中文摘要：

为在洞的溶解有机物的决心的一个改进同步 fluorimetric 方法滴水由增加维生素酸，被描述。方法在溶解有机物基于在维生素酸和撤退电子的成分之间的氧化还原作用反应。结果证明增加的维生素酸能熄灭次要的山峰，在 200300 nm，但是不在 300500 nm 影响主要山峰的紧张。另外，补充说维生素酸能在一个宽 pH 范围(9-4 ) 上维持相对高、经常的荧光紧张。

英文摘要：

An improved synchronous fluorimetric method for the determination of dissolved organic matter in cave drip water, by adding ascorbic acid, is described. The method is based on the redox reaction between ascorbic acid and the electron-withdrawing constituents in dissolved organic matter. The results show that adding ascorbic acid can quench the minor peaks, at 200-300 nm, but does not affect the intensity of the main peaks at 300-500nm. In addition, adding ascorbic acid can maintain relatively high and constant fuorescence intensity over a wide pH range （9-4）.