Ammonia selective bulk acoustic wave sensor based on neutral ionophores

✍ Scribed by Yuanjin Xu; Shihui Si; Changyin Lu; Lihua Nie; Shouzhuo Yao

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 417 KB
• Volume: 312
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(95)00194-5

✦ Synopsis

A large variety of new coated bulk acoustic wave (BAW) sensors for the detection of ammonia was realized by incorporating a cation-selective neutral ionophore, a H+-selective neutral ionophore and a lipophilic anionic site in the same coating. Such coating generally combines the advantages of a highly selective and reversible recognition of the given ionic substrates. The proposed sensor has a response time of 30 s with linear response over the ammonia concentration range OS-20 pg 1-l (ppm>.