摘要
以ＥＤＴＡ为掩蔽剂可消除Ｐｂ２＋、Ｃｕ２＋、Ｆｅ３＋等离子的干扰，用空白减差法可消除合成及天然色素等物质的影响。成功地将本法应用于测定蔬菜、水果、饮料及营养药剂中抗坏血酸的含量，回收率为９０．Ｏ％～１０５％，变异系数小于３．０％。本法操作简便、快速、准确，每小时可连续测定２０～３０份试样。
The interference of Pb2+, Cu2+ and Fe3+ ions could eliminated the using EDTA as the masking agent.The influence of natural or synthetic pigments could eliminated by corrected method.The contents of ascorbic acid in vegetables,fruits,soft drinks and nutritive medicinal preparations were successfully determined by this method.The recovery was 90.0%～105% with the coefficient of variability below 3.0%. Tangshan institute technology
出处
《卫生研究》
CAS
CSCD
北大核心
1994年第2期101-103,共3页
Journal of Hygiene Research
关键词
抗坏血酸
食品
营养药剂
测定
Ascorbic acid, fast blue salt B, foods, nutritive medicinal preparations, spectrophotometry
