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 sho...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.展开更多
This article is focused on the relationship between the algae red tide, vitamin B 1 and B 12 in Dapeng Bay. Before red tide arising, the interrelationship between vitamin B 1 and Nocliluca scientillans is obvious. But...This article is focused on the relationship between the algae red tide, vitamin B 1 and B 12 in Dapeng Bay. Before red tide arising, the interrelationship between vitamin B 1 and Nocliluca scientillans is obvious. But it has no effect during the period of red tide. And after red tide, it is more obious than that between vitamin B 1 and Chattonella. The interrilationship between vitamin B 12 and Bonyaulax polygramma is much clearer than that between vitamin B 1 and Gonyaulax polygramma, during red tide.展开更多
基金Supported by the National Natural Science Foundation of China( No.2 0 0 75 0 0 7)
文摘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.
文摘This article is focused on the relationship between the algae red tide, vitamin B 1 and B 12 in Dapeng Bay. Before red tide arising, the interrelationship between vitamin B 1 and Nocliluca scientillans is obvious. But it has no effect during the period of red tide. And after red tide, it is more obious than that between vitamin B 1 and Chattonella. The interrilationship between vitamin B 12 and Bonyaulax polygramma is much clearer than that between vitamin B 1 and Gonyaulax polygramma, during red tide.
