的现象。
同时，该平衡点也是两组分竞争吸附的转折点，从正吸附变为负吸附或从负吸附变为正吸附；
At the same time, the equilibrium point is also the turning point of competitive adsorption, from positive adsorption to negative adsorption or from negative absorption to positive adsorption;
用吸附指示剂正丁胺滴定法测定了催化剂的酸量。
The acidic concentration of the catalyst was titrated by butylamine with the method of adsorption of coloured indicator.
对石油化学实验中所使用正庚烷溶剂的回收方法进行了对比，实验表明，采用氧化铝作为吸附剂效果良好，方法简便易行。
By contrasting with many retrieving methods of normal heptane in petroleum chemistry experiment this paper showed that alumina is a good sorbent, both simple and convenience.
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