该文采用高铁还原法测定沙棘果实中抗坏血酸含量,并与荧光法、靛酚滴定法相比较,结果表明高铁还原法操作简单、试剂易得、灵敏度高、准确性好,其最低检出限为0.01μG/ML,相对标准偏差为0.83％(N＝8),平均回收率为95.6％(N＝6),是值得推广的一种测定方法,同时研究了环境因素(温度、存放时间及条件、酸碱度)对沙棘果实中抗坏血酸稳定性的影响,发现沙棘果实中抗坏血酸在受热(80℃,1小时)、PH中性及冰箱冷藏时比同条件下的纯抗坏血酸液要稳定得多.“,”The high?valence iron reduction method was used to determine the ascorbic acid of fructus hippophae fruit.The reduction method had simple,high sensitivity and accuracy in comparison with fluorospectrophotometry or indophenol titration method.Its limit of detection was 0.01μg/mL,the relative standard deviation and the average recovery was 0.83%(?n=8?) and 95.6%(?n=6?)respectively.We also researched the influence of the environment factors (temperature,storage period and condition,pH value) on the stability o...