摘要
采用dionex 4000i离子色谱仪,分析了果汁中的草酸和柠檬酸酸含量。使用dionex HPLC-AG4阴离子色谱柱,洗脱液为3．0mmol/LNa_2CO_2和3．0mmol/LNaOH,以电导检测,进样体积50μl。草酸和柠檬酸的最小检测量分别为0．02μg/ml和0．04μg/ml(信噪比为2．50),标准偏差分别为1．01%和3．01%,线性范围在1000μg/ml之内,回收率在95．06%~104．
Oxalic acid and citric acid in fruits were determinated by ion chromatography. The conditions of the determination were discussed. Ther were good reproducible and rectilinear relationship. Good recoveries were obtained with use of the method for oxalic acid and citric acid determination in several fruits.
出处
《食品科学》
EI
CAS
CSCD
北大核心
1993年第7期62-63,51,共3页
Food Science
关键词
离子色谱
草酸
柠檬酸
水果
Ion Chromatography Oxalic Acid Citric Acid Fruit
