<正>以β-蒎烯和多聚甲醛为原料，固体超强酸SO42-/ZrO2-TiO2为催化剂。在微波辐射条件下合成诺卜醇。考察了微波辐射温度、辐射时间、SO42-/ZrO2-TiO2的制备条件（Ti与Zr的元素配比、催化剂培烧温度）、催化剂用量等对诺』、醇得率的影响。结果表明。徽波辐射温度、时间及催化剂的制备条『牛和用量对若』、醇得率有较大影响。优化的工艺每件为：徽波辐射温度110℃，辐射时间2.5h，微波功率600W。催化剂的元素摩尔比MTi：MZr=6：1.培浇温度450℃。催化剂的质量分数为4%。该条件下诺r醇得率60.4%。此外，还研究了催化剂放置时问对产物得率的影响及催化利再生使，rfl情况。

The enzyme activities of PAL from six year old Ginkog biloba leaves in the potted orchard were induced by four groups of metal ions respectively The PAL activities and flavonoids content were measured using the UV--Vis spectrophotometer. Changes of the whole year were also studied. The results showed that four groups of metal ion treatments had significant effects on the PAL activities and flavonoids contents in Ginkgo leaves. The treatments with 0.1% and 0.3% FeSO4, 0.1%, 0.20//00 and 0.3%ZNSO4, 0.1%, 0.30/4o and 0.5% MnSO4, 0.1% and 0.4% CuSO4 not only enhanced flavonoids contents, but also extended the periods of best-collecting-leaf. The optimum combination was 0.1% FeSO4, 0.2% Zn-SO4, 0.3% MnSO4, 0.4% CuSO4. It could improve flavonoids content up to 1.6194%.