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山楂果汁颜色较深，如果测定山楂果实中的水溶性有机酸的含量，使用碱滴定法，电位滴定法不宜掌握滴定终点，用活性炭脱色后滴定法，滴定终点则容易掌握。本文用这３种方法进行了对比实验，其结果活性炭脱色后碱滴定法损失率较高，碱滴定法和电位滴定法测定的结果没有显著性差异，均可使用，只要掌握好滴定终点的颜色变化，能得到准确度较高的结果。同时通过实验又得到了１４个山楂品种的有机酸含量。
Hawthorn juice darker, if the determination of hawthorn fruit water-soluble organic acid content, the use of alkali titration, potentiometric titration end point is not appropriate to grasp, with activated carbon decolorization titration, titration of the end point is easy to grasp. In this paper, the three methods were compared with the experimental results of the loss of activated carbon after alkali titration higher loss of alkali titration and potentiometric titration did not show any significant difference between the results can be used, as long as the end of the master color of the titration Changes, can get higher accuracy of the results. At the same time, 14 hawthorn varieties of organic acids were obtained through experiments.