Determination of Ammonia by Designing an Optode Based on Immobilization of a Co(III)-Schiff Base Complex on a Triacetylcelluose Membrane. (27th November 2019)

• Record Type: Journal Article
• Authors: Tavallali, Hossein; Torabi, Susan; Asadi, Mozaffar; Mohammadi, Hajar
• Is Part Of: Journal of AOAC International. Volume 97:Number 1(2014)
• Page Start: 259
• Page End: 262
• Publication Date: 2019-11-27
• Subjects: Agricultural chemistry -- Periodicals; Food -- Analysis -- Periodicals; 543
• DOI: 10.5740/jaoacint.11-430
• Languages: English
• ISSNs: 1060-3271

Abstract

Abstract: A novel ammonia optode was designed using [4-methyl-N, N′-bis(salicylidene)-1, 2-phenylenediamine] tributylphosphincobalt(III) perchlorate monohydrate [Co(4-MeSaloph)(PBu)3 ] + complex coated on a triacetylcellulose membrane. The sensor could be used at a wavelength of 378 nm to detect ammonia in the range of 8.3 × 10 –4 and –1.25 × 10 –2 M in borate buffer(pH 10). The LOD was found to be 9.5 × 10 –5 M. The response time of the optode was 2–3 min and depended on the concentration of ammonia. This optode was successfully applied for the determination of ammonia in drinking water.