Ammonia sensing with fluoroionophores - A promising way to minimize interferences caused by volatile amines

作者：Mueller Bernhard J; Steinmann Nicole; Borisov Sergey M; Klimant Ingo^*

来源：Sensors and Actuators B: Chemical , 2018, 255: 1897-1901.

DOI：10.1016/j.snb.2017.08.209

• Photoinduced electron transfer
• Ammonia
• Fluorescence
• Optical sensor
• Fluoroionophore

A novel sensing concept for the selective detection of ammonia over amines is introduced. For the first time, the reversible fluorescence-based NH3 sensor makes use of an ammonium-sensitive fluoroionophore instead of commonly utilized pH indicators. NH3 diffuses into the sensor where a buffered internal electrolyte generates the corresponding ammonium ion, which is then detected by an ion selective NIR fluoroionophore.

• 出版日期2018-2