The total quantity of ascorbic acid in foods was determined by fluoro-metric method. Regarding to the analytical procedures as samples extraction, oxidization, coupled reaction and fluorescence determination ware detailed in this paper. In comparison with dye-titration and colorimetry, fluorometry was considered to be the best one on account of its higher sensitivity (O.lppm), precision and better recovery (over 90%) .

The competence of scientific research ethnical review in domestic hospital was inadequate,which was associated with the development of medical ethnics,values of Chinese traditional society,unsound domestic laws and regulations,weak administrative management,unqualified committee of medical ethnics,the drive of scientific deriving interests and restriction of project funds.Aiming at the above problems,countermeasures were carried out to strengthen the construction of laws and regulations,strengthen the constraint of administrative management,standardize the self-construction of ethnic committee,implement the standard operative procedure,thus to provide a reference for the standardized construction of scientific research ethnical review.