Reflectance based optical fibre sensor for ammonium ion using solid-state Riegler's reagent

• Main Authors: Tan Ling, Ling,, Musa, Ahmad,, Lee Yook, Heng,
• Format: Article
• Language: English
• Published: Elsevier Science Sa 2015
• Subjects: Optical Sensor; Ammonium Ion; XAD-7 Beads; P-Nitrobenzene-Diazonium Chloride; Reflectance Spectrophotometry; Optical Fibre
• Online Access: http://ddms.usim.edu.my/handle/123456789/8389

A new optical sensor for fast screening of ammonium (NH4+) ion was developed based on immobilisation of p-nitrobenzene-diazonium chloride (Riegler's reagent) onto XAD-7 microbeads. In aqueous solution, the diazonium salt is unstable and will spontaneously decompose at room temperature but we ha...