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用单扫示波极谱法，在０１ｍｏｌ／ＬＬｉＣｌ中，土木香内酯有两个极谱还原波：Ｐ１（－１４１Ｖ）和Ｐ２（－１５１Ｖ）（ｖｓ．ＳＣＥ），峰Ｐ１的峰高与浓度在４３×１０－７～１２×１０－６ｍｏｌ／Ｌ和１３×１０－６～１５×１０－５ｍｏｌ／Ｌ范围内呈线性关系，可进行定量分析，用标准加入法能作定性分析，其检测限为２６×１０－７ｍｏｌ／Ｌ。测定了中药土木香中总内酯的含量，其结果令人满意。实验证明土木香内酯的电极过程为带有吸附性的不可逆的逐级电子反应过程，另外，还证明了Ｈ２Ｏ２可催化峰Ｐ１和羟基自由基可催化峰Ｐ２，讨论了土木香内酯清除由邻苯三酚自氧化产生的活性氧自由基（Ｏ－·２）的作用。
With single sweep oscillopolarography, there are two polarographic reduction waves of civil ligurine in P1.1-1mol / LLiCl: P1 (-141V) and P2 (-151V) (vs.SCE) The peak height of peak P1 showed a linear relationship with the concentration of 43 × 10-7 ~ 12 × 10-6mol / L and 13 × 10-6 ~ 15 × 10-5mol / L, Quantitative analysis, using standard addition method for qualitative analysis, the detection limit of 2 6 × 10-7mol / L. The content of total lactone in Chinese medicinal wood was determined, and the result was satisfactory. The experiment proves that the process of geranylactone electrode is an irreversible step-by-step electronic reaction process with adsorption. In addition, the catalytic peak P1 of H2O2 and the catalytic peak P2 of hydroxyl radical have also been proved. The role of pyrogallol autoxidation of reactive oxygen free radicals (O- · 2).