论文部分内容阅读
A piezoelectric sensor responsive to vitamin B 1 was fabricated based on the vitamin B 1 tetraphenylborate ion pair. The general performance characteristics of the sensor are presented here. The proposed sensor showed a wide working pH range, a good sensitivity and selectivity. The response range is between 1 0×10 -7 -4 9×10 -5 mol/L with a detection limit of 8×10 -8 mol/L at pH 4 0. The selectivity should be attributed to the preferential adsorption of the component ion on the membrane/solution interface. The adsorption behavior of vitamin B 1 on the crystal surface was investigated with a quartz crystal impedance(QCI) system.
The general performance characteristics of the sensor are presented. The proposed sensor showed a wide working pH range, a good sensitivity and selectivity. The response range is between 1 × 10 -7 -4 9 × 10 -5 mol / L with a detection limit of 8 × 10 -8 mol / L at pH 4 0. The selectivity should be attributed to the preferential adsorption of the component ion on the membrane / solution interface. The adsorption behavior of vitamin B 1 on the crystal surface was investigated with a quartz crystal impedance (QCI) system.