摘要
利用自制的流动比色装置固定在检测器的样品池和参比池中,基于在碱性介质果糖与铁氰化钾的反应快于葡萄糖特点,实现流动注射微分光度检测蜂蜜中果糖含量,进样频率为120次/h,浓度在2mg/L～25mg/L,呈良好线性关系(r=0.9997,n=5),精密度好(RSD%=1.2)。
We proposed a new FIA defferential spectrophotometry to determine the contents of fruit sugar in honey.The defferential determination （ △ A ） is achieved by the use of two home-made flow trough cells that are installed in the sample light beam and the comparing light beam of a photometer, according to the color reaction of fruit sugar with K3[Fe （CN）6] The frequency of sample introduction is 120 times per hour.We obtain good linear relation （r=0.999 7,n=5 ） in the range of 2 mg/L-25 mg/L. The precision（RSD） is 1.2.
出处
《食品研究与开发》
CAS
北大核心
2009年第11期125-127,共3页
Food Research and Development
关键词
微分光度法
流动注射分析
自制流动比色器
果糖
flow-Injection differential spectrophotometry
FIA （Flow Injection Analysis）
fow cuvette homemade
fruit sugar in honey
