【摘要】 采用碘酸钾萃取分光光度法，对市售番茄、花菜、苋菜、萝卜、黄瓜、橙子和果珍饮品中的Ｖｃ进行了测定，其回收率达９５．２％，变异系数４．９％，Ｖｃ浓度为２０一４８０μｇ／ｍＬ时吸光率有较好的线性。更多还原

【Abstract】 The contents of ascorbic acid in tomato,cauliflower,amaranth,radish,cucumber,orange and fruit beverage on sale were determined by extraction spectrophotometry with potassium iodate. The recovery rate was 95.2% with a coefficient of variation 4.9%. Beer′s law is obeyed over the range 20一480 μg/mL ascorbic acid.更多还原