title: Determination of ammonia by designing an optode based on immobilization of a Co(III)-Schiff base complex on a triacetylcelluose membrane.
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 x 10(-4) and -1.25 x 10(-2) M in borate buffer (pH 10). The LOD was found to be 9.5 x 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.
authors.forename: Hossein
authors.initials: H
authors.lastname: Tavallali
authors.forename: Susan
authors.initials: S
authors.lastname: Torabi
authors.forename: Mozaffar
authors.initials: M
authors.lastname: Asadi
authors.forename: Hajar
authors.initials: H
authors.lastname: Mohammadi
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D003035:Cobalt / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008567:Membranes, Artificial; D055096:Optical Devices; D012545:Schiff Bases / Q000737:chemistry*
chemical_list: D008567:Membranes, Artificial; D012545:Schiff Bases; D003035:Cobalt; D000641:Ammonia; D002482:Cellulose; C024671:cellulose triacetate