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Abstract:
To avoid the inaccuracy measurement caused by the different temperature between calibration solution and test solution in actual use of enzyme injection glucose biosensor, a detection method was established for enzyme injection glucose biosensors based on temperature. Firstly, the concentration detection model of the enzyme injection glucose biosensor is established according to enzymatic reaction kinetics. Then, the relationship between the temperature and the unknown parameters in the dynamic model of concentration detection is built using Arrhenius equation, and this relationship is substituted into the original detection dynamics model to establish the new model based on temperature. In this model, the current initial slope of the enzymatic reaction and the temperature are the inputs, and the concentration of glucose is output. Based on this new model, a detection method which is derived by the temperature of the mixture and the slope of the initial current is proposed. The new detection method can not only reduce the impact of temperature difference to improve detection accuracy, but also avoid the removal procedure of sampling probe causing by the calibration before each measurement, and it is more conducive to online use. A comparison was made by detecting the glucose solution with a concentration of 1. 5 mg/mL, 2. 5 mg/mL at the temperature of 25, 30, and 42 degrees C using both the original detection method and the new detection method based on temperature. The result shows that the recovery rate of the new method is more than 95. 0%, significantly better than that of the original detection method.
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CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
ISSN: 0253-3820
Year: 2017
Issue: 1
Volume: 45
Page: 97-103
1 . 2 0 0
JCR@2022
ESI Discipline: CHEMISTRY;
ESI HC Threshold:212
CAS Journal Grade:4
Cited Count:
WoS CC Cited Count: 2
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 8