The acidic concentration of the catalyst was titrated by butylamine with the method of adsorption of colouredindicator.
用吸附指示剂正丁胺滴定法测定了催化剂的酸量。
2
The liquid may comprise a translucent liquid such as water and the dye may comprise an indicator such as a water-based ink containing coloured dyes, dispersed pigments or other colouring media.