测定维生素C的方法较多,常规用2,6-DCP滴定法,操作费时,烦琐。为此,我们进行了改进,研制成V_C速测片。每片V_C速测片相当于1毫克维生素C,水溶性能好,2分钟即可完全溶解,溶液澄清。使用时,取一片药剂溶解于50毫升蒸馏水瓶中,定容至刻度。再取待测样品(W)5—20克,用％草酸作浸提剂研磨 Determination of vitamin C are more conventional 2,6-DCP titration method, time-consuming and cumbersome. To this end, we made improvements, developed into V_C speed test film. V_C per tablet is equivalent to 1 mg vitamin C, good water solubility, 2 minutes to completely dissolve, the solution is clear. When used, take a piece of medicine dissolved in 50 ml of distilled water bottle, set the volume to the mark. 5-20 grams of the sample to be tested (W) is again taken and ground with% oxalic acid as a extractant