APPLICATION OF DUAL-PULSE STAIRCASE VOLTAMMETRY FOR SIMULTANEOUS DETERMINATION OF GLUCOSE AND FRUCTOSE

被引:9
作者
FUNG, YS
MO, SY
机构
[1] Department of Chemistry, University of Hong Kong
关键词
DUAL PULSE STAIRCASE VOLTAMMETRY; GLUCOSE ANALYSIS; FRUCTOSE ANALYSIS; FOOD ANALYSIS; SUGAR ANALYSIS;
D O I
10.1002/elan.1140070212
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A new electroanalytical method, DPSV, employing dual pulses (0.7V and -0.8V) prior to anodic scan (using staircase voltammetry) is developed for simultaneous determination of glucose and fructose. The electrochemistry of both sugars was studied prior to optimizing the operational parameters. The linear ranges were found to be 0.01-2.0 mM for both sugars, precisions (mean = 0.10 mM and n = 8) 1.8% and 2.4% and detection limits (estimated by 3 times the standard deviation) 0.001 and 0.003 mM for glucose and fructose, respectively. To establish the reliability of the method, various food additives were tested and found to give no interference effect under normal concentrations. HPLC method was carried out in parallel with the method for analyzing food, drink and honey samples. No statistically significant difference in the results was obtained for methods.
引用
收藏
页码:160 / 165
页数:6
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